SCIENCE 4 WORKBOOK – 1 Name: ___________________________________ Section: ________________ Roll No.: _________ School: __________________________________
Preface ClassKlap partners with schools, supporting them with learning materials and processes that are all crafted to work together as an interconnected system to drive learning. Our books strive to ensure inclusiveness in terms of gender and diversity in representation, catering to the heterogeneous Indian classroom. ClassKlap presents the Traveller series, designed specifically to meet the requirements of the new curriculum released in November 2016 by the Council for the Indian School Certificate Examinations (CISCE). Guiding principles: The 2016 CISCE curriculum states the following as its guiding principles for Science: Theme-based learning Relating science learning to the daily-life experiences of students Focus on skill/process development Providing opportunities for knowledge construction Infusion of environmental issues into the content Each of these principles resonates with the spirit in which the ClassKlap textbooks, workbooks and teacher companion books have been designed. The ClassKlap team of pedagogy experts has carried out an intensive mapping exercise to create a framework based on the CISCE curriculum document. Key features of ClassKlap Traveller series: Theme-based content that holistically addresses all the learning outcomes specified by CISCE curriculum Opportunities for experimentation, analysis and synthesis of ideas and concepts Exposure to locally relevant environmental problem solving Focus on science-specific vocabulary building Promotion of participatory and contextualised learning through the engagement of all relevant stakeholders in the learning process All in all, the Traveller Science books aim to enhance the learning of science, development of scientific temper and curiosity towards scientific activities along with the inculcation of healthy habits for environmental protection. – The Authors
Workbook Features • Use of simple, age-appropriate language • Situation-based questions to foster real life skills • Use of image-based questions to build analytical skills • Focus on improving creativity through activities I Remember I Understand • Q uestions that are aimed at • Q uestions that are aimed at helping students recollect helping students engage with critical information related to the ‘how’ and ‘why’ of the the ‘who’, ‘what’, ‘when’ and concept ‘where’ of the concept I Explore (H.O.T.S.) I Apply • E xtending the application of the • A pplying the understanding concept to more advanced of the concept to questions and challenging questions which based on application of the meet the criteria of higher order concept on real-life scenarios thinking skills
Contents 1 Components of Food��������������������������������������������������������������������������������������1 2 Teeth to Treasure���������������������������������������������������������������������������������������������5 3 The Digestive and Excretory Systems������������������������������������������������������������9 4 Adaptations in Animals���������������������������������������������������������������������������������14 5 Adaptations in Plants������������������������������������������������������������������������������������19 6 Food Production in Plants�����������������������������������������������������������������������������24
1Lesson Components of Food I Remember Multiple Choice Questions 1) Identify the food items rich in carbohydrates. [] (A) milk products (B) cereals (C) cooking oils (D) minerals 2) What causes the disorder called kwashiorkor? [ ] (A) lack of fats (B) lack of minerals (C) lack of proteins (D) lack of carbohydrates Fill in the blanks using the correct word from the brackets. 3) _____________________ help in body growth and repair. (Proteins/Carbohydrates) 4) T he food we eat contains ____________________ that keep us healthy and strong. (nutrients/fibres) Very Short Answer Questions 5) Name the disorder that is caused due to lack of iron. Ans. ______________________________________________________________________________ 6) Name the mineral that helps our teeth to stay strong. Ans. ______________________________________________________________________________ Short Answer Question 7) Define ‘balanced diet’. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 1
I Understand True or False 8) Storing food in a refrigerator or deep freezer helps to preserve food. ] [ 9) Our body needs minerals in very large amounts. [ ] 10) Cooking oils are a major source of fats. [] 11) Cereals are rich in carbohydrates. [] Short Answer Questions 12) How are the fibres from the food we eat useful? Give any two sources of fibres. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 13) What is the role of water in our body? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Long Answer Question 14) Complete the following table to explain the role of vitamins in our food. Vitamin Source Role of the vitamin A It improves our eyesight. oranges and lemons It helps our body to heal after a cut or bruise. It keeps our bones and teeth healthy. 2
x I Apply Multiple Choice Questions 15) Which of the following should we follow to avoid wastage of food? [ ] (A) throwing excess food in garbage bins (B) carrying enough food which we can finish (C) taking a lot of food items on our plate (D) not sharing extra food with anyone 16) Identify the sources of proteins from the following. [ ] (A) water and fibres (B) sugar and starch (C) fruits and vegetables (D) milk, milk products and eggs Short Answer Questions 17) Rima is a growing child. What all food components does she need to take? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 18) State ‘Right’ or ‘Wrong’. a) R itu’s grandmother makes jams and jellies from fruits in order to preserve them. [] b) The food required by Minu’s mother, who works a lot, and her grandmother, who cannot work much due to old age, would be the same. [] Long Answer Question 19) F ats are called the energy banks of our body. Give reasons. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Components of Food 3
I Explore (H.O.T.S.) Long Answer Question 20) D raw a ‘thali’/‘food plate’ showing all the food items that we should take in a balanced diet. Ans. 4
2Lesson Teeth to Treasure I Remember Multiple Choice Questions 1) How many teeth do adult human beings usually have? [ ] (A) 20 (B) 24 (C) 32 (D) 36 2) Which of the following teeth are twelve in number in human beings? [ ] (A) incisors (B) molars (C) canines (D) milk teeth Fill in the Blanks 3) The part of the teeth that we see is called the ____________________________. 4) The first set of teeth that a child gets is called _____________________________. Very Short Answer Questions 5) Name the soft innermost part of a tooth. Ans. ______________________________________________________________________________ 6) Name the set of teeth that comes in place of milk teeth when they fall off. Ans. ______________________________________________________________________________ Short Answer Question 7) Draw and label the types of teeth. Ans. 5
I Understand Match the Following a) help to tear food 8) incisors 9) molars b) the hardest material in the human body 10) enamel c) help to cut and bite food 11) canines d) help to chew and grind food Short Answer Questions 12) We need different kinds of teeth. Give reasons. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 13) How is the gum inside the mouth useful? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Long Answer Question 14) Describe the parts of a tooth with the help of a labelled diagram. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 6
I Apply Multiple Choice Questions 15) What should we do to have healthy teeth? [ ] ] (A) We should never rinse the mouth. (B) We should eat a lot of sugary items. (C) We should brush our teeth twice a day. (D) We should drink a lot of soft drinks. 16) R ohan has a teeth problem. The hard layers of his teeth have become weak. What may be the result of it? [ (A) He will be able to chew the food more easily. (B) He may not be able to chew the food properly. (C) New tooth may come out in place of the weak permanent tooth. (D) His gums will become healthier. Teeth to Treasure 7
Short Answer Questions 17) P riya always complains about her dental problems. What should she include in her diet to have strong gums and teeth? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 18) We should visit a dentist for regular check-ups. Give reasons. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ________________________________________________________________________ Long Answer Question 19) List any four good habits that you follow to take care of your teeth and gums. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ I Explore (H.O.T.S.) Long Answer Question 20) M ake a ‘Healthy Teeth’ poster for your classroom. Write a slogan to make other students aware of the importance of teeth care. 8
3Lesson The Digestive and Excretory Systems I Remember Multiple Choice Questions 1) What do we call the process of the removal of wastes from the body? [ ] (A) digestion (B) ingestion (C) excretion (D) disposal 2) I dentify the part of the digestive system which connects the mouth to the stomach. [ ] (A) liver (B) food pipe (C) rectum (D) small Intestine Fill in the blanks using the correct word from the brackets. 3) The process of breaking down of food inside our body is called ___________________________. (digestion/excretion) 4) T he ____________________ is a pipe-like structure which opens outside the body. (ureter/urethra) Very Short Answer Questions 5) Name that part of the digestive system where the digestion starts. Ans. ______________________________________________________________________________ 6) Name the largest and heaviest organ in the human body. Ans. ______________________________________________________________________________ 9
Short Answer Question 7) Draw and label a diagram of the human excretory system. Ans. I Understand True or False 8) Saliva is the juice produced by the liver. [] 9) In breathing, oxygen is thrown out of the body by the lungs. [ ] 10) The urinary bladder stores urine. [] 11) We chew food with our teeth. [] Short Answer Questions 12) How does the tongue help in digesting the food? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 13) Which is the largest excretory organ in our body? How does it help in excretion? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 10
Long Answer Question 14) Describe the process of digestion in the stomach. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ I Apply Multiple Choice Questions 15) R ucha’s grandfather is suffering from a disorder of excretory system. What may be the effect? [ ] (A) Urine formation will not be affected at all. (B) The person will feel hungry. (C) Excess salts and water will get piled up inside the body. (D) It will improve the functioning of other body parts. 16) Sana is suffering from indigestion. What may be the reason behind it? [ ] (A) The swelling on hands and legs (B) The food she eats does not get broken down easily. (C) Her kidneys are working properly. (D) She drinks enough water. Short Answer Questions 17) Write ‘Right’ or ‘Wrong’. a) Holding wastes inside our body for a long time is a good habit. ] [ b) We must do breathing exercises to keep the lungs healthy. [ ] The Digestive and Excretory Systems 11
18) A man is confused about the role of kidneys in the human body. Help him to understand the role of kidneys. Ans. _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ Long Answer Question 19) R ajan has to draw and label the parts of the digestive system as a part of his project. Help him to draw and label them. Ans. 12
I Explore (H.O.T.S.) Long Answer Question 20) Solve the following crossword based on human excretory system. 1. 3. 2. 4. Across 2) It is a pipe-like structure that carries the filtered out waste from the kidneys. 4) It stores liquid wastes. Down 1) It is an organ that removes wastes from the blood. 3) It is yellowish, watery liquid waste. The Digestive and Excretory Systems 13
4Lesson Adaptations in Animals I Remember Multiple Choice Questions 1) Identify the animal that lives on land as well as in water. [ ] (A) monkey (B) tiger (C) frog (D) bear 2) Which of the following animals is a carnivore? [ ] (A) cow (B) deer (C) rabbit (D) lion Fill in the blanks using the correct word from the brackets. 3) A place where an animal lives in the nature is called its _________________. (habitat/adaptation) 4) Elephants are _____________________________. (carnivores/herbivores) Very Short Answer Questions 5) What do we call the animals that eat only plant parts? Ans. ______________________________________________________________________________ 6) Give an example for an omnivore. Ans. ______________________________________________________________________________ Short Answer Question 7) State two adaptations of aquatic animals. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 14
I Understand Match the Following 8) a) has a trunk to pick up the food 9) b) has a long tail to help in jumping 10) c) has a shell on the body for protection 11) d) has sharp spines on the body for protection Short Answer Questions 12) State the benefits that animals get by living in groups. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 13) How are the camel’s feet protected from the hot sand in desert? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Adaptations in Animals 15
Long Answer Question 14) H ow do animals living in cold regions protect themselves from the weather? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ I Apply______________________________________________________________________________ Multiple Choice Questions 15) In winter, there are extreme cold conditions in a region. What will the birds do to avoid the cold weather? [] (A) They can protect themselves with the help of scales on their body. (B) They will bury themselves underground. (C) They can fight the weather with the warm layer of fur on their body. (D) They will move to a region with warmer weather. 16) R ajat has to identify the animal from the following options that likes to live alone instead of living in groups. Help him to identify the animal. [] (A) bison (B) leopard (C) elephant (D) deer Short Answer Questions 17) L ook at the given picture of a flying bird. What adaptations does it show that help the bird to fly in the air? 16
Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 18) The ears of a lion or a tiger are always facing forward. Give reasons. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Long Answer Question 19) R aju’s sister loves animals a lot. She told Raju not to buy any jackets or belts made of leather. Why do you think she said so? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Adaptations in Animals 17
I Explore (H.O.T.S.) Long Answer Question 20) C ollect the pictures of the animals showing different kinds of adaptations. Make a collage out of them. Ans. 18
5Lesson Adaptations in Plants I Remember Multiple Choice Questions 1) W hat do we call the body features that plants develop to suit their [ ] surroundings? (A) habitat (B) applications (C) adaptations (D) environment 2) Which of the following is an adaptation of the lotus plant? [ ] (A) flat and broad leaves (B) spines (C) hard and woody stems (D) divided leaves Fill in the blanks using the correct word from the brackets. 3) T he plants that grow on land are known as _______________________ plants. (terrestrial/aquatic) 4) Plants in swampy areas have __________________________ roots. (extensive/breathing) Very Short Answer Questions 5) Name a plant that is found in plains. Ans. ______________________________________________________________________________ 6) Name a floating aquatic plant. Ans. ______________________________________________________________________________ Short Answer Question 7) Why do floating aquatic plants have light and spongy stems? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 19
I Understand Match the Following a) adaptations in desert plants 8) b) adaptations in mountain plants c) adaptations of plants found in coastal areas 9) 10) 11) d) adaptations of plants found in swampy areas Short Answer Questions 12) Give examples of underwater plants. How do underwater plants get air? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 13) M ountain plants have narrow, needle-shaped leaves with a waxy coating. Give reasons. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Long Answer Question 14) List the adaptations seen in desert plants to face the water shortage in deserts. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 20
______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ I Apply______________________________________________________________________________ Multiple Choice Questions 15) Identify those plants from the following that usually have breathing roots.[ ] ] (A) underwater plants (B) floating aquatic plants (C) mangrove trees (D) fixed aquatic plants 16) O bserve the plant in the picture. It has conical shape. Where would we find such type of plant? [ (A) in desert (B) in swampy areas (C) in coastal areas (D) in mountains Short Answer Questions 17) S ahil saw a floating aquatic plant in a pond. Tick () the features from the following that it may have. a) It may have leaves reduced to spines. b) It may have leaves with waxy coating on their surface. c) It may have spongy stem. d) It may have needle-shaped leaves. 18) Rima planted a water plant in the garden soil. But it drooped and dried up within a few days. Explain to her why this happened. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Adaptations in Plants 21
Long Answer Question 19) D o you think a banana tree can naturally grow in deserts? Give reasons. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ I Explore (H.O.T.S.)______________________________________________________________________________ Long Answer Question 20) a) Draw pictures of adaptations seen in plants. Ans. 22
b) F ind the following words related to adaptations in plants in the word search given below. MOUNTAIN, DESERT, MANGROVE, PLAIN, AQUATIC S KHNUANP KX F VD Z KOD L HV S GM B CQ P A Z N Z J AQU A T I CD R F NMX U S N B J X HG S WC Z T U P AK R L ODHV I M VMO U N T A I N B CGV H S X L Z T A S D E S E R T HWV Adaptations in Plants 23
6Lesson Food Production in Plants I Remember Multiple Choice Questions 1) W hich of the following plants has a thorny stem? [ ] [ ] (A) rose (B) lotus (C) pumpkin (D) tulsi flower 2) Which part of the plant helps it to remain fixed in the soil? (A) leaves (B) stem (C) root (D) Fill in the Blanks 3) ___________________ trees have heart-shaped leaves. 4) _____________________ roots consist of many thin branched roots of almost the same size. Very Short Answer Questions 5) What are the pores found on the surface of leaves called? Ans. ______________________________________________________________________________ 6) Name any one factor that the leaves need to prepare food. Ans. ______________________________________________________________________________ Short Answer Question 7) Define ‘photosynthesis’. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 24
I Understand True or False 8) Some stems store food for plants. [] 9) All plants have the same type of roots. [] 10) A lotus plant has round-shaped leaves. [] 11) Chlorophyll gives the green colour to leaves. [] Short Answer Questions 12) List any two functions of leaves. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 13) C omplete the following statement. Leaves give out excess water from plants in the form of ________________________ through the ____________________________ present on them. This process is called ___________________________. It gives a ______________________ effect to the plant. Long Answer Question 14) Draw and describe the types of roots. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Food Production in Plants 25
I Apply Multiple Choice Questions 15) R eena found a creeping plant in her backyard. Which of the following plants might it be? [ ] ] (A) bamboo (B) pumpkin (C) rose (D) coconut 16) Which of the following may give a positive Iodine test result? [ (A) milk (B) water (C) meat (D) rice 26
Short Answer Questions 17) R aman kept a plant in a dark room for a few days. Then he did iodine test on one of its leaves. What will be the result? Why? Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 18) R ina is confused what glucose and starch are. Help her to understand difference between glucose and starch. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Long Answer Question 19) A s a part of his homework, Arpan has to answer how leaves prepare food. Help him answer the question. Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ I Explore (H.O.T.S.) Long Answer Question 20) In which of the following conditions will plants grow the best? Why? a) sunlight is present, but very less water, very less carbon dioxide b) very less sunlight, carbon dioxide present, very less oxygen c) water is present, but very less sunlight, very less carbon dioxide d) water, sunlight, oxygen, and carbon dioxide present in adequate amount Food Production in Plants 27
Ans. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 28
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