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by classklap SCIENCE WORKBOOK - TERM 3 Enhanced Edition 4 Name: ___________________________________ Section: ________________ Roll No.: _________ School: __________________________________ PNC_G4_SCI_T3_WB.indb 1 12-12-2019 19:58:59

Lesson Name Page No. 1) Green environment 1 2) Life of animals 8 3) Air we breathe 15 22 Inside the Lab 25 Term Project PNC_G4_SCI_T3_WB.indb 2 12-12-2019 19:59:01

Lesson 1: Green environment Concept Map Green environment Role of the 3 R’s in waste Steps in waste management management separation of waste Reduce (making or using less material) green bin (biodegradable waste) _______ (1) bin (recyclable waste) Reuse (using things repeatedly) red bin (non-recyclable waste) ____________ (2) (making new products from waste material) waste collection and transportation waste recycling and composting Waste separation waste disposal biodegradable (E.g., Recognize environment vegetable waste) (eco-friendly) material materials that can be recyclable (E.g., paper waste) __________________ (3) or broken down by microorganisms (E.g., non-recyclable (E.g., plastic waste) using banana leaves as plates) National Green Corps (NGC) a government program to protect and promote the conservation of ______________ (4) resources Remembering Multiple Choice Questions (1M per question) 1) Which of the following are not hospital waste? [    ] (A) used syringes (B) broken family photo frames (C) used cotton balls (D) used bandages 1 PNC_G4_SCI_T3_WB.indb 1 12-12-2019 19:59:03

2) Which of the following activities reduces the wastage of food? [    ] (A) spoiling of food due to hot climate (B) throwing away leftover food from the fridge (C) cooking only the required amount of food (D) buying and storing food in bulk Fill in the Blanks (1M per question) 3) While shopping, we should carry a cloth bag instead of buying a _________________ carry bag. 4) We can __________________ waste and make something new. Match the Following (5M) Match the pictures of wastes with their names. 5) a) metal waste 6) b) plastic waste 7) c) paper waste 8) d) vegetable waste 9) e) glass waste Ans. ________________________________________________________________________________ 2 12-12-2019 19:59:05 PNC_G4_SCI_T3_WB.indb 2

Very Short Answer Questions (1M per question) 10) What is called waste? Ans. ________________________________________________________________________________ 11) What does waste do to the environment? Ans. ________________________________________________________________________________ 12) What is the motto of NGC? Ans. ________________________________________________________________________________ Understanding Very Short Answer Questions (1M per question) 13) What are the three R’s? (Textbook, Pg. 76) Ans. ________________________________________________________________________________ 14) What is biodegradable waste? (Textbook, Pg. 76) Ans. ________________________________________________________________________________ ________________________________________________________________________________ 15) What is the meaning of conservation of the environment? Ans. ________________________________________________________________________________ ________________________________________________________________________________ Short Answer Questions (3M per question) 16) What is meant by eco-friendly materials? (Textbook, Pg. 76) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Green environment 3 PNC_G4_SCI_T3_WB.indb 3 12-12-2019 19:59:07

17) What are the plastic items that have been banned in Tamil Nadu? (Textbook, Pg. 76) Ans. ________________________________________________________________________________ ________________________________________________________________________________ Long Answer Question (4M per question) 18) Write the different steps in waste management. (Textbook, Pg. 76) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Application Short Answer Questions (3M per question) 19) Write the benefits of recycling. (Textbook, Pg. 76) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 20) Name any 5 items which are recyclable. (Textbook, Pg. 76) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 4 PNC_G4_SCI_T3_WB.indb 4 12-12-2019 19:59:08

21) Why do you think a stainless steel water bottle is safer than a plastic water bottle? Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Long Answer Question (4M per question) 22) How will you manage the household waste? (Textbook, Pg. 76) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Higher Order Thinking Skills (H.O.T.S.) Short Answer Question (3M per question) 23) Identify the eco-friendly activity and complete the given puzzle. Across: d) We should buy these types of steel bottles instead of plastic water bottles. (STAINLESS) Green environment 5 PNC_G4_SCI_T3_WB.indb 5 12-12-2019 19:59:10

Down: a) We can reuse these for storing leftovers. b) We should give up __________ gum. c) We can reduce the usage of this by writing on both sides. Ans. a) b) c) d) S T A I N L E S S 6 12-12-2019 19:59:12 PNC_G4_SCI_T3_WB.indb 6

Long Answer Question (4M per question) 24) Look at the given pictures and write a sentence on how you can reduce the wastage of each material shown. Ans. a)  b)  c)  d)  Green environment 7 PNC_G4_SCI_T3_WB.indb 7 12-12-2019 19:59:14

Lesson 2: Life of animals Concept Map Life of animals Body parts of an insect Group behaviour in animals head animal lives alone ________________ (1) tiger, bear, etc. abdomen animal lives as part of a group Special senses bees in a hive – queen bee, ants – good sense of sight, drones, worker bees smell, taste and touch birds in nests (E.g., flock of parrots, stare of crane) bats – good sense of ________________ (2) herd or parade of elephants – female head leads group, older Adaptation animals teach manners and life skills to young ones ________________ (3) – change in physical features diurnal animals – animals active (E.g., thick fur of polar bears during day time (E.g., horse) to reduce heat loss) ________________ (4) animals – animals active at night (E.g., bat) physiological – changes in body functions (E.g., Dogs Parental care shiver to generate more heat efforts to take care of young ones when it is cold.) Cow gives milk and protects behavioural – changes in its calf from the enemies. activities (E.g., Birds migrate Female kangaroo carries its baby in its pouch. to avoid extreme adverse Humans promote and support conditions.) the physical, emotional, social and intellectual development of their child. 8 12-12-2019 19:59:16 PNC_G4_SCI_T3_WB.indb 8

Remembering Multiple Choice Questions (1M per question) 1) Which of the following is an insect without wings? [    ] (A) silverfish (B) butterfly (C) cockroach (D) mosquito 2) Which of the following animals is active during both day and night? [    ] (A) cat (B) owl (C) lion (D) horse Fill in the Blanks (1M per question) 3) A group of elephants is called a _________________ or parade. 4) Honeybees collect _________________, build combs and clean their hives. Match the Following (5M) Match the picture of the animals with their characteristics. 5) a) They have heat-detecting noses which allow them to find their prey. 6) b) They have organs of smell and taste in their antennae. 7) c) The female carries its baby in its pouch. 8) d) They have gills to breathe in water. 9) e) They have broad feet to walk in the desert. Ans. ________________________________________________________________________________ Life of animals 9 PNC_G4_SCI_T3_WB.indb 9 12-12-2019 19:59:25

Very Short Answer Questions (1M per question) 10) What is parental care? Ans. ________________________________________________________________________________ 11) What is adaptation? Ans. ________________________________________________________________________________ ________________________________________________________________________________ 12) What are nocturnal animals? (Textbook, Pg. 87) Ans. ________________________________________________________________________________ ________________________________________________________________________________ Understanding Very Short Answer Questions (1M per question) 13) Why do birds build nests? (Textbook, Pg. 87) Ans. ________________________________________________________________________________ 14) What is meant by structural adaptation? (Textbook, Pg. 87) Ans. ________________________________________________________________________________ 15) How do ants feel the vibration? (Textbook, Pg. 87) Ans. ________________________________________________________________________________ 16) Why do birds fly in ‘V’ shape? (Textbook, Pg. 87) Ans. ________________________________________________________________________________ Short Answer Questions (3M per question) 17) Define echolocation. (Textbook, Pg. 87) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 10 PNC_G4_SCI_T3_WB.indb 10 12-12-2019 19:59:27

18) How is the group behaviour in bees? Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Long Answer Question (4M per question) 19) Explain the three main body regions of insect. (Textbook, Pg. 87) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Application Short Answer Questions (3M per question) 20) List out any three animals that live in groups. (Textbook, Pg. 87) Ans. ________________________________________________________________________________ ________________________________________________________________________________ 21) What are physiological adaptations? Write about any physiological adaptation in an animal that you have seen. Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Life of animals 11 PNC_G4_SCI_T3_WB.indb 11 12-12-2019 19:59:27

22) How do ants experience the world around them? Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Long Answer Question (4M per question) 23) Why do animals live in groups? (Textbook, Pg. 87) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Higher Order Thinking Skills (H.O.T.S.) Short Answer Question (3M per question) 24) Circle the words in the puzzle for the given clues. a) Fish have these to breathe in water. b) These two animals have lines on their body to hide themselves. c) Fish have these to swim in water. 12 12-12-2019 19:59:27 PNC_G4_SCI_T3_WB.indb 12

d) They migrate to avoid adverse conditions. e) The middle region of the body of an insect AF Z Z BDEH T I GE R S H I J N B B K L MN OS RR S B T U VWA A X I Z A BCS SDR E F GH I J K D LM NG I L L SQR T HOR A X S T Life of animals 13 PNC_G4_SCI_T3_WB.indb 13 12-12-2019 19:59:27

Long Answer Question (4M per question) 25) Write one adaptation each for the given animals. Ans. Animal Adaptation a)  b)  c)  d)  14 12-12-2019 19:59:33 PNC_G4_SCI_T3_WB.indb 14

Lesson 3: Air we breathe Concept Map Air we breathe Components of air Importance of air in our daily life nitrogen (78%), _____________(1) Oxygen present in air is (21%), carbon dioxide (0.03%), required for breathing. argon and other gases (0.07%) to speak and hear sounds dispersal of ____________ (2) Uses of air for plant production for the occurrence of nitrogen monsoon and rain to extend the shelf life of to regulate the atmospheric food packages, to fill the temperature tyres of vehicles, to store living cells, for plant growth Causes of air pollution oxygen soot, smoke and other particles for breathing, for burning, from car exhaust and power plants in gas welding Adverse effects of air pollution __________________________ (3) global ____________________ (4) formation of smog helps plants in photosynthesis, formation of acid rain as fire extinguishers, as dry ice, aerosol formation to make plastics and polymers depletion of ozone Steps to check air pollution Effects of air pollution on human beings using alternative sources of energy respiratory diseases cardiovascular damage using air filters fatigue, headache and anxiety regular smoke emission tests nervous system damage certification of motor vehicles planting more trees Air we breathe 15 PNC_G4_SCI_T3_WB.indb 15 12-12-2019 19:59:35

Remembering Multiple Choice Questions (1M per question) 1) Which of the following gases do we take in while breathing? [    ] (A) nitrogen (B) oxygen (C) carbon dioxide (D) argon 2) Which of the following diseases is not caused by air pollution? [    ] (A) flu (B) tuberculosis (C) irritation in the eyes (D) malaria Fill in the Blanks (1M per question) 3) The energy which we get from the Sun is called _______________ energy. 4) The ____________ we breathe consists of a mixture of gases. Match the Following (5M) Match the pictures with the different activities related to air. 5) a) reduces air pollution 6) b) oxygen cylinders 7) c) effect of air pollution 8) d) cause of air pollution 9) e) use of carbon dioxide Ans. ________________________________________________________________________________ 16 PNC_G4_SCI_T3_WB.indb 16 12-12-2019 19:59:38

Very Short Answer Questions (1M per question) 10) What are the components of air? (Textbook, Pg. 98) Ans. ________________________________________________________________________________ 11) What is needed for the respiration of plants and animals? Ans. ________________________________________________________________________________ 12) Give one example of an object that has air in it. Ans. ________________________________________________________________________________ Understanding Very Short Answer Questions (1M per question) 13) What happens when carbon dioxide is mixed with lime water? Ans. ________________________________________________________________________________ 14) What are the major contributors to air pollution? Ans. ________________________________________________________________________________ ________________________________________________________________________________ 15) What are the consequences of global warming? Ans. ________________________________________________________________________________ ________________________________________________________________________________ 16) What is aerosol? Ans. ________________________________________________________________________________ Short Answer Questions (3M per question) 17) List out the uses of carbon dioxide. (Textbook, Pg. 98) Ans. ________________________________________________________________________________ ________________________________________________________________________________ Air we breathe 17 PNC_G4_SCI_T3_WB.indb 17 12-12-2019 19:59:39

________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 18) What are the diseases caused due to air pollution? (Textbook, Pg. 98) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Long Answer Question (4M per question) 19) List out the uses of oxygen. (Textbook, Pg. 98) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Application Short Answer Questions (3M per question) 20) What are the adverse effects of air pollution? (Textbook, Pg. 98) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 18 12-12-2019 19:59:41 PNC_G4_SCI_T3_WB.indb 18

21) Give any three uses of nitrogen. Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 22) How can we reduce air pollution? (Textbook, Pg. 98) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Long Answer Question (4M per question) 23) What is the importance of air in our daily life? (Textbook, Pg. 98) Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Air we breathe 19 PNC_G4_SCI_T3_WB.indb 19 12-12-2019 19:59:43

Higher Order Thinking Skills (H.O.T.S.) Short Answer Question (3M per question) 24) Identify and write the names of the adverse effect of air pollution given in the following pictures. Write one sentence for each effect. Ans. a)  b)  c)  20 12-12-2019 19:59:45 PNC_G4_SCI_T3_WB.indb 20

Long Answer Question (4M per question) 25) Complete the given crossword puzzle on acid rain. Across: Down: b) Acid rain damages these. a) Acid rain causes this disorder. d) Acid rain causes harm to this life. c) Acid rain affects this in a plant. a) b) c) d) Air we breathe 21 PNC_G4_SCI_T3_WB.indb 21 12-12-2019 19:59:47

Inside the Lab Carton bugs (insects) Make sure you do this activity only with Let us make some carton bugs at home. the help of your teacher or an adult. You will need: egg cartons, scissors, paint, paintbrushes, wiggle eyes, markers, pipe cleaners and a hole punch You need to: a) Separate the egg cartons into various sizes using a pair of scissors. Make some that have only one cup, some with two cups and some with as many as four or five (for caterpillars). b) Choose what type of bugs you want to make. One cup works well for a spider; two work well for a bigger insect; three or more work well for a caterpillar. c) Paint your bug in any colour you wish. Let it dry. 22 12-12-2019 19:59:49 PNC_G4_SCI_T3_WB.indb 22

d) Place the carton upside down once it is dry, so that the bump is on top. Using a single-hole punch, punch holes at the base of the cup where you want the legs. For a spider, punch four holes on each side. (This step should be done under a teacher’s supervision.) e) Thread the pipe cleaners through the holes to create legs. f) Decorate the bugs using wiggle eyes, glitter, feathers and so on. g) Your carton bugs are ready now. 1) Give an example for each of the following. a) The insect that has wings which can be folded flat over their body. ____________ b) The insect which cannot fold its wings. __________________ c) The insect which does not have wing. ___________________ PNC_G4_SCI_T3_WB.indb 23 23 12-12-2019 19:59:50

2) Label the body parts of the butterfly. 24 12-12-2019 19:59:50 PNC_G4_SCI_T3_WB.indb 24

Term Project Snow house Make sure you do this activity only with the help of your teacher or an adult. From paper recycling to arts and crafts, there are lots of uses for old paper. It’s time to get creative to save this precious resource. Let’s make igloos using old news paper. Igloos or ice houses are generally built of snow and ice in very cold places. You will need: all-purpose glue, old newspapers, black and white paints, masking tape You need to: a) Create papier (paper) mache glue by mixing the entire contents of a glue bottle with one-fourth cup of water in a bowl. Set aside. b) Cut the papers into thin strips. c) Take an inflated balloon and secure it by using a couple of pieces of tape. d) Draw outlines for the bottom of the igloo and the doorway. e) Dip strips into the glue mixture, making sure to completely soak the paper. Remove the excess glue and lay the strips over the surface of the balloon. Try to keep to one layer. It helps to dry quickly. Also, try to have the pieces criss-cross and overlap. f) Make a doorway to the igloo by using a curved mould and applying the same method. g) Allow everything to dry and leave it overnight to become hard. h) Deflate the balloon slowly. PNC_G4_SCI_T3_WB.indb 25 25 12-12-2019 19:59:52

i) Trim off the marker lines to make the entrance. j) Paint the igloo white. Let it dry. Then, paint a brick pattern using black paint. k) Your snow house is ready now. 1) What are the benefits of recycling? Ans. ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 26 12-12-2019 19:59:54 PNC_G4_SCI_T3_WB.indb 26