9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3

ENVIRONMENTAL STUDIES – I (SCIENCE) by classklapTM WORKBOOK – TERM 3 Enhanced Edition 4 Name: ___________________________________ Section: ________________ Roll No.: _________ School: __________________________________ NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 1 1/9/2019 4:29:04 PM

Contents Class 4 1 4 Fuels������������������������������������������������������������������������������������������������������������������������������� 1 1 5 Ways of Communication�������������������������������������������������������������������������������������������� 5 1 6 Force and Work���������������������������������������������������������������������������������������������������������� 10 1 7 Forms of Energy���������������������������������������������������������������������������������������������������������� 14 NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 2 1/9/2019 4:29:05 PM

Lesson 14 Fuels Remembering Multiple Choice Questions 1) From the following, identify the fuel in solid form. [     ] (A) petrol (B) firewood (C) LPG (D) diesel 2) How are fossil fuels dug out? [     ] (A) through crushing (B) through mining (C) through grinding (D) through mixing Fill in the Blanks 3) Vehicles get energy to run from _____________________. 4) Natural gas is a fuel in _________________________________ form. Very Short Answer Questions 5) Give an example of domestic fuel in liquid form. Ans. ____________________________________________________________________________________ 6) What do we call a hole dug into the ground to take out fuels? Ans. ____________________________________________________________________________________ Short Answer Question 7) What are fossil fuels? Give an example. Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 3 1 1/9/2019 4:29:05 PM

Understanding True or False 8) Motor fuels are generally used to run vehicles.  [       ] 9) Aeroplanes run on electricity. [      ] 10) Petrol is the most common fuel used in two-wheelers today. [       ] 11) Boats and ships with power engines mostly use water as a fuel. [       ] Short Answer Questions 12) What are motor fuels? Where do we get them from? Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 13) Name any two road vehicles that run on diesel. Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Long Answer Question 14) State the uses of the following: a) CNG b) LPG Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 2 1/9/2019 4:29:05 PM NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 4

Application Multiple Choice Questions 15) Which of the following can be done to save fuels?  [     ] (A) using vehicles for walkable distances (B) not using public transport (C) switching off vehicles at signals (D) not taking care of our vehicles 16) Which of the following is not obtained from fossil fuels? [     ] (A) plastic (B) glass (C) medicines (D) cosmetics Short Answer Questions 17) Do you have a vehicle at home? What do your parents and you do to take care of it so that it consumes less fuel? Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 18) Write whether Right or Wrong: a) Some people use bicycles in place of motor vehicles to save fuel. [       ] b) People should never use carpooling (sharing car) though it saves fuel. [       ] Long Answer Question 19) Ashraf has seen many petrol pumps and shops for LPG everywhere. He wonders why we should use fuel carefully if so much fuel is available anyway. Explain to him the reasons for using fuels carefully. Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Fuels 3 NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 5 1/9/2019 4:29:05 PM

____________________________________________________________________________________ ____________________________________________________________________________________ Higher Order Thinking Skills (H.O.T.S.) Long Answer Question 20) Distinguish between renewable and non-renewable fuels. Ans. Renewable fuels Non-renewable fuels _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ 4 1/9/2019 4:29:05 PM NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 6

Lesson 15 Ways of Communication Remembering Multiple Choice Questions 1) What means of communication should we use to communicate with less number of people? [   ] (A) television (B) radio (C) newspaper (D) telephone 2) Which of the following is a written form of communication? [     ] (A) letter (B) television (C) telephone (D) radio Fill in the Blanks 3) _____________________________________ can be between a few people or many people. 4) Radio, internet and newspaper are the ways to share _______________________________. Very Short Answer Questions 5) Give an example of communication in audio form. Ans. ____________________________________________________________________________________ 6) Give an example of communication with many people. Ans. ____________________________________________________________________________________ Short Answer Question 7) When does communication occur? Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 7 5 1/9/2019 4:29:05 PM

Understanding Match the Following 8)  a) envelope with letter 9) b) postbox 10) c) postcard 11) d) inland letter Short Answer Questions 12) How do we mostly send letters these days? How is it better than using a postcard? Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 13) What happens to the letters that we put in a postbox? Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 6 1/9/2019 4:29:05 PM NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 8

Long Answer Question 14) How do mobile phones use radio waves to send and receive information? Use the images as hints and write in the space provided. ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ Application Multiple Choice Questions 15) Which of the following is a benefit of using computers and mobile phones?  [     ] (A) Bright screens of computers may harm our eyes. (B) We can spend a lot of time playing video games on mobiles which may affect our health. (C) We can stay in touch with our family and friends. (D) Earphones that we use may be harmful to our ears. Ways of Communication 7 NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 9 1/9/2019 4:29:05 PM

16) Which of the following health problems is caused mostly due to the overuse of mobile phones? [   ] (A) fever (B) pain in legs (C) stomach problems (D) eye problems Short Answer Questions 17) How can we learn new things from the internet? Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 18) Give examples of social networking media of communication. Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Long Answer Question 19) What are the benefits and problems of communication media? Benefits Problems _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ 8 1/9/2019 4:29:05 PM NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 10

Higher Order Thinking Skills (H.O.T.S.) Long Answer Question 20) Prepare a birthday message for your friend using pictographs. Ans. Ways of Communication 9 NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 11 1/9/2019 4:29:05 PM

Lesson 16 Force and Work Remembering Multiple Choice Questions 1) Why is force applied in the given picture? [   ] (A) for pushing (B) for pulling (C) for both pushing and pulling (D) for changing shape 2) What is the child in the given picture doing? [   ] (A) applying force to stop the ball (B) applying force to change the shape of the ball (C) applying force to change the direction of the ball (D) breaking the ball into two pieces Fill in the Blanks 3) Depending on the applied ____________________________, objects move faster or slower. 4) If we press against a plastic bottle, its ___________________________ will change. Very Short Answer Questions 5) What type of force is shown in the given picture? (Push/Pull) Ans. ____________________________________________________________________________________ 6) How can we burst a fully blown balloon using force? Ans. ____________________________________________________________________________________ 10 1/9/2019 4:29:05 PM NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 12

Short Answer Question 7) When do we need to apply force? Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Understanding True or False 8) A smooth surface causes more friction.  [       ] 9) The raindrops are pulled towards the ground by the force of friction.  [       ] 10) Friction helps us to hold things tight. [       ] 11) Without friction, moving things will not stop. [       ] Short Answer Questions 12) Give two examples of the force of gravity. Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 13) How does oil help to reduce friction? Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Long Answer Question 14) Write a note on friction. Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Force and Work 11 NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 13 1/9/2019 4:29:05 PM

____________________________________________________________________________________ ____________________________________________________________________________________ Application Multiple Choice Questions 15) Choose the incorrect statement from the given statements.  [     ] (A) When we put force on an object and move it, we do work. (B) When we hit a ball using a bat, there is no work done. (C) We do work when we pick up a box from the ground. (D) If we make a pot from clay, there is work done. 16) In which of the following situations is work done? [     ] ( A) Munaf is sitting on a chair. (B) A car is parked in a garage. (C) Ana lifted a heavy box from the ground. (D) Tanya is watching a movie. Short Answer Questions 17) When is work said to be done? Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 18) Look at the given picture. Can we say that work is done? Give a reason. 12 1/9/2019 4:29:05 PM NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 14

Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Long Answer Question 19) How can we say that work is done in the following situation? Lifting a bottle kept on the table. Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Higher Order Thinking Skills (H.O.T.S.) Long Answer Question 20) Read the statements given below. Tick () where work is done and cross () where work is not done. a) Ravi is carrying a heavy bag in his hand and sitting in one place. b) Raju is reading a book sitting at a table. c) Rashi is watching TV sitting on a chair.  d) Rina is walking up the stairs with a small bag on her shoulder. Force and Work 13 NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 15 1/9/2019 4:29:05 PM

Lesson 17 Forms of Energy Remembering Multiple Choice Questions 1) Which of the following is the basic source of energy on the Earth? [     ] (A) fuel (B) wind (C) water (D) Sun 2) Which of the following provides heat and light naturally? [     ] (A) wind energy (B) water (C) solar energy (D) food Fill in the Blanks 3) The energy we get from the Sun is called _____________________________________. 4) Vehicles get energy from ___________________________________. Very Short Answer Questions 5) State any one natural source of energy. Ans. ____________________________________________________________________________________ 6) Name a source of energy which is limited. Ans. ____________________________________________________________________________________ 14 1/9/2019 4:29:05 PM NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 16

Short Answer Question 7) What is the use of solar energy for plants? Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Understanding Match the Following 8) fans and bulbs get energy from a) light energy 9) objects thrown upwards come down due to b) heat energy 10) the form of energy we can see is c) electricity 11) we feel warmth because of d) gravity Short Answer Questions 12) Identify the sources of energy being used in the following pictures. a) b) _________________________________ __________________________________ 13) What will happen if you throw an eraser in the upward direction? Which energy is used in this case? Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Forms of Energy 15 NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 17 1/9/2019 4:29:05 PM

Long Answer Question ________________________ 14) What are the uses of electricity? Use the images as hints. ________________________ ________________________ a) ________________________ b) ________________________ ________________________ ________________________ ________________________ c) ________________________ d) ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ e) ________________________ f) ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ g) ________________________ h) ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ Application Multiple Choice Questions 15) Which of the following forms of energy lights up tube lights?  [     ] (A) electricity (B) gravity (C) elastic (D) sound 16 1/9/2019 4:29:05 PM NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 18

16) Which of the following forms of energy will we use to cook our food? [     ] (A) water (B) wind (C) heat (D) sound Short Answer Questions 17) Which use of electrical energy is shown in the picture? Give another use of electrical energy. Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 18) Which use of energy is shown in the picture? State how it is helpful in our daily life. Ans. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Long Answer Question 19) Write the uses of energy based on the following images. a) b) c) d) _____________________ _____________________ _____________________ _____________________ _____________________ _____________________ _____________________ _____________________ Forms of Energy 17 NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 19 1/9/2019 4:29:05 PM

Higher Order Thinking Skills (H.O.T.S.) Long Answer Question 20) Make a poster using a chart paper on ‘how to conserve energy’. You may use the following points: • turning off electrical devices when not in use • recycling of paper • using renewable sources of energy • minimising the use of plastic 18 1/9/2019 4:29:05 PM NR_BGM_9789386663474 MAPLE G04 EVS I (SCIENCE) WORKBOOK TERM 3_Text.pdf 20