[5 Marks Each] QUE-ANS

Question 15 Marks

List actions that you see in the picture above and fill in the following table.

Activity	Source of Energy
A child carrying a school bag.	Food

Answer

Activity	Source of Energy
A child carrying a school bag.	Food
Scooter and car moving on a road.	Fuel - petrol or diesel
A person carrying sack on his back.	Food
Clothes drying.	Sun
A woman grinding grain.	Food
A man charging a phone.	Electricity
A house getting electricity from solar panels.	Sunlight
A woman drawing water.	Food
A boy flying a kite.	Wind
A man pulling a bullock cart.	Food
A man riding a bicycle.	Food
A man carrying something in his hand.	Food
A tractor working in the field.	Fuel - petrol or diesel
A windmill rotating.	Wind
A water wheel spinning.	Water

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Question 25 Marks

Create and share:
(a) Draw or make a simple plan of a ‘clean energy home’ that uses solar, wind or any such source of energy.
(b) Make ‘my energy diary’ for one day, record the number of times you have used the electricity fuel and so on.

Answer

(a) Clean Energy Home Using Solar Energy:

Place solar panel on the roof.
Solar panels capture sunlight from Sun and change it into electricity.
This electricity runs lights, fans, TV, fridge and other machines in the house.
Using solar panel reduces pollution because sunlight is a clean and natural source of energy.

(b)

Source of Energy	Activity/Use	Number of Times
Electricity	Using fan	6
	Switching on lights	4
	Watching TV	3
	Charging phone	2
	Grinding	1
Fuel	Cooking with gas	3
	Riding car	1
Solar Energy	Drying clothes in sunlight	1
	Heating water	1

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Question 35 Marks

From your observation write down at least three things that you have noticed:
1. Moving
2. Providing light
3. Making a sound
4. Making things cool
5. Making things hot

Answer

1. Pinwheel, Water wheel and Motor wheel
2. Sunlight, LED bulbs and Lamps (diya)
3. Thunder, Speaker and Vehicle horns
4. Breeze, Refrigerator and Air conditioner
5. Sunlight, Gas stove and Solar cooker

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Question 45 Marks

Walk around your home or classroom. Identify five things that run on electricity. Fill in the following table.

Device	What it does?	What it requires? (light/ sound/ heat/ movement/ cooling/ other)
1. Fan	Blows air	Movement

From the above examples, did you notice that electricity can be used for movement, and producing sound, light and heat?

Answer

Device	What it does?	What it requires? (light/ sound/ heat/ movement/ cooling/ other)
1. Fan	Blows air	Movement
2. Bulb	Gives light	Light
3. TV	Shows pictures and plays sound	Light and sound
4. Fridge	Keeps food cool and fresh	Cooling and light
5. Iron	Removes wrinkles from clothes	Heat
6. Mixer	Grinds food	Movement and sound

Yes, from the above examples, we notice that electricity can be used for movement (fan, mixer), light (bulb, TV), sound (TV, mixer), heating (iron), and cooling (fridge).

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Question 55 Marks

What is the importance of using clean energy ? Name three clean sources of energy and give one example where each of them is used.

Answer

Self

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EVS [5 Marks Each] QUE-ANS

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