HARD
Earn 100

Write the changes in the form of energy in the following activities.

Activity Form of energy Form of changed energy
Running of a petrol car

Chemical energy(fuel)

 Mechanical energy
Drum playing Muscular energy Sound energy
Ironing of cloths   Heat energy
Drying up of pappad in the hot sun Solar energy  
Cooking food using biogas    
Glowing of an electric bulb by rotating turbine    

Important Questions on Force, Work and Energy

EASY
Environmental Studies>Exploring the World>Force, Work and Energy>Energy
1kWh equal to
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Environmental Studies>Exploring the World>Force, Work and Energy>Energy
The energy produced by converting one microgram of matter completely into energy will be
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Environmental Studies>Exploring the World>Force, Work and Energy>Energy
In which of these cases is energy used up?
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Environmental Studies>Exploring the World>Force, Work and Energy>Energy
State the law of conservation of energy.
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Environmental Studies>Exploring the World>Force, Work and Energy>Energy
Differentiate between hydel energy and solar energy.
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Environmental Studies>Exploring the World>Force, Work and Energy>Energy
From where does your body get energy to do work?
EASY
Environmental Studies>Exploring the World>Force, Work and Energy>Energy
We need energy to run or play.
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Environmental Studies>Exploring the World>Force, Work and Energy>Energy
The energy stored in batteries is:
EASY
Environmental Studies>Exploring the World>Force, Work and Energy>Energy
Light is a form of _____ which gives us the sensation of sight.
EASY
Environmental Studies>Exploring the World>Force, Work and Energy>Energy

Choose the correct answer from the box and fill in the blank.

flowing water stagnant water bottled water

We use _____ to generate electricity.

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Environmental Studies>Exploring the World>Force, Work and Energy>Energy
Name three sources of energy in nature.
EASY
Environmental Studies>Exploring the World>Force, Work and Energy>Energy

Choose the correct word from the bracket and fill in the blank.

_____ (Solar/ Wind) energy is used to operate flour mills.

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Environmental Studies>Exploring the World>Force, Work and Energy>Energy
Which of these has energy stored in it?
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Environmental Studies>Exploring the World>Force, Work and Energy>Energy
Define mechanical energy. What are its two types? Give examples.
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Environmental Studies>Exploring the World>Force, Work and Energy>Energy
We get energy to run around and play from:
EASY
Environmental Studies>Exploring the World>Force, Work and Energy>Energy
The capacity to do work is called
EASY
Environmental Studies>Exploring the World>Force, Work and Energy>Energy

_____ energy is stored in photo-sensitive cells.

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Environmental Studies>Exploring the World>Force, Work and Energy>Energy
Differentiate between renewable energy and non-renewable energy.
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Environmental Studies>Exploring the World>Force, Work and Energy>Energy

In the boxes, write F for things that get energy from food; E for things that get energy from electricity; and L for things that get energy from the fuel.

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MEDIUM
Environmental Studies>Exploring the World>Force, Work and Energy>Energy
What is energy? Name any four types of energy.