1.
Natural processes such as volcanic eruptions, forest fires causes

2.
The energy released in the form of nuclear radiations in addition to heat and light during nuclear reactions is known as

3.
(Force × displacement) is equal to

4.
The energy coming from the sun for the last billion years is the result of a

5.
The power of the pump when it can lift 70 kg of water through 16 m in 10 s is

6.
The energy obtained from electric cells and batteries as a result of a chemical reaction is called

7.
Anna carries a 12 kg bag upstairs to a height of 15 steps. The amount of work she has done is

8.
The change in the quality of the environment that can be harmful to living things is called

9.
The interconversion of matter and energy is predicted by

10.
When a body is lifted through a height h, the work done on it appears in the form of its

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