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Name the different types of stars.
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What are we used for?
Rubber
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Give scientific reason.
Man-made materials have more demand.
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Give scientific reason.
Humus is a natural material.
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Find out.
How is lac obtained from nature?
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Find out.
How are pearls obtained?
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What is meant by complex machines?
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Why is this so a bicycle is said to be a complex machine?
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Chennai, Cuddalore, and Cauvery delta are frequently affected by floods. Give reason.
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What will happen if instead of 33 vertebrae in our body, we had one single and straight bone?
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What are the parts of a plant?
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What are the functions of the root?
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Write the causes of the following:
Storms
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Write the causes of the following:
Forest fires
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You might have seen some beautiful fireworks during Diwali. It is an example of the transformation of ______ energy into ______ energy.
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The solar cooker is an application of the ______ energy of the sun, while solar cells, solar lamps are applications of the ______ energy of the sun.
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Match the pairs.
| Group 'A' | Group 'B' | ||
| (1) | Rolling object | (a) | Heat energy |
| (2) | Food | (b) | Atomic energy |
| (3) | Stretched bow | (c) | Kinetic energy |
| (4) | Sunlight | (d) | Potential energy |
| (5) | Uranium |
(e)
|
Chemical energy
|
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Can you tell?
What are the various forms of energy?
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Can you tell?
Describe one natural chain of transformation of energy.
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Find out the types of energy from the following puzzle.

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