Question

Q.2

Give reasons for the following statements.

 

1. Penguins can easily live in the polar regions.

 

2. The winds flow from the sea towards the land in summer.

 

3. Place a crumpled piece of paper on the mouth of an empty bottle and it comes outside when you blow air inside the bottle.

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Answer 1

1. Penguins have easy access to prey, while nearby predators prevent them venturing too far from their habitat. In the North Pole, predators such as polar bears and arctic foxes would limit their survival.

2. During summers, the temperature over sea is low. This creates high pressure area over the sea. On the other hand, the temperature over land is high creating low pressure area. Since the winds blow from high pressure to low pressure areas, winds in summer season blow from the sea to land.

3. As you blow into the mouth of the bottle the air is moving fastest - so is at the lowest pressure. Inside the bottle, the air is moving more slowly - so a higher pressure. As the pressure is higher inside the bottle than in the mouth this pushes the paper out.

Hope this helps :)

Answer 2

Explanation:

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