Question

Give reasons for the following statements.

1. Penguins can easily live in the polar regions. (2)

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

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.​

Answer 1

Answer:

1. Penguins have to keep high body temperatures to remain active. They have thick skin and lots of fat (blubber) under their skin to keep warm in cold in qq nhi weather. They also huddle together with their friends to keep warm.

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.When we blow into the mouth of the bottle, the air near the mouth has higher speed. This decreases the pressure there. The air pressure inside the bottle is higher than near the mouth.