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.
Answers
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 weath…
2.
A sea breeze describes a wind that blows from the ocean inland towards land. ... However, water heats up much more slowly than land and so the air above the land will be warmer compared to the air over the ocean. The warm air over the land will rise throughout the day, causing low pressure at the surface.
3.
As you know the atmospheric pressure is 1 bar. This means if you have an open bottle, the pressure inside is the same as outside which is 1 bar. Also, if you close that bottle, the pressure inside the bottle will again be 1 bar.
Now lets take the air out of that bottle. Put your mouth on it and start sucking the air out of the bottle, you will see the bottle crumpling.
What exactly happens is that when you suck the air, the pressure inside this bottle will drop as there will be less air in the bottle. This happens when sucking only. But the crumpling happens because the pressure outside the bottle become greater than the inside of this bottle. Once the pressure outside is higher than inside, the air on the outside will squeez down on the bottle crumpling it up.
If the bottle was glass, if you suck the air out, nothing will physically happen to the bottle because it is solid. But the pressure inside the bottle will drop, and when pressure drops inside, the air on the outside will squeez the glass, but the glass can resist this force making it look like nothing is happening.
Hope you understood, good luck.
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Answer:
1.) Because their fur on their is thick enough to survive in the polar regions and it's their habitat.
2.)The sun heats up the ocean surface and the land. the wind will blow from the higher pressure over the water to lower pressure over the land in summer.
3.)As you blow into the mouth of the bottle the air is moving faster so is at the lowest pressure inside the bottle air is moving slowly so a high pressure as the pressure is higher inside the bottle then it in the mouth this pushes the paper out.