Polar Regions of Earth

The polar regions are inhospitable places to live. What does inhospitable mean?

• unknown and mysterious

• harsh or unwelcoming

• warm and inviting

• simple and enjoyable

Which word best explains why Arctic fox's fur turns white in the winter?

• protection

• communication

• hibernation

• infection

What is the difference between the Arctic and Antarctic regions?

• The Arctic is cold all year-round, while Antarctica has a warmer summer season

• Antarctica is always cold and Arctic is always warm

• Antarctica is cold all year-round, while Arctic has a warmer summer season

• The Arctic is always cold, and Antarctica is always warm

Why do Caribou migrate?

• to change the color of their fur

• to stay warm and find food

• to avoid the Native people

• to move toward the polar regions

Which of the following sentences from the book is an opinion about polar regions?

• All of the warmth on Earth comes from rays of energy from the Sun

• The North Pole sits in the middle of the Arctic Ocean, which is covered by a layer of ice called an ice cap.

• It seems as though no plant or animal life could survive there.

• Animal life is abundant during the Arctic Summer.

What do the photographs in the "Introduction" help the readers understand?

• the landscape of the polar regions

• the location of the polar regions

• the reasons why life does not exist in polar regions

• the ways polar regions compare to other regions on Earth

What is the main idea of the section "Life in the Antarctic?"

• Parts of Antarctica are mountainous, and these areas are even colder

• The Antarctic is a very cold region where only a few tough animals species can live.

• The Antarctic is the only place to find Emperor Penguins and sea lions

• Penguins stay warm with their waterproof feathers and layer of fat called blubber.

Why does the author describe the polar regions as areas of wilderness?

• The polar regions are visited by tourists

• The polar regions are so inhospitable that no animals can survive there

• The polar regions are mountainous

• The polar regions are unchanged and mostly uninhabited by people

What causes the polar regions to be so cold?

• The white surface of the polar regions absorbs the sun's rays

• The Sun's rays hitting the polar regions are strong and direct

• The polar regions are often tilted away from the Sun

• The Moon blocks the Sun's rays that would have hit the polar regions

How does the temperature at the Equator compare with the temperature at the poles?

• The equator's temperature is much hotter than that found at the poles

• The equator is hot when the poles are cold, and cold when the poles are hot

• The equator and the poles have roughly the same temperature

• The equator's temperature is much colder than that found at the poles.