ES-10.7-Earth's Dry Lands

Multiple Choice

BELLRINGER:

Which of the following statements about the Ice Age is correct?

• 30% of Earth's land was covered by ice during the Ice Age.

• Only 5% of Earth's land was covered by ice during the Ice Age.

• North America had less than 1 million square kilometers glaciated.

• There were over 100 glacial/interglacial cycles identified.

Multiple Choice

Which of the following is NOT a reason why deserts form?

• Subtropical highs

• Rain shadow effect

• Proximity to oceans

• Continental interior

Multiple Choice

Which of the following best describes the difference between a desert (arid) and a steppe (semiarid)?

• Deserts have more rainfall than steppes.

• Steppes are extremely dry, while deserts are more humid.

• Deserts are extremely dry, while steppes are a more humid variant.

• Steppes have no vegetation, while deserts are covered in plants.

Open Ended

Explain how the lack of moisture in deserts affects the weathering processes that occur there.

Multiple Choice

Which of the following are characteristics of ephemeral streams in arid regions?

• Flow year-round with constant discharge

• Flow only after rainfall and are dry most of the year

• Increase in discharge toward the sea

• Fed by groundwater

Multiple Choice

Permanent streams in humid regions are typically fed by ___, while ephemeral streams in arid regions are not.

• glacial melt

• groundwater

• polar ice-caps

• alluvial streams