Deserts, Oases, and the Sahel

Siwa is an ___.

• archipelago

• rainforest

• oasis

• island

Siwa is located in ___.

• Tunisia

• Egypt

• Sudan

• Arabia

People have permanently inhabited Siwa for ___ years.

• 500

• 1,000

• 4,000

• 12,000

Siwa receives only ___ inches of rainfall a year.

• three (3)

• nine (9)

• fifteen (15)

• twenty (20)

True or False?

Throughout history, oases have been very important for human trade and travel.

• True

• False

In a desert, an oasis is most likely to be found at a point of ___ elevation.

• high

• low

Aquifers trap and collect rainwater. Aquifers are located ___.

• on the tops of mountains

• underground; below the surface of the land

• on top of the land's surface

True or False?

"Where there is water, there is life."

• True

• False

If conditions remain "favorable," an oasis can last ___.

• decades

• centuries

• thousands of years

Deserts typically receive less than ___ inches of rainfall in a year.

• four (4)

• five (5)

• seven (7)

• ten (10)