Chapter 7 6th Grade Social studies

What geographic feature stretches nearly the entire width of South America?

• Amazon Basin

• Andes Mountains

• Angel Falls

• Guiana Highland

What best describes the climate found in the highest elevations of the Andes Mountains.

• Cold with little rainfall

• Cool, with some rainfall

• Warm, with adequate rainfall

• Hot with extreme rainfall

Witch of the following threatens rain forest land?

• Animal ecosystems

• flooding rivers

• growing populations

• insect species

What causes the Atacama Desert to be so dry?

• The Andes Mountains prevents moist winds from reaching the coast of chile.

• The Amazon Basin is too wide for wind currents to reach the desert.

• The Peru Current keeps moisture away from the coast of chile

• The Brazil current drops almost all its moisture in the Amazon Basin.

What do Greenhouse gases do?

• give off dry air, causing deforestation

• improve the air quality on Earth.

• trap heat energy, causing the Earth to warm

• Help maintain healthy ecosystems

How were the Inca able to farm on the slopes of the Andes Mountains?

• Connecting roads

• crop rotations

• suspension bridges

• terraced fields

Which of the following is an achievement of the Inca civilization?

• archaeological excavation

• irrigation canals

• slash-and-burn agriculture

• diamond mines

What did the Treaty of Tordesillas do?

• gave Columbus permission to sail to South America

• Converted the native populations to new religious beliefs

• divided newly discovered lands between Spain and Portugal

• permitted the use of slaves to work on plantations

What is one reason that people have lived in South America's lowlands for thousands of years

• extreme climate

• food supply

• group kinship

• advanced society

African slaves were used to harvest which two plantation crops?

• beans and coffee

• corn and cassava

• rice and bananas

• sugar and coffee