West Africa review

What two climates does this image show?

• desert and tundra

• desert and rainforest

• desert and ocean

• dessert and black forest ham

What 3 factors lead to the desertification of the Sahara?

• overgrazing

• excessive rain

• deforestation

• climate change

What evidence did scientists find in the Sahara to determine it had more vegetation long ago?

• ancient people mailed a letter describing vegetation to modern people

• animal and plant paintings on rocks

• there was never lots of vegetation in the Sahara

• there is still lots of vegetation growing in the Sahara

What is the hot, dry air blowing across the Sahara Desert called?

• Sahel

• harmattan

• snow

• wadi

What does the orange section of this map represent?

• rainforest

• population density

• harmattan

• Sahel

What percentage of the yearly rain falls in Sept, Oct, Nov, and Dec together in MILLIMETERS?

• 2%

• 18%

• 22%

• 69%

• 70%

How many months of the year has the record high been above 44.9 degrees Celsius?

• 6

• 7

• 8

• 12

What causes the Niger River to lose water as it flows toward the ocean?

• evaporation

• it is absorbed into the ground

• animals drink large quantities

• there is less rain

What is the main source of electricity in western Africa?

• coal

• nuclear power

• hydroelectricity

• there is no electricity anywhere

Why is child slavery hard to stop on Lake Volta in Ghana?

• slave masters are very wealthy and pay child slaves a high income every day

• the government is not aware there is trafficking happening

• extremely poor parents sell their children to earn an income and there is a demand for fishing workers