TCI Lesson 20 Review

What does the term 'arid' mean?

• dry or lacking rainfall

• the pattern of weather over a long period

• a great sea of sand with tall sand dunes in the Sahara

• an isolated spot in a desert where water is found

a crop that is grown to be sold rather than to be consumed by the farmers and their families

• desertification

• hammada

• cash crop

• marginal land

the process by which land becomes more and more dry until it turns into desert

• Technology

• Desertification
• Soil erosion
• Climate change

a great sea of sand with tall sand dunes in the Sahara

• hammada

• reg

• erg

• oasis

a high, rock-covered flatland in the Sahara

• reg

• hammada

• oasis

• erg

How would you define 'marginal land'?

• an isolated spot in a desert where water is found

• land that is not well suited for growing crops

• any natural feature of Earth’s surface that has a distinct shape

• a gravel-covered desert plain

an isolated spot in a desert where water is found

• mirage
• well

• oasis

• spring

groups of herders who move with their animals from place to place in search of pasture and water

• Farmers
• Traders

• Settlers
• Pastoral nomads

What is a 'reg'?

• a gravel-covered desert plain

• an area defined by one or more natural or cultural characteristics that set it apart from other areas

• land that is not well suited for growing crops

• a great sea of sand with tall sand dunes in the Sahara

steady winds in tropical latitudes that blow toward the equator from the north and south

• Polar Easterlies
• Trade Winds
• Monsoon Winds
• Prevailing Westerlies