Env Management IGCSE PRE -IB 1 chp 4

What percentage of the Earth's surface is covered in water?

• • a) 50%

• • b) 60%

• • c) 75%

• • d) 85%

What percentage of the Earth's water is fresh and potentially usable by humans?

• • a) 1%

• • b) 3%

• • c) 10%

• • d) 15%

What is the process called when water turns from a liquid to a vapor?

• • a) Condensation

• • b) Evaporation

• • c) Precipitation

• • d) Transpiration

Which term describes the horizontal movement of water through rock?

• • a) Surface runoff

• • b) Infiltration

• • c) Groundwater flow

• • d) Through flow

Which process involves water being stopped from reaching the ground by vegetation?

• • a) Interception

• • b) Infiltration

• • c) Surface runoff

• • d) Transpiration

What is the largest use of water in agriculture?

• • a) Drinking for livestock

• • b) Irrigation

• • c) Cleaning equipment

• • d) Transportation of produce

What has the fastest-growing demand for water?

• • a) Domestic use

• • b) Industrial use

• • c) Agricultural use

• • d) Recreational use

Which sector uses the most water in more economically developed countries (MEDCs)?

• • a) Drinking and cooking

• • b) Washing and flushing toilets

• • c) Watering gardens

• • d) Industrial cooling

What is an aquifer?

• • a) A man-made reservoir

• • b) A porous rock that stores water underground

• • c) A surface lake used for water storage

• • d) A desalination plant

Which method involves removing salt from seawater to make it potable?

• • a) Distillation

• • b) Filtration

• • c) Irrigation

• • d) Infiltration