Hydrosphere Test Review (Post-assessment)

Which of the following methods is used to remove impurities from water?

• Filtration

• Cholroination

• Aeration

• coagulation

• all of the above

What is an indication that a lake is healthy?

• a pH of 3.5

• a pH of 10

• low number of bioindicators

• high number of bioindicators

A substance that is harmful to the environment is a

• point source pollution

• nonpoint source pollution

• pollution

• pollutant

Most of Earth’s freshwater is located _________________.

• In the oceans

• Underground

• In the polar ice caps

• In rivers and lakes

What property of water allows it to form into drops?

• Cohesion

• Adhesion

• Capillary action

• Density

Sam threw an object into his backyard pool. The object will float if it _____.

• Has more volume than water

• Is more dense than the water

• Has less volume than the water

• Is less dense than the water

Over 70% of the earth’s surface is covered by _____.

• Soil

• Salt water

• Fresh water

• Ice

Which of the following is where water is found in deep layers of rock?

• Groundwater

• Aquifer

• Well

• Surface Water

Condensation is a change in water from a

• solid to liquid

• liquid to solid

• gas to liquid

• liquid to gas

What is the small area of land that drains all water to a stream or wetland when the surface is saturated?

• River Basin

• Watershed

• Estuary

• Aquifer