Enviro Ch 10

The largest reserves of freshwater on Earth are found in

• lakes and wetlands

• rivers and groundwater

• aquifers

• polar ice caps and glaciers

Most of the water on Earth is found in

• lakes and rivers

• polar ice caps

• glaciers

• oceans

The greatest use of water is for

• irrigation

• industry

• human consumption

• washing and flushing toilets

Treadle pumps

• work like a step exercise machine

• pump groundwater from just a few feet below the surface to a field

• are in use in eastern Asia and parts of Africa

• all of the above

Which is NOT an example of grey water?

• water from a sink

• water from a toilet

• water from a clothes washer

• water from a shower

The Three Gorges Dam

• will allow China to have a large surplus of fresh water

• will not require the relocation of people

• is the largest hydroelectric project in the world

• will be coupled with several desalinization plants

Floods are becoming more common primarily because

• precipitation has increased worldwise
• populations are more concentrated in more vulnerable watersheds 
• land use has changed, altering runoff, erosion and infiltration patterns
• the "sponge effect" of forests releases large and unpredictable amounts of water

How has converting forests to mostly paved urban areas changed the streams and rivers in the affected watersheds?

• flooding has decreased
• infiltration shifts to runoff
• evaportation has increased
• levels of water flow and pollution have decreased

What part of the water cycle does this picture show?

• condensation
• precipitation
• evaporation

Tags

NGSS.MS-ESS2-4

Which best explains why runoff is important?

• It returns water to other locations on Earth
• It increases the chance of flooding
• It makes evaporation occur faster
• It increases condensation

Tags

NGSS.MS-ESS2-4