Fresh water and erosion review

Explain the relationship between plant cover and wind erosion.

• Plant cover increases wind erosion
• Plant cover reduces wind erosion
• Plant cover does not affect wind erosion
• Wind erosion increases where soil is covered by grass.

Which river would cause the most erosion? -Gradient (slope)  -Discharge (amount of water)

• Low gradient, high discharge,
• High gradient, low discharge
• High gradient, high discharge
• Low gradient, low discharge

The majority of fresh water is located where?

• underground
• in ice caps/glaciers
• in lakes, rivers, streams
• in clouds

How much fresh water is available for humans to use?

• 97%
• 3%
• 1%
• less than 1%

Groundwater in an area flows at a speed of 8 km/h. How long would it take the water to flow 16 km to its spring?

• 4 hours
• 2 hours
• 3 hours
• 8 hours

The total amount of water on Earth ___________________.

• is increasing.
• is decreasing.
• is fairly constant.
• depends on the weather

Which contains the greatest amount of fresh water available for human consumption?

• groundwater
• oceans and seas
• lakes and rivers
• glaciers and polar ice caps

Water on Earth is found naturally as a solid, a liquid, and a gas. Where is MOST of the SOLID water on Earth?

• deep in Earth's mantle
• in Earth's polar regions
• in the outer atmosphere
• at the bottom of the ocean

The major source of erosion is _________.

• wind
• ice
• moving water
• snow

The types of water distribution from greatest to least on Earth are :

• water vapor, rivers, ice/glaciers
• saltwater, ice/glaciers, groundwater
• saltwater, groundwater, ice/glaciers
• water vapor, groundwater, saltwater