water

What percent of Earth's water is fresh?

• 99%
• 1%
• 3%
• 75%

The total amount of water on Earth is

• increasing
• decreasing
• staying the same

Where is most of Earth's fresh water?

• lakes
• rivers
• ocean
• ice caps and glaciers

What percent of Earth's water is salt water?

• 85%
• 1%
• 75%
• 97%

What powers the water cycle?

• water
• ocean currents
• ground water
• sun

What do we call the area of land where all of the water will drain into the same body of water?

• Watershed

• Surface water

• Water table

• Aquifer

Rivers, streams, lakes, ponds, and oceans are all examples of-

• Groundwater

• Aquifers

• Surface water

• Recharge zones

Most pollution occurs when rainwater carries pollutants across the ground into a river, stream, lake, or ocean. Which of the following terms does this describe?

• Tributary

• Runoff

• Water table

• Permeable

The depth of the water table below the surface of land____________

• is deep below a lake or river
• varies depending on local conditions
• is above the surface of a swamp
• is always at 3m

What is water called when it has high amounts of iorn, magnesium, or calcium?

• hard
• soft
• lake
• ground water