Unit 7 Test

How much of the Earth's water is freshwater?

• 3%

• 5%

• 23%

• 97%

What is the Water Cycle?

• The water cycle is the continuous movement of water on, above, and below the surface of the Earth.
• The water cycle is the rotation of the Earth on its axis
• The water cycle is the movement of air around the Earth
• The water cycle is the process of water turning into ice

What is Evaporation in the Water Cycle?

• Evaporation is the process by which water changes from a solid to a gas.
• Evaporation is the process by which water changes from a gas to a solid.
• Evaporation is the process by which water changes from a gas to a liquid.
• Evaporation is the process by which water changes from a liquid to a gas or vapor.

What is Condensation in the Water Cycle?

• Condensation is the process in the water cycle where water vapor turns into solid ice directly without becoming liquid first.
• Condensation is the process in the water cycle where water vapor in the air cools and changes into liquid water, forming clouds.
• Condensation is the process in the water cycle where water vapor evaporates into the air.
• Condensation is the process in the water cycle where water vapor changes into gas form.

What is Precipitation in the Water Cycle?

• Water vapor in the atmosphere condensing into water droplets or ice crystals and falling to the Earth's surface as rain, snow, sleet, or hail.
• Precipitation is the result of water freezing into ice in the atmosphere
• Precipitation is the process of water turning into steam
• Water vapor in the atmosphere evaporating into the air and disappearing

What makes up a river system?

• Main river channel, lakes, and the surrounding land area
• Tributaries, mountains, and the surrounding land area
• Main river channel, tributaries, and the surrounding land area (watershed)
• Main river channel, estuaries, and the surrounding land area

How do ponds and lakes form?

• When water collects in hollows and low-lying areas of land

• Ponds and lakes form from excessive rainfall
• Ponds and lakes form from the accumulation of ocean water
• Ponds and lakes form from underground springs

What is a watershed?

• A watershed is a type of water filter used in homes
• A watershed is a type of weather phenomenon that causes heavy rainfall
• A watershed is a type of hiking trail in mountainous regions
• A watershed is an area of land where all of the water that is under it or drains off of it goes into the same place, such as a river, lake, or ocean.

How can people obtain water from underground?

• From an aquifer by drilling a well below he water table

• Waiting for rain to seep into the ground and fill up containers
• Asking a magician to magically summon the water
• Using a ladder to climb down and fetch the water

What does permeable mean?

• Preventing liquids or gases from passing through
• Being completely solid and impenetrable
• Allowing only solids to pass through
• Allowing liquids or gases to pass through