11-1: Water Resources

What are the two kinds of water found on Earth?

• Salt water

• Fresh water

• Lagoon Water

• Marshlands

Why is Earth often called 'the Water Planet'?

• Most of earth is covered in water

• Earth has more land than water

• Earth is the only planet with water

• Earth's atmosphere is mostly water vapor

What % of Earth’s water is freshwater?

• 3%

• 1%

• 5%

• 10%

Where is most of the Earth’s freshwater found?

• Icecaps and glaciers

• Rivers and lakes

• Underground aquifers

• Atmosphere

How are cities tied to surface water?

• Most cities are built near surface water

• Cities are usually built far from surface water

• Surface water is not important for cities

• Cities are only built on mountains

What is a river system?

• A system includes all of the river tributaries

• A system includes only the main river

• A system includes only the lakes

• A system includes only the groundwater

Name 3 large river systems.

• The Mississippi, Amazon, and the Nile

• The Thames, Seine, and Danube

• The Ganges, Yangtze, and Tiber

• The Volga, Rhine, and Tigris

Why does the amount of water in a watershed vary?

• It varies because it is higher in wet regions and lower in dry regions

• It varies because of the presence of aquatic animals

• It varies due to the amount of sunlight received

• It varies because of the altitude of the watershed

What is the definition of groundwater?

• Water that is above the ground

• Water that is under the ground

• Water that is in the ocean

• Water that is in the atmosphere

What is the water table?

• Bottom boundary between saturated and unsaturated ground

• Top boundary between saturated and unsaturated ground

• Middle boundary between saturated and unsaturated ground

• No boundary between saturated and unsaturated ground