Water Systems

Water on earth can be found in the form of _____.

• Water Vapor 

• Liquid Water 

• Ice 

• All of the Above

Tags

NGSS.MS-ESS2-4

The graph shows the distribution of the freshwater resources of Earth. Based on the date in this graph, which of these sources of fresh water corresponds to Source 1?

• atmospheric water

• surface water

• frozen water

• groundwater

Tags

NGSS.MS-ESS2-4

Why is fresh water a limited resource?

• It isn't because fresh water is a renewable resource.

• 97% of water is in the oceans and too salty to drink.

• Only 3% is fresh water and 2.5% is inaccessible because it is in the form of glaciers, polar ice caps and in the atmosphere.

• It isn't because I have a Sodasteam.

Tags

NGSS.MS-ESS2-4

What percentage of Earth's water is salt water?

• 90%

• 80%

• 75%

• 97%

What is the average depth of the oceans?

• 4.8 km

• 2.5 km

• 5.0 km

• 3.2 km

What is the term used to describe the concentration of dissolved salts in water?

• Salinity

• Viscosity

• Density

• Conductivity

What is a watershed?

• An area of land where water drains into one large main water body

• A large body of salt water

• A type of water reservoir

• A source of underground water

Tags

NGSS.MS-ESS2-4

What is the main purpose of the canals and locks built along the St. Lawrence River?

• To control the river's water level

• To prevent pollution in the river

• To allow large freighters to pass between the river and the Great Lakes

• To create a safe habitat for marine life

What is the main reason for the high salinity of ocean water?

• Low pressure

• High acidity

• High temperature

• Presence of dissolved salts

What is the main source of fresh water in many communities?

• Ponds

• Lakes

• Human-made reservoirs

• Rivers