Salt and Freshwater

The measure of the amount of salt in water.

• Freshwater

• Saltwater

• Salinity

• Saltiness

Approximately how much of all the water on earth is saltwater?

• 3%

• 60%

• 70%

• 97%

Tags

NGSS.MS-ESS2-4

Approximately how much of all the water on earth is available to humans for consumption?

• 1% or less

• 3%

• 70%

• 97%

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Which body of water has the highest salinity?

• Black Sea

• Dead Sea

• Indian Ocean

• Lake Michigan

If there is high evaporation in an sea, the salinity of the water will increase or decrease?

• Decrease

• Increase

• Stay the same

• Both

Tags

NGSS.MS-ESS2-4

If lots of sea water becomes frozen what will happen to the remaining water left behind?

• It will become less salty

• It will become more salty

• It will remain just as salty as ever.

• I thought salty meant something else.

Which of the following is not a freshwater source?

• Atmosphere

• Lake

• River

• Sea

Tags

NGSS.MS-ESS2-4

When comparing lakes and oceans, most lakes have

• lower levels of salt.

• higher levels of salt.

• inconsistent levels of salt.

• about the same level of salt.

What is the process called when salt is removed from seawater to make it drinkable?

• Desalination

• Evaporation

• Filtration

• Condensation

Which of the following is a characteristic of freshwater ecosystems?

• High salinity

• Presence of marine life

• Low salinity

• Tidal waves