REVISION-IMPACT ON WATER

Based on the graph, US uses water the most in ______

• irrigation and agricultural crops

• livestock, mining, and aquaculture

• thermoelectric power

• industry

Which is/are the possible effects of excessive nutrients [nitrates and phosphates] carried by agricultural runoff into our bodies of water?

• algal bloom

• sunlight is unable to penetrate to the bottom of the river or lake.

• death of aquatic plants and animals

• all of the above

Which one describes algal bloom?

• rapid growth of algae on bodies of water

• increase in population of aquatic plants

• growth of aquatic animals

• nutrient-rich river resulting to increase in the population of fish

Look at the graph below. What is the main source of ocean pollution?

• dumping trash into the ocean

• airborne pollutants

• runoff from land

• offshore mining

______________________ is a structure that blocks and controls the flow of water.

• potable
• dam
• wastewater
• point source pollution

Tags

NGSS.HS-ESS2-5

______________________ is water that is beneath the earth’s surface in sediment or rock formation.

• surface water

• water pollution

• waste water

• groundwater

An underground layer of rock or sediment that holds water

• watershed

• groundwater

• permeability

• aquifer

The uppermost level at which the water in a given area fully saturates rock or soil.

• Impermeable surface
• Rock and mantle
• water table
• groundwater recharge

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Why do water sources need to be conserved?

• We have a limited amount of fresh water.
• Pollution reduces the amount of usable water.
• Because we need to save it for the whales
• Both a and b.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

What is the advantage of planting trees along a river or lake?

• It will make these surface water fresh.

• Trees will absorb the pollutants in the water.

• The trees will reduce the excessive erosion of sediments, thus protecting the aquatic organisms.

• The trees will make the view attractive to tourists.