Water Test

What percentage of the Earth's fresh water is available to us?

• 97 %

• 7 %

• 1 %

• 50 %

What is a point-source pollution?

• Oil spilling from supertanker
• Drainpipe spilling waste into river
• Toxic Chemicals
• Single sites of waste

What is a Non-Point source Pollution?

• Soil from farms
• Acid rain
• Damaged Sewer Pipe or system 
• Salts from irrigation of farm fields

What is algal bloom?

• Plants bloom early down stream
• Water becomes cloudy
• Too much of nutrients
• Extremely rapid growth of algea

Thermal pollution of water bodies is due to:

• A) Discharge of heat (hot water) from power plants.

• B) Discharge of chemicals from industries.

• C) Discharge of waste from mining.

• D) Discharge of agricultural runoff.

Industrial waste containing non-biodegradable substance left in a pool of water and a person eating a fish of that water, showing signs of toxicity is a typical example of: JH Critical

• A) biological multiplication.

• B) biological magnification.

• C) accidental care of toxicity.

• D) not fish but the person showing toxic effect.

The area of land that drains into the nearest river is called a(n)...

• runoff

• aquifer

• watershed

• valley

Water is stored underground, in a structure called a(n)...

• cavern

• well

• aquifer

• river

Waste produced by agriculture, households, industry, mining, and other human activities can end up in ______________.

• groundwater

• streams and rivers

• oceans

• All of these choices

Most water pollution is the result of __________________.

• natural processes
• animal waste
• human activities
• acid rain