Human Impact on Water

Layers and areas of rocks below ground where all the cracks and spaces between rocks are full of water is called a(n) ____________.

• sinkhole

• dam

• aquifer

• dead zone

Most water is used by __________________.

• recreation

• power plants

• food prep

• agriculture

Three percent of all water is _________.

• ocean

• rivers

• ice

• fresh water

A negative effect of building a dam is that it can _________________.

• be used for drinking water

• control water flow and flooding

• be used for recreation

• cause rivers to dry out before reaching the ocean

Where is the most fresh water found?

• lakes

• rivers

• beneath Earth's surface

Release of heat into the water that affects the temperature and ecosystem is an example of what

• Thermal pollution

• Chemical Pollution

• Biological Pollution

Which correctly describes something that can have both a positive and negative impact on the environment?

• building a dam
• picking up litter
• decreasing the use of chemical fertilizers
• using less water at home

Which is NOT a positive impact on Earth's water?

• fixing a dripping faucet
• disposing of chemicals properly
• increasing fertilizer runoff
• increasing recycling

What is the main source of freshwater for human activities?

• Saltwater

• Groundwater

• Rainwater

• Oceans

What is an aquifer?

• A type of fish

• A large lake

• An area of permeable sediment or rock that holds water

• A type of dam