Watersheds Aquifers

What is the type of water that moves underground?

• surface water
• water table
• groundwater
• watershed

Which of these most directly prevents erosion in a watershed?

• plant life
• soil type
• agricultural irrigation
• sediment transport

When bleach and other cleaners are poured down the drain and make their way into the water supply, which type of pollution as occurred?

• thermal pollution
• biological pollution
• thermal pollution
• chemical pollution

Acids have a pH value less than 7. Which substance is the strongest acid?

• milk
• bleach
• seawater
• lemon juice

Humans can cause different types of pollution. When fertilizers and pesticides make their way into water systems, which type of pollution has taken place?

• air
• thermal
• chemical
• biological

Which would increase the amount of runoff you get?

• Vegetation
• More plants
• Urban Development

What do you call the land that water flows across, under, and through on its way to a body of water?

• Tributary
• River system
• Headwaters
• Watershed

An area of land where the surface water and ground water drain into a particular body of water.

• aquifer
• watershed
• subsidence
• divide

In Texas, why is it dangerous if wastewater is emptied directly into local rivers, lakes, and bays?

• Wastewater can flow too quickly into the ocean and cause the sea level to rise.
• Wastewater can evaporate and cause air pollution.
•  Wastewater does not mix well with fresh water, so disrupts the flow of fresh water.
• Wastewater often contains contaminants that can kill aquatic organisms.

Most water pollution is the result of __________________.

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