Hydrosphere Practice Test

What % of the Earth is covered in water?

• 30
• 75
• 50
• 97

What % of the earth is freshwater?

• 97
• 3
• 75
• 10

What defines rain moving through cracks of soil and pore spaces

• Evaporation
• Runoff
• Infiltration
• Condensation

What is the energy source that powers the water cycle?

• Gravity
• Running Water
• Internal Heat of the Earth
• Sun

What process is evaporation from plants and trees?

• Evaporation
• Condensation
• Precipitation
• Transpiration

What soil type has the highest rate of permeability?

• Sand
• Silt
• Clay

Which is more porous, clay or silt?

• Silt
• Clay

Where is a water table located?

• At sea level
• At the top of the zone of saturation
• Bottom of the zone of saturation
• At the top of the zone of aeration

Water can move through soil because of the soils

• Porosity
• Permeability
• Saturation
• Solubility

What type of pollution comes from multiple areas combined and is difficult to identify the source?

• Point source pollution
• Saltwater Intrusion
• Nonpoint source pollution
• Thermal Pollution