Hydrology

What percentage of Earth is covered with water?

• 80%

• 60%

• 50%

• 70%

What percentage of the water on Earth is fresh water?

• 97%

• 3%

• 1%

• 2%

What percentage of the water on Earth is salt water?

• 97%

• 80%

• 60%

• 95%

What causes tides to occur?

• Inertia

• Interaction of the Earth Sun and Moon

• Evaporation

• Condensation

What is the difference between in the movement of both surface and deep ocean currents?

• Surface: Wind

  Deep Ocean: Temperature and density

• Surface: Wind

  Deep Ocean: Temperature and salinity

• Surface: Wind

  Deep Ocean: Temperature and pressure

• Surface: Wind

  Deep Ocean: Temperature

How do clouds form? 

• smoke from factories
• when condensation near land freezes
• when water vapor condenses and cools 

What gives the water cycle its energy 

• sun
• moon
• fire
• ice

What source of energy below is the most important in driving the water cycle?

• Geothermal energy changes water to steam so condensation can occur

• Sunlight heats up Earth's surface water creating the process of evaporation

• Wind helps change surface water into water vapor during the process of evaporation

• Gravity is necessary to pull water downhill when it rains thus allowing water to flow into rivers and streams

This image would cause _____.

• spring tides

• neap tides

• quarter tides

• big tides

This image would cause _____.

• spring tides

• neap tides

• quarter tides

• small tides