Intro to Aquatic Science

What might form on the ocean floor where two plates separate?

• Mid-ocean ridge
• Ocean trench
• Continental shelf
• Seamount

What two elements make the ocean salty?

• Magnesium and chlorine
• Chlorine and sodium
• Chlorine and iron
• Sodium and iron

What percent of Earth is water?

• 97%
• 50%
• 25%
• 89%

Where does most evaporation occur?

• Land
• Clouds
• the Ocean
• the atmosphere

Where does most condensation occur?

• the Atmosphere
• the Ocean
• Land
• Rivers and Lakes

What is the main cause of tides?

• The gravitational pull of land on Earth
• The magnetic pull from the poles
• The gravitational pull of the moon
• The density differences of water 

Cities closer to water most likely will be

• more dry
• more humid
• hotter

Adding salt to water makes it less dense.

• True
• False

What is the Largest Ocean? 

• Pacific Ocean 
• Atlantic Ocean 
• Arctic Ocean 
• Indian Ocean 

What is the COLDEST ocean? 

• Atlantic Ocean 
• Pacific Ocean 
• Arctic Ocean 
• Indian Ocean