Oceans

What % of the world is water?

• 20%

• 50%

• 70%

• 97%

What type of water is in the Ocean?

• regular water

• salt water

• fresh water

• spring water

The geographic name for the steep change just beyond the continental plain.

• continental slope

• continental rise

• abyssal plain

• oceanic trench

Before descending into the ocean trench, what is the geographic name of the underwater mesa.

• continental shelf

• continental slope

• continental rise

• abyssal plain

What does salinity measure?

• ocean temperature

• amount of salt in water

• ratio of mass to volume

Select the most dense option below.

• warm, 15% salty water

• cold, 15% salt water

• warm 5% salty water

• cold, 5% salty water

What factors change density?

• number of molecules

• temperature

• change in size (for example cut in half)

The movement of deep, cold, nutrient filled water to the surface of the ocean is..

• Ocean Current

• Upwelling

• Deep Currents

• Surface Currents

Why is upwelling important?

• Upwelling regulates ocean temperature

• Upwelling provides nutrient rich water that sustains life

• Upwelling controls the tides

• Upwelling helps sailors to navigate the seas

Two types of ocean currents are

• local and global
• sea and land
• surface and deep
• warm and cold