Oceanography

Salinity means

• how many fish are in the water
• how much salt is in the water

Tags

NGSS.5-ESS2-2

The ocean covers 50% of Earth's surface.

• True
• False

List the layers of the ocean from closest to the surface to furthest from the surface:

• deep zone, surface zone, thermocline

• thermocline, deep zone, surface zone

• surface zone, thermocline, deep zone

• surface zone, deep zone, thermocline

The density of ocean water depends on what two factors?

• temperature and global winds
• temperature and nutrients
• salinity and upwelling
• salinity and temperature

Which ocean is the largest?

• Pacific Ocean

• Atlantic Ocean

• Indian OCean

• Arctic Ocean

• Southern Ocean

The ocean floor 

• is always a flat bed of sand 
• has mountains, plains, and ridges like land surfaces
• is covered by the same amount of water everywhere
• covers less area than land

Tags

NGSS.MS-ESS2-3

Which best describes the continental shelf?

• a flat underwater valley 
• a region of mountains in the deep ocean 
• a shallow area of sediment near the shore 
• a region with high water pressure 

Plankton are microscopic single-celled organisms that provide food for many fish, and other sea organisms.

• True

• False

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

As you go deeper in the ocean, the _______ decreases. 

• water
• salinity
• temperature
• water pressure 

Which of the following is caused by differences in ocean water density?

• surface currents
•  deep currents
• waves
• Coriolis effect

Tags

NGSS.MS-ESS2-6