Unit 1: Oceanography

Why is the salinity levels higher in the Mediterranean Ocean?

• precipitation

• evaporation

• volcanoes

• deposition

Seawater is typically denser than freshwater due to seawater's-

• greater depth

• smaller mass

• higher salinity

• lower freezing point

What part of the ocean floor would be most affected by sea level change?

• abyssal plain
• continental shelf
• continental slope
• trench

Tags

NGSS.MS-ESS2-4

What do the arrows represent in the picture?

• waves
• currents
• tides

What causes the tides to change?

• rotation of the Earth
• magic
• gravitational pull from the moon
• ocean currents

Tags

NGSS.MS-PS2-4

The large flat region of the ocean floor is called the 

• ocean trench
• continental shelf
• abyssal plain
• seamount 

The Gulf Stream is

• a stream behind the school

• a current in the Atlantic Ocean that flows on the eastern coast of North America

• a current in the Pacific Ocean that flows on the western coast of North America

• part of the ocean floor

Tags

NGSS.MS-ESS2-6

The average salinity of seawater is

• 35 ppt
• 5-25 ppt
• less than 1 ppt
• 22 ppt

Salinity is measured in 

• parts per million
• parts per thousand
• milligrams
• milliliters

What percentage of Earth’s surface is covered by water?

• 45%

• 51%

• 71%

• 85%

Tags

NGSS.MS-ESS2-4