Oceans and Seas

They are vast bodies of salt water that separate the continents.

• oceans

• seas

• lakes

• rivers

What percentage of the planet earth is covered by the ocean?

(a)  

It is the height of the ocean´s surface at a given point on the earth´s surface.

(a)  

What are the two most important chemicals in seawater?

• chlorine

• potassium

• sodium

• sulfur

The Earth's surface is covered by ___ % of saltwater.

• 49

• 65

• 71

• 82

Tags

NGSS.MS-ESS2-4

Select two of the gases found in ocean water:

• oxygen

• helium

• carbon dioxide

• magnessium

Right now, the (a)   sea level is rising about 2.5 mm each year worldwide due to global warming.

Tags

NGSS.MS-ESS3-5

Select the name of the scientists that study the ocean:

• biologists

• oceanographers

• pedologists

• vulcanologists

Write the three factors that affect the sea level:

Tags

NGSS.HS-ESS2-4

NGSS.HS-ESS3-5

What ocean is between Africa and Australia?

• Pacific ocean

• Indian ocean

• Atlantic ocean

• Southern ocean