Marine Science Unit 1 Review

How much of the earth's surface is covered by the ocean?

• 80%

• 50%

• 71%

• 82%

_____ % of the ocean has not been explored

• more than 80%

• less than 50%

• more than 98%

• less than 25%

What has the overall largest influence on earth's tides?

• the slope of the beach

• earth's sun

• the sun's rays

• the moon's gravitational pull

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

If the sun, moon and earth are in a straight line what type of tide is taking place?

• Spring Tide

• Neap Tide

• High Tide

• Low Tide

Tags

NGSS.MS-ESS1-1

What type of tides are in Charleston, SC?

• diurnal

• semidiurnal

• mixed semidiurnal

When does a Perigean tide occur?

• every neap tide

• twice a year during semidiurnal tides

• 3-4 times a year during spring tide

• every other month

Tags

NGSS.MS-ESS1-1

What is the average salinity of the ocean?

• 15 ppt

• 35 ppt

• 71 ppt

• 80 ppt

What are the two most abundant elements in seawater?

• sodium and chloride

• potassium and magnesium

• salt and water

• sulfate and calcium

Tags

NGSS.MS-PS1-1

Describe how salt is cycled into and out of the ocean?

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What are the Chinese famous for in the context of oceanography?

• Inventing the compass

• Discovering the North Pole

• Creating the first submarine

• Developing the theory of relativity