Ch 16/17 Test Review

Why are Earth's oceans salty?

• Rain washed salts into them

• They contain a lot of water vapor

• Algal blooms in the ocean produced salt

Tags

NGSS.MS-ESS2-4

Which description best characterizes the seafloor?

• mostly flat

• full of life-forms

• similar to the continents

Tags

NGSS.MS-ESS2-3

Ocean waves move water

• to form tides

• long distances

• in a circular motion

Tags

NGSS.MS-PS4-2

Ocean surface currents are caused by

• wind

• gravity

• density

Tags

NGSS.MS-ESS2-6

Density currents move ocean water

• upward

• downward

• horizontally

Tags

NGSS.MS-ESS2-6

Which situation describes a point-source ocean pollutant?

• nitrates in runoff

• volcanic eruption

• oil spills from multiple ships

What causes coral bleaching?

• change in water temperature

• increase in carbon dioxide

• strong winds that blow for long times

Upwelling brings deep ____ ocean water to the surface.

• cold

• warm

Tags

NGSS.MS-ESS2-6

Surface waves have ____ wavelengths.

• long

• short

Spring tides occur when the moon is

• new or full

• 1/4 or 3/4

Tags

NGSS.MS-ESS1-1