Ocean Unit Test

A scientist wanted to send a camera to explore the deepest parts of the

ocean. Which area of the ocean should the camera be sent?

• Ocean trench

• Continental shelf

• Continental slope

• Abyssal plain

• Continental rise

Lobster pots are used by fishermen to catch lobsters in shallow water. In which area

of the ocean would commercial fishermen most likely place their lobster pots?

• On the bottom of an ocean trench

• On top of a mid-ocean ridge

• On the continental slope

• On the continental shelf

If all the water in the ocean were removed, what would the land below it look like?

• Mostly small hills and grasslands

• Mostly flat like a desert

• Mostly mountains and valleys

• Similar to land on the continents

Ocean water is —

• salt water

• brackish water

• fresh water

• spring water

High and low tides on the coast are caused mostly by —

• underwater earthquakes

• the gravity from the moon

• storms over the ocean

• the tilt of Earth

The basic motions of the ocean are —

• waves

• tides

• hurricanes

• currents

• trade winds

Submarines have explored many parts of the ocean. As submarines descend,

scientists observe that there is an increase in the —

• water temperature

• types of ocean organisms

• amount of light

• water pressure

The amount of salt found in water describes the water's —

• brackishness

• freshness

• salinity

• cleanliness

What causes the waves in the ocean?

• Sand

• Wind

• Sun

• Animals

Which of the following is NOT a cause of ocean currents?

• Water and air pollution

• Wind directions

• Differences in salinity

• Temperature changes