West Middle Science 8 -Chapter 7 Quiz - Oceans

Surface ocean currents are caused by differences in temperature and salinity in the ocean.

• True
• False

The distance between two wave crests or two wave troughs is called the_________

• trough

• crest

• wavelength

Marine is a term that describes things that are part of or from the ocean.

• True
• False

Beach sand is made of large, rounded grains of quartz, and sulfur.

• quartz and sulfur

• quartz and feldspar

• sulfur and quartz

What is a barrier that is built to control ocean currents near a coast?

• tsunami

• jetty

• fetch

A wind-driven current that moves at the ocean’s surface for long distances is known as a

• Surface ocean current.
• Mid-ocean ridges
• Crest
• Trough
• Deep-ocean trenches

A ____________________ is rotating circular system of ocean currents caused by the rotation of the Earth.

• Gyre
• Mid-ocean ridges
• Crest
• Trough
• Deep-ocean trenches

The highest point of a wave is called the _________________________________________.

• Crest
• Mid-ocean ridges
• Trough
• Deep-ocean trenches
• Longshore drift

The low point of a wave is called a ______________________________________________.

• Trough
• Mid-ocean ridges
• Crest
• Deep-ocean trenches
• Longshore drift

The flow of sand along a coastline is called _______________________________________.

• Longshore drift
• Mid-ocean ridges
• Crest
• Trough
• Deep-ocean trenches