Unit 7 Key Terms

What is a deep current?

• A streamlike movement of ocean water that occurs far below the surface.

• A surface-level flow of freshwater in rivers.

• A type of ocean wave caused by wind.

• A current that only occurs in shallow waters.

What is a gyre?

• A type of fish found in the ocean.

• A large system of circulating ocean currents, typically driven by wind.

• A method of fishing used in deep waters.

• A phenomenon related to ocean temperature variations.

What is the main factor that drives ocean currents?

• Temperature differences in the water

• Wind

• Salinity levels in the ocean

• Tidal forces

What is the relationship between temperature and density in ocean water?

• Colder water is denser than warmer water, affecting ocean currents.

• Warmer water is denser than colder water, leading to stronger currents.

• Temperature has no effect on the density of ocean water.

• Density is constant regardless of temperature changes.

What does temperature measure?

• A measure of the speed of molecules in a substance.

• A measure of how hot or cold something is.

• A measure of the pressure exerted by a gas.

• A measure of the density of a material.

What is an ocean current?

• A type of fish found in the ocean.

• A movement of ocean water that follows a regular pattern.

• A wave that occurs during a storm.

• A method of fishing in deep waters.

What are tides?

• The regular rise and fall of sea levels caused by the gravitational pull of the moon and sun.

• The movement of water caused by wind and weather patterns.

• The seasonal changes in water temperature and salinity.

• The flow of water in rivers and streams during heavy rainfall.

How does energy travel through space?

• As sound waves

• As electromagnetic waves

• As gravitational waves

• As thermal radiation

What is the Coriolis effect?

• The deflection of moving objects due to the Earth's rotation.

• A phenomenon that causes tides to rise and fall.

• The process of air moving from high to low pressure areas.

• The change in temperature of ocean currents.

What are surface currents?

• Ocean currents that occur at the bottom of the ocean, influenced by temperature changes.

• Ocean currents that occur at the surface of the ocean, influenced by wind.

• Ocean currents that are found only in polar regions, influenced by ice melting.

• Ocean currents that are caused by underwater earthquakes and volcanic activity.