Oceanography Earth Science

Deep Ocean currents are a result of

• Global Wind Patterns
• Earth's Rotation
• Density
• All of the above

The Coriolis Effect is caused by

• Earth rotating around the sun
• Earth rotating on its axis
• The tides
• Gravity

Warm ocean currents generally come from

• The North Pole
• The South Pole
• The Equator
• Both A and B

Two types of water currents are

• local and global
• sea and land
• surface and deep
• warm and cold

Why are surface currents at the surface of the ocean?

• colder temperature
• colder temperature & more salinty
• warmer temperature & less salinty
• less salinty

As you go deeper in the ocean, the water is colder and less salty.

• True
• False

Sunlight strikes this planet most directly at the_____________.

• mesosphere
• tundra
• equator
• south pole

Compared with surface currents, deep currents are

• colder and less dense.
• warmer and less dense.
• warmer and denser.
• colder and denser.

Which of the following causes water from deep currents to rise to the surface to replace warm currents?

• evaporation
• freezing of the surface of the water
• upwelling
• squeezing solids out of the ice down into the water below

The process of deep, nutrient-rich water moving upward to replace surface water that has blown farther offshore is called ___.

• downwelling
• upwelling
• rip current
• longshore current