Earth's Oceans

Front

Which water is densest?

Back

Cold salt water is the densest type of water.

Front

What percentage of the Earth is covered in liquid water?

Back

71% of the Earth's surface is covered in liquid water.

Front

What is the movement of water from the ocean to the atmosphere to the land and back to the ocean called?

Back

This process is called the water cycle.

Front

What is the warmest temperature zone in the ocean?

Back

The surface zone is the warmest and closest to the sun.

Front

What does salinity refer to?

Back

Salinity is the amount of salt in water.

Front

What is the primary source of Earth's ocean water?

Back

The primary source of Earth's ocean water is from volcanic eruptions and runoff from land.

Front

What is the role of ocean currents?

Back

Ocean currents help regulate the Earth's climate by distributing heat around the planet.

Front

What is the difference between fresh water and salt water?

Back

Fresh water has low salinity, while salt water contains a higher concentration of salt.

Front

What is the thermocline?

Back

The thermocline is a layer in the ocean where temperature changes rapidly with depth.

Front

What is the deep zone in the ocean?

Back

The deep zone is the coldest part of the ocean, found below the thermocline.