Oceans

What percent of the ocean's water is salt?

• 1%

• 3.5%

• 97%

• 24%

Which of the following contribute to the saltiness of the ocean?

• runoff from rivers and streams

• living organisms in the ocean

• precipitation

• factories dumping waste in the ocean

What is the huge, flat area of the ocean floor called?

• seamounts

• trenches

• abyssal plain

• continental shelf

The gradually sloping area at the edge of the ocean is called:

• abyssal plain

• continental slope

• continental shelf

• Galapagos Rift

What does salinity measure?

• ocean temperature

• amount of salt in water

• ratio of mass to volume

Temperature and salinity together are called the _______ circulation.

• hot-salt

• Coriolis Effect

• wind currents

• thermohaline

about _____% of the Earth's water can be found in our oceans.

• 25%

• 67%

• 72%

• 97%

What do you call an underwater mountain?

• trench
• abyssal plain
• seamount
• volcanic island

A volcanic mountain that rises above the surface of the water is called ____________

• trench

• island

• mid-ocean ridge

• seamount

What is a deep, underwater valley or canyon on the ocean floor?

• seamount
• trench
• continental rise
• continental slope