Oceans Review

Which number represents an ocean trench?

• 6

• 2

• 10

• 9

Which section represents the continental slope?

• section 1

• section 2

• section 3

• section 4

Two children are swimming and jumping in the waves at the beach. On which part of the ocean are they standing?

• continental rise

• abyssal plain

• continental shelf

• mountain range

The amount of salt found in water describes the water's —

• salinity

• brackishness

• freshness

• cleanliness

What is the deepest part of the ocean?

• continental slope

• abyssal plain

• continental rise

• ocean trench

Which area of the ocean will have the least amount of living organisms?

• The darkest part of the ocean

• The place where the largest animals live

• The area where most humans have access to fish

• The part of the ocean with the most light

Which of the following is NOT a cause of ocean currents?

• Differences in salinity

• Water and air pollution

• Wind directions

• Temperature changes

How does the depth of the ocean affect how much light that part of the ocean receives?

• There is no connection between depth and light in the ocean.

• The ocean gets lighter as it gets deeper.

• The more shallow the ocean, the darker it appears.

• The deeper the ocean is, the darker it gets.

The ultimate source of energy for all food chains is

• plants

• animals

• consumers

• the sun

How does phytoplankton photosynthesis benefit land-based organisms?

• Phytoplankton produces more than half the oxygen in the atmosphere.

• Phytoplankton photosynthesis produces powerful and deadly toxins.