Oceans

What is the Ocean Trench?

• A shallow area of the ocean where sunlight penetrates

• A deep, narrow valley in the ocean floor, often the deepest parts of the ocean.

• A region of the ocean with abundant marine life

• A type of ocean current that circulates warm water

What is the Continental Shelf?

• The underwater land that extends from the coast of a continent, where sunlight reaches and supports a lot of marine life.

• A deep ocean trench that is home to unique species of fish.

• The area of land above sea level that is closest to the ocean.

• A type of coral reef found near the shore.

How does evaporation affect ocean salinity?

• It decreases the salinity by adding fresh water.

• It has no effect on salinity.

• It increases the salinity by leaving salt behind when water evaporates.

• It reduces salinity by mixing with rainwater.

What is the Continental Slope?

• A flat area of the ocean floor

• The steep slope that leads from the edge of the continental shelf down to the ocean floor

• A region where ocean currents are weak

• The area where the ocean meets the land

What is the Abyssal Plain?

• A flat, deep part of the ocean floor that is very dark and has very little life.

• A shallow area of the ocean with abundant marine life.

• A region of the ocean where sunlight penetrates and supports diverse ecosystems.

• A volcanic region on the ocean floor with frequent eruptions.

What is buoyancy?

• Buoyancy is the ability of an object to float in water or air, depending on its density compared to the fluid.

• Buoyancy is the force that pulls objects downwards in a fluid.

• Buoyancy is the measure of how heavy an object is in a vacuum.

• Buoyancy is the resistance of an object to being submerged in a fluid.

What are one-celled organisms?

• Large animals that live in water.

• Organisms made up of multiple cells, like plants.

• Tiny living things made up of just one cell, like bacteria and some types of plankton.

• Fungi that grow in soil and decay organic matter.

What is a predator?

• An animal that hunts and eats other animals for food.

• A type of herbivore that feeds on plants.

• A scavenger that feeds on dead animals.

• A domesticated animal kept for companionship.

What is an Ocean Food Chain?

• A diagram showing the physical features of the ocean.

• A representation of how energy and nutrients flow from one organism to another in the ocean, starting from small creatures to larger predators.

• A list of all the fish species found in the ocean.

• A method of measuring the depth of the ocean.

What is a food web?

• A simple chain of organisms that eat one another.

• A complex network of food chains that shows how different organisms in an ecosystem are connected.

• A diagram that only shows herbivores in an ecosystem.

• A list of all the plants in a specific area.