Oceans

Motion of the Ocean

100

A disturbance seen on the surface of water usually caused by wind

What is a wave?

200

How far into the ocean does sunlight reach?

Into the 2nd zone

300

What is the only source of light in the bottom 3 layers of the ocean?

Bioluminescent fish

400

These are caused by the gravitational pull of the moon.

What are tides?

500

List all 4 risks to the ocean.

1- Climate Change

2- Pollution

3- Overfishing

4- Oil and Gas drilling

Floor Features

100

When and how was it discovered the ocean floor was not flat?

Use of echo-sounders (sonar) during WWII

200

A deep narrow valley where two plates collide; considered the deepest part of the ocean

What is a trench?

300

Long mountain chains that run along the ocean floor; formed from volcanic activity

What are mid-ocean ridges?

400

Describe Seafloor spreading

Magma comes up through the mid-ocean ridges, cools and hardens, spreads away from the ridge, falls into a trench, melts, process restarts. 

500

How many zones of the ocean are there? List them all.

5 zones

1-Epipelagic

2-Bathypelagic

3-Mesopelagic

4-Abysalpelagic

5-Hadalpelagic

Ocean Ecosystem

100

Why are oceans important? 

1- Provide food and oxygen

2- Habitat for animals

200

This much of the surface of the Earth is covered by oceans.

What is: 70%?

300

This part of the ocean floor is the beach where people usually swim.

What is: the continental shelf?

(Epipelagic Zone)

400

4 things that help prevent pollution

What are: 1. tougher laws; 2. new scientific discoveries (such as new materials for packaging); 3. recycling; 4. cleanup patrols?

500

Colors or patterns on an animal that help keep them hidden from predators

What is protective adaptation?