Oceans Review

Barrier Islands...

• protect the mainland

• are the water-filled spaces

• do NOT protect the mainland

• are man made and do not occur naturally.

Inlets...

• Protect the mainland from waves
• Are the water filled spaces between barrier islands
• Never change shape
• Always have the same amount of water inside

Beaches...

• Are always rocky

• Never change because of wind and water

• The area where the land meets the sea

• Are not effected by waves

Estuaries...

• Are the area where the land meets the sea

• Are not effected by waves

• Are not effected by tides

• Have a mixture of saltwater and freshwater

The abyssal plain...

• Is the deepest part of the ocean

• Is an underwater volcano

• Is deeper than any valley on Earth

• Is the flat, featureless area of the ocean floor

The continental shelf...

• Divides the ocean into two parts

• Is an underwater mountain range

• Becomes deeper as one moves further from the shore

• Is the steep slope that drops to the bottom of the ocean floor

Trenches...

• Cover about 54% of the Earth's surface
• Are steep-sided canyons underwater

• Begins where the continental slope flattens
• Have an opening from which lava flows

Pollution is...

• Occurs naturally and does not involve humans
• Anything material that harms the natural environment

• Is not preventable

Trenches are similar to...

• Plains
• Volcanos
• Mountains
• Canyons

The Abyssal Plain is similar to...

• Mountains
• Valleys
• Canyons
• Plains