Sea Level
Basin Topography
Tectonic Features
Origins of Oceans
Vocabulary
100

Always changing heights of the ocean at anytime

What is Local Sea Level?

100

This is the edge of the water at any given time.

What is the Shoreline?

100

Seamounts with flat tops.

What are guyots? 

100

The largest bodies of water separating the continents. 

What are Oceans? 

100

An underwater erosional feature often found in a continental slope.

What is a Submarine Canyon? 

200

The zero height used to measure elevation.

What is Mean Sea Level (MSL)?

200

The area where only the highest tides can reach.

What is a Berm?

200

Every Basin has one or more of these.

What is a Mid-Ocean Ridge?

200

Small to large bodies of saltwater, usually partially or completely surrounded by land.

What are Seas?

200

The relatively flat, deep ocean floor of an ocean basin.

What is an Abyssal Plain? 

300
Sea level is always changing and measured with this.

What are tide gauges?

300

The zone between the high and low-tide shorelines.

What is a Beachface?

300

Submerged volcanoes and hills.

What are seamounts?
300

Similar to seas, but usually smaller. 

What is a Gulf?

300

A long, curved string of volcanic islands.

What is an Island Arc

400
This changes over time and has been rising in recent decades.

What is Mean Sea Level (MSL)?

400

Where the waves first break and drop and sand that have moved from deeper water.

What is a Longshore Sandbar?

400

Important geologic features that form from the activities of animals. 

What are Coral Reefs?

400

Normally smaller than gulfs and seas.

What is a Bay?

400

A thick deposits of loose sediments that create a transition from the continental slope to the ocean floor.

What is a Continental Rise?

500

This is an imaginary sea level surface that undulates all over the Earth.

What is a Geoid?

500

The breaking action of wave that dig a *blank* on the shore side of the longshore bar.

What is a Longshore Trough?

500

The deepest point in any ocean was found in this trench.

What is the Challenger Deep?

500

Narrow ocean passages separating land masses.

What is a Strait? 

500

Deep, relatively narrow troughs in the ocean floor found in subduction zones adjacent to convergent plate boundaries. 

What is an Oceanic Trench?