Earth Science

Siobhán Riordan

Study Guide #3

Tuesday, November 17, 2009

Webb

Study Guide

Inclusions- A rock inside a rock.

Angular Unconformity- the stuff below is at a different angle or position than the rest.

Correlation- a way of testing ages, same age of a rock in diff. places.

Index fossils- a bunch of diff stuff all in one area of time.

Radioactivity- aqll rocks are radioactive, some is just more dangerous. It breaks down stuff

Radiometric Dating- age of rocks

Nebular Hypothesis- all from one thing

Stomatolites- fossils

Trace Fossils- fossils from a curtain time.

Thermocline- the temperature change in water as you move up and down.

Continental Shelf- where the ground connects to the shore and moves out on a downward angle out to the ocean.

Deep sea fan- bottom of the ocean, sediment build up caused by the movement of water in and out, making a cone

Deep ocean trenches- the deepest part of the ocean, like a big ditch under water.

Guyots- volcanoes that the top used to be above water and because of chemical weathering, they now are at the surface level and flat topped.

Biogenous sediments- dead things make up this sediment, and it is the most common of all the sediments.

Coriollis effect-

Tides- the movement of the waters coming in and out, rising and falling at different times.

Diumnal tides-the diff tides, like some times we have high tide, and sometimes we have low tide.

Tidal currents- currents caused by the different movements of high tide and low tide.

Slack water- not high, or low tide. No real movement, no real current.

Wave height- how big is the wave

Fetch-

Surf- what water hits up on shore.

Wave refraction-

Wave cut cliffs- big and little cliffs made by waves breaking them down and other weathering

Sea stack-

Tombolo – kinda like a penensula

Breakwater-

Emergent coast- a piece of earth that used to be under water, but it now if showing.

Uniformitarianism- what...