geology final exam

Front

What are the two main types of metamorphic rocks?

Back

Foliated and nonfoliated; foliated rocks have visible bands/layers and nonfoliated rocks do not.

Front

Which wave can travel through solids, liquids, and gases?

Back

P-Waves.

Front

What is relative dating in geology?

Back

Putting rock layers in order from first to last.

Front

What percent of carbon-14 would be left after 5730 years?

Back

50%.

Front

If you had 1000 atoms of parent isotope, how many parent atoms would you have after 2 half-lives?

Back

250 atoms.

Front

Define metamorphic rock.

Back

Rocks that have been changed from their original form due to heat, pressure, or chemically active fluids.

Front

What is the difference between intrusive and extrusive igneous rocks?

Back

Intrusive rocks are formed inside the Earth, while extrusive rocks are formed on the surface.

Front

What is the principle of superposition?

Back

In an undeformed sequence of sedimentary rocks, the oldest layers are at the bottom and the youngest are at the top.

Front

What is a half-life?

Back

The time required for half of the radioactive atoms in a sample to decay.

Front

What are seismic waves?

Back

Waves of energy that travel through the Earth, typically as a result of an earthquake.