ES Unit 7 Test Review

Front

The dating process that puts events in the proper sequence is

Back

relative dating

Front

Using fossils to match up rocks in different areas is called

Back

correlation

Front

If you have 20g of a parent sample, how much will you have after 3 half lives?

Back

2.5g

Front

Earth and other planets grew in size as they collided with other space particles. This process is called

Back

accretion

Front

How many mass extinctions have occurred on Earth?

Back

5

Front

Which event happened first? Options: the oceans formed, the atmosphere formed, the ozone layer formed, the Cambrian explosion

Back

the atmosphere formed

Front

An unconformity is

Back

a gap in the rock record

Front

Radioactivity occurs when

Back

the nucleus of an atom breaks apart

Front

Which geologic time covers 88% of Earth's history? Options: Mesozoic, Cenozoic, Precambrian, Cambrian

Back

Precambrian

Front

Most fossils are found in what type of rock? Options: Igneous, Sedimentary, Metamorphic, Intrusive

Back

Sedimentary