Rock Layers (Geologic Time)

Front

What do paleontologists study?

Back

Fossils

Front

What type of dating do scientists use to determine the exact age of something?

Back

Absolute dating

Front

How many years does the geologic time scale represent in Earth's history?

Back

4.6 billion years

Front

What type of rock is formed from sediment compacted by the weight of layers above?

Back

Sedimentary rock

Front

What is the process called when sediment is moved around by wind or water?

Back

Erosion

Front

What is the term for the layers of rock that are formed over time?

Back

Rock layers

Front

What is the difference between relative dating and absolute dating?

Back

Relative dating determines the order of events, while absolute dating provides a specific age.

Front

What are fossils?

Back

Remains or traces of ancient organisms preserved in rock.

Front

What is sedimentary rock primarily made of?

Back

Particles of sand, silt, clay, and organic material.

Front

What is the significance of the geologic time scale?

Back

It helps scientists understand Earth's history and the timing of events.