Front

The breaking down of rocks into smaller pieces is called _________.

Back

weathering

Front

Paleontologists study ______.

Back

fossils

Front

When sediment is moved around by wind or water it is called _________.

Back

erosion

Front

The geologic time scale represents Earth's ________ year history.

Back

4.6 billion

Front

Rock made from sediment compacted by the weight of sediment layers above are called __________ rock.

Back

sedimentary

Front

The process by which rocks are formed, changed, and broken down is known as the ________ cycle.

Back

rock cycle

Front

The solid remains of ancient organisms are called _________.

Back

fossils

Front

The movement of Earth's plates is known as _________.

Back

plate tectonics

Front

The layer of Earth that is made up of solid rock is called the _________.

Back

lithosphere

Front

The process of transporting sediment from one location to another is called _________.

Back

erosion