Geologic History of Earth

How rocks break apart to form sediments.

• abrasion

• deposition

• erosion

• weathering

Rocks formed by squeezing (compaction) and gluing (cementation) of sediments.

• cementation

• sedimentary rock

• sediments

• deposition

Small pieces of rock.

• deposition

• sediments

• sedimentary rock

• weathering

Tags

NGSS.MS-ESS2-3

When rocks are weathered by bumping into each other.

• erosion

• deposition

• abrasion

• weathering

Fossils that are the same type are the same age as the rocks they are in, no matter where you find them.

• principle of superposition

• law of fossil succession

• index fossil

• sedimentary rock

Tags

NGSS.MS-ESS1-4

Older rocks are on the bottom and younger rocks are on the top in a cross section.

• principle of superposition

• fossil

• index fossil

• sedimentary rock

Tags

NGSS.MS-ESS1-4

A low place where water can form a pool.

• erosion

• plateau

• basin

• canyon

Tags

NGSS.MS-ESS2-4

Matching the same rock layers from different places.

• cross section

• correlation

• compaction

• cementation

Tags

NGSS.MS-ESS2-3

When sediments are moved by nature.

• abrasion

• deposition

• erosion

• weathering

All 4.6 billion years of Earth's history.

• deposition

• geological time

• cross section

• correlation

Tags

NGSS.MS-ESS1-4