Rock Cycle and Fossils

Igneous rock that cools slowly have ______ crystals

• small

• large

• purple

• green

Why don't jellyfish leave fossils

• They are made up of mostly soft tissue

• They are mostly shells

• They are eaten before they turn to fossils

Organic material has high amounts of

• Carbon

• sand

• Nitrogen

• Lead

Compaction is important in forming what 2 types of rocks

• Metamorphic

• Igneous

• Sedimentary

• Gold

What processes create sedimentary rocks (and fossils)

• Heat

• Compaction

• Cementation

• Cooling

Tags

NGSS.MS-LS4-1

What changes a metamorphic rock into a sedimentary rock

• Cementation

• Pressure (Compaction)

• Cooling

• Melting

Characteristics of index fossils

• Short lived

• Geographically Widespread

• Round

• Old

During which stage of the rock cycle are fossils formed?

• When the rock melts

• When sediments turn into a sedimentary rock

• When the magma cools

• When the erosion is occurring

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS4-1

What can you learn from the law of superposition?

• The age of a fossil compared compared to other fossils

• The type of organism

• The way the organism died

• What type of rock is present

Tags

NGSS.MS-ESS1-4

Preserved fossils may be found in

• Amber

• Ice

• Tar

• Glass