Rocks & Fossils

Front

What are extrusive igneous rocks?

Back

Extrusive igneous rocks form as a result of lava outside of a volcano where the lava cools quickly, not allowing much time for crystals to form.

Front

What are igneous rocks?

Back

Igneous rocks are formed when lava or magma cool and harden.

Front

Where are fossils usually found?

Back

Fossils are usually found in rock.

Front

What does the Law of Superposition state?

Back

The Law of Superposition states that each rock layer is older than the one above it.

Front

What are intrusive igneous rocks?

Back

Intrusive igneous rocks form as a result of magma inside a volcano cooling slowly, causing large crystals to form.

Front

What is the difference between extrusive and intrusive igneous rocks?

Back

Extrusive igneous rocks cool quickly on the surface, while intrusive igneous rocks cool slowly beneath the surface.

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What are sedimentary rocks?

Back

Sedimentary rocks are formed from the accumulation and compaction of mineral and organic particles.

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of a once-living organism.

Front

How do fossils form?

Back

Fossils form when organisms are buried by sediment, which hardens into rock over time.

Front

What is the rock cycle?

Back

The rock cycle is the continuous process of rock formation, breakdown, and reformation.