Terms
Rocks1
Rocks2
Rocks3
Rocks4
100

formed from the weathered products of pre-existing rock

What is sedimentary rock?

100
Rocks formed from cooled and hardened magma or lava.
What are igneous rocks?
100
Particles of minerals, rock fragments, shells, leaves, bones, and other remains of once-living things.
What are sediments?
100
The process of change in the structure and constitution of existing rocks change due to heat, pressure, and/or chemical reactions.
What are metamorphic rocks?
100
Igneous rocks formed when lava cools on the Earth's surface.
What are extrusive rocks?
200

stress that is applied uniformly in all directions

what is confining pressure?

200
Rocks formed from sediments that have been compacted and cemented together.
What are sedimentary rocks?
200

Sedimentary rock composed of clay-sized particles in flat layers.

What is shale?

200
The process of change in the structure and constitution of a rock.
What is metamorphism?
200

the hard parts of microscopic organisms on the sea floor

What is chalk formed from?

300

group of igneous rocks containing dark silicates and plagioclase feldspar

what is mafic composition?

300
A hard substance composed of one or more minerals.
What is a rock?
300

A sedimentary rock composed of rounded, pebble-sized rock fragments.

What is a conglomerate rock?

300
A rock structure without visible layers or bands.
What is nonfoliated structure?
300

from the compaction of old swamps and bogs

How does coal form?
400

large crystals embedded in a matrix of much smaller crystals

What is Porphyritic texture?

400

An extrusive igneous rock that is denser than granite.

What is basalt?

400

Light-colored, lightweight igneous rocks that are rich in silicon

What are felsic rocks?

400
The squeezing of air and water out of sediments and the pressing of the fragments together.
What is compaction?
400

where most sediments end up

the ocean floor

500

means "conversion into rock"

What is lithification?

500
A type of conglomerate rock composed of sharp-cornered fragments.
What is Breccia?
500
The process that transforms layers of rocky fragments into sedimentary rock or a bed of sand into sandstone.
What is lithification?
500
A rock structure with visible layers or bands aligned in planes.
What is foliated structure?
500

Why does magma rise to earth's surface?

Because it is less dense than the surrounding material

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