rocks made from layers of sand, mud, shells, or tiny pieces of other rocks that get pressed together

rocks that were once another type of rock but changed because of strong heat and pressure

rocks that form from melted lava or magma that cools and harden

when rocks are broken down into smaller pieces by wind, water, ice, or other living things

when wind, water, or ice move broken rock and soil from one place to another

when bits of sand, mud, or other sediments get pressed tightly together by weight on top of them

when water mixes together with particles and crystalize, filling gaps and acting like glue forming new rocks and holds them together

the way rocks change from one kind to another over a long time; Rocks can melt, get squished, break apart, or cool down, and that’s how they become new types of rocks

when rocks, sand, or soil are dropped in a new place by wind, water, or ice

hot, melted rock that has come out of a volcano and onto the surface

hot, melted rock that is under the ground

In layers of rocks, the bottom layers are the oldest and the top layers are the youngest.

If a rock layer or fault cuts across other layers, it is younger than the layers it cuts through.

If a rock has pieces of another rock inside it, the pieces are older than the rock that surrounds them.

Relative dating tells us which rock or fossil is older or younger compared to others, but not the exact age.

Absolute dating tells us the exact age of a rock or fossil in years.

A volcanic dike is a wall of magma that pushed up through cracks in rocks and then hardened.

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The Rock Cycle

Term	Definition
sedimentary rock	rocks made from layers of sand, mud, shells, or tiny pieces of other rocks that get pressed together
metamorphic rock	rocks that were once another type of rock but changed because of strong heat and pressure
igneous rock	rocks that form from melted lava or magma that cools and harden
weathering	when rocks are broken down into smaller pieces by wind, water, ice, or other living things
erosion	when wind, water, or ice move broken rock and soil from one place to another
compaction	when bits of sand, mud, or other sediments get pressed tightly together by weight on top of them
cementation	when water mixes together with particles and crystalize, filling gaps and acting like glue forming new rocks and holds them together
The Rock Cycle	the way rocks change from one kind to another over a long time; Rocks can melt, get squished, break apart, or cool down, and that’s how they become new types of rocks
deposition	when rocks, sand, or soil are dropped in a new place by wind, water, or ice
lava	hot, melted rock that has come out of a volcano and onto the surface
magma	hot, melted rock that is under the ground
Law of Superposition	In layers of rocks, the bottom layers are the oldest and the top layers are the youngest.
Law of Crosscutting	If a rock layer or fault cuts across other layers, it is younger than the layers it cuts through.
Law of Inclusions	If a rock has pieces of another rock inside it, the pieces are older than the rock that surrounds them.
Relative Dating	Relative dating tells us which rock or fossil is older or younger compared to others, but not the exact age.
Absolute Dating	Absolute dating tells us the exact age of a rock or fossil in years.
Volcanic Dyke	A volcanic dike is a wall of magma that pushed up through cracks in rocks and then hardened.

Created by: user-1981613

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