Level 47
Level 48

Rock Types

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Deposited rocks, mud, or sand that builds up in layers.
Bind or fuse particles (sand, mud, bits and pieces of rock) together in sedimentary rock. Crystals form a sort of glue that sticks or cements pieces of rock together in a sedimentary rock.
When sediments are compacted and cemented together, allowing mineral-rich water evaporate. This leaves behind minerals that harden, creating a solid rock.
When areas of rock move slowly upwards (to the Earth's surface), pushed by pressure of the rocks forming underneath.
Material made from living things OR plants and animals that were once alive.
The way a surface looks or feels (example: rough or smooth).
Mohs' hardness scale
A scale used to test the hardness of a mineral, 1 being the softest (talc) and 10 being the hardest (diamond). To test hardness, scientists see what surface the material can scratch or get scrat…
-Naturally occurring, inorganic solid mixture of one or more minerals.
a natural resource that is not a plant or an animal
Igneous Rock
A type of rock that forms from the cooling of molten rock at or below the surface.
intrusive rock
Formed within (inside) Earth's surface (remember - "in" for "inside" Earth's surface).
Metamorphic Rock
A type of rock that forms from an existing rock that is changed by heat and pressure
When different elements join together and become as one.
non-foliated rock
Metamorphic rock formed from equal pressure.
Sedimentary Rock
a type of rock formed from layers of sediment
Air Pressure
This is the measure of the force with which air molecules push on a surface. It is strongest at the Earth's surface because more air is above you. As you move farther away from…
organic rock
Sedimentary rock formed from the remains of animals and plants that were once alive.
breaking down rocks
The physical improvement resource
Level 49