Earth's Surface
Classy Minerals
Classy Rocks
Dirt
LEAP Practice
100
Natural landforms on Earth's surface.
What are landforms?
100
Natural, nonliving solid crystals that make up rocks.
What are minerals?
100
The three main kinds of rock
What is igneous, sedimentary, and metamorphic rocks.
100
This is the layer of loose material that covers most of Earth's land.
What is soil?
100
A rock with uneven layers of minerals is probably which kind of rock?
What is sedimentary?
200
Rocks in Earth's crust are slowly broken into smaller pieces in this process.
What is weathering?
200
The way the surface mineral reflects light.
What is luster?
200
Rocks that form molten rock. These may form above or below earth's surface.
What is igneous?
200
A material in soil made up of decayed plants and animals.
What is humus?
200
Soil with a rough gritty texture has a lot of this.
What is sand?
300
Chemicals cause rocks to change into different materials and break down.
What is chemical weathering?
300
How easily the surface of a mineral can be scratched.
What is hardness?
300
Rocks that form when layers of sediments settle on top of one another and harden.
What is sedimentary?
300
This type of soil can be different colors, such as tan, white, green and black. It feels rough and gritty.
What is sand?
300
Which mineral properties could be tested without tools or other materials?
Color; luster; how a mineral feels, smells, tastes; possibly crystal shape, depending on the mineral and size of the crystal.
400
Rocks are broken down into smaller pieces of the same kind of rock.
What is physical weathering?
400
The color of the powder that a mineral leaves when it is scratched across a special plate.
What is streak?
400
Rocks that have changed as a result of heat and pressure.
What is metamorphic?
400
This type of soil is usually different shades of brown, depending on the materials that are in it. It feels smoother than sand particles.
What is silt?
400
The hardest mineral on the Mohs Scale for Hardness?
What is diamond?
500
The process of carrying away weathered bits of rock.
What is erosion?
500
Minerals that break long smooth, flat surfaces.
What is cleavage?
500
How can shale become schist?
Increasing heat and pressure can change shale into slate, slate phyllite, and phyllite into schist.
500
The colors of this type of soil include red, grey, and blue. When wet it feels smooth and sticky.
What is clay?
500
The softest mineral on the Mohs Scale for Hardness?
What is talc?
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