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100
The process of changing rocks over time.
What is a rock cycle?
100
The breaking down of Earth's surface into pieces.
What is weathering?
100
Located at the top layer of soil.
What is humus?
100
If you streak this over tile, the color will be gold.
What is gold?
100
Types of rocks?
What are sedimentary, igneous, and metamorphic rocks?
200
New landforms may develop if two of the plates that make up Earth's surface come together and push against each other.
What are mountains?
200
Water dissolving underground rock causes this.
What is a sinkhole?
200
This is the bottom layer of soil.
What is bedrock?
200
Rock formed from any other rock by heat and pressure.
What is a metamorphic rock
200
This rock is formed when melted rock cools and hardens.
How is igneous rock formed?
300
These processes contribute to the weathering and erosion that shape landforms.
What is plants, waves, and wind?
300
The remains of decayed plants and animals.
What is humus?
300
A test done done by rubbing a rock across a surface such as white tile.
What is a streak test?
300
A solid substance that occurs naturally in rocks or in the ground.
What is a mineral?
300
This rock is formed from sediment that has piled up in layers over time.
How is sedimentary rock formed?
400
The process of moving sediment to other places.
What is erosion?
400
This is called "fool's gold" and has a greenish black color when streaked.
What is pyrite?
400
A layer of soil- contains partly weathered rock.
What is horizon?
400
Texture is considered a ________________ of a substance.
What is a physical property?
400
Very little humus (remains of decayed plants and animals) causes the soil to be _____________ in color.
What is light?
500
The way a mineral reflects light is called this.
What is luster?
500
This substance makes up most of Earth's crust.
What is rock?
500
Made of one or many minerals.
What is a rock?
500
A lot of humus (decayed plant and animal remains) causes the soil to become __________ in color.
What is dark?
500
This process can change the texture of a stone from rough to smooth.
What is weathering?