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Types of rock
Properties of rocks
Weathering
100
Which type of rock is found in layers?
Sedimentary rock
100
What are two properties of rocks?
Texture and color
100
What is the process that causes rocks to crumble, crack, and break?
Weathering
200
What kind of rock is formed when sand, mud, or pebbles at the bottom of rivers, lakes, and oceans pile up?
Sedimentary rock
200
What are the building blocks of rocks?
Mineral
200
What is the name of the process in which water from melted snow or rain runs into the cracks of rocks, freezes, expands and breaks the rock open?
Ice wedging
300
What is made of bits of mud, sand, or small stones?
Sediment.
300
Why might size not be a good property to use to identify a rock?
Rocks are all different sizes depending on how they formed or broke apart from larger rocks- for example, a piece of granite can be any size.
300
How do plants break down rocks?
Plants grow in the cracks of rocks. The roots get larger and larger and break open the rock.
400
What type of rock is a "fire-made" rock formed from melted rock material?
Igneous rock
400
Why might shape not be a good property to use to identify rocks?
Rocks are all different shapes depending on how they formed or broke apart from larger rocks- for example, a piece of granite can be any shape.
400
How does wind break down rocks?
The sand in the wind hits against existing rock and breaks them down causing unique rock formations.
500
What is a type of rock that has changed form through squeezing and heating?
Metamorphic rock
500
What are some words that might describe a rock’s texture?
Bumpy, smooth, and rough