Types of Rocks
Sedimentary
Metamorphic
Igneous
100
What are the three types of rocks?
Sedimentary, Metamorphic, Igneous
100
How are sedimentary rocks formed?
It settles into layers
100
How are metamorphic rocks formed?
Changed by immense temperature and pressure
100
How are igneous rocks formed?
They are formed when magma cools deep under the Earth's surface
200
What type of rock is pumice?
Igneous
200
How do sediments travel?
Wind and Water carry them
200
Name a type of metamorphic rock
Marble, quartzite, anthracite, slate, gneiss, schist
200
Give an example of an igneous rock
Pumice, Obsidian, Basalt, Granite, Tuff, Diorite, Gabbro, Andesite
300
What is the oldest type of rock?
Igneous
300
What are sediments?
Small pieces of other rocks
300
Rocks that are ______ and ________ over millions of years can turn into metamorphic rock
Heated and Squeezed
300
Igneous rocks can also be called ________
Fire rocks
400
What is the name of the process of rocks changing from one type to another?
The Rock Cycle
400
How much of the Earth's surface is made up of sedimentary rock?
3/4 three-fourths
400
What is the name of the process caused by wind and rain that wears down the top layer of rocks and can help bring metamorphic rocks to the surface?
Erosion
400
Igneous rock used to be ______, before it cooled and hardened
Melted
500
What types of rocks make up about 1/4 of the Earth's surface?
Igneous and Metamorphic
500
Give two examples of sedimentary rocks
Limestone, sandstone, chalk, coal, flint
500
The collisions and frictions of the Earth's _______ _______ can cause the formation of metamorphic rocks
Tectonic plates
500
Why does pumice float?
It is full of air bubbles, which makes it less dense than the water. If something is less dense than water, it floats.
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