3 Types Of Rocks (Igneous) Question Preview (ID: 60846)


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How can I tell if a rock has been formed extrusively?
a) It can have no crystals or have holes in it
b) It can have large crystals
c) It could have layers
d) It could be green

How can I tell if a rocks has been formed intrusively?
a) It can have large crystals
b) It can have no crystals
c) It can have holes
d) It could have layers

What is magma?
a) Molten rock under the Earth's surface
b) Molten rock on the Earth's surface
c) Rocks that have layers
d) Rocks that show bits and pieces of materials.

What is an example of extrusively formed rock?
a) Obsidian
b) Granite
c) Coal
d) Slate

What is lava?
a) Molten rock on the Earth's surface
b) Molten rock under the Earth's surface
c) Rocks that have layers
d) Rocks that show bits and pieces of materials.

What is an example of Intrusively formed rocks?
a) Granite
b) Obsidian
c) Coal
d) Shale

How do Igneous rocks form extrusively?
a) On the Earth's surface from cooled lava
b) Inside the Earth from cooled magma
c) From bits and pieces of materials cemented together
d) With layers from minerals

How do Igneous rocks form intrusively?
a) Inside the Earth from cooled magma
b) On the Earth's surface from cooled lava
c) With layers from minerals
d) From bits and pieces of materials cemented together

When an Igneous rock has high silica, what will it look like?
a) light in color
b) dark in color
c) big crystals
d) Little or no crystals

If Igneous rocks have low silica, what will it look like?
a) It will be dark in color
b) It will be light in color
c) Big crystals
d) Small to no crystals

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