Extrusive and Intrusive Rocks

A rock forms that has very small crystals, or no crystals at all. This type of rock is...

• extrusive igneous

• intrusive igneous

• extrusive sedimentary

• intrusive sedimentary

A rock forms that has very small crystals, or no crystals at all. This type of rock...

• formed inside the Earth

• formed outside on the Earth's surface

• can form anywhere

• cannot form

A rock forms that has very large crystals. This type of rock is...

• extrusive igneous

• intrusive igneous

• extrusive sedimentary

• intrusive sedimentary

A rock forms that has very large crystals. This type of rock...

• formed inside the Earth

• formed outside on the Earth's surface

• can form anywhere

• cannot form

Igneous rocks that form outside on the Earth's surface...

• will cool down faster and have smaller crystals

• will cool down more slowly and have smaller crystals

• will cool down faster and have larger crystals

• will cool down more slowly and have larger crystals

Igneous rocks that form inside the earth...

• will cool down faster and have smaller crystals

• will cool down more slowly and have smaller crystals

• will cool down faster and have larger crystals

• will cool down more slowly and have larger crystals

What is an extrusive igneous rock?

• a rock that forms outside on the Earth's surface with small or no crystals

• a rock that forms outside on the Earth's surface with large crystals

• a rock that forms inside the Earth with small or no crystals

• a rock that forms inside the Earth with large crystals

What is an intrusive igneous rock?

• a rock that forms outside on the Earth's surface with small or no crystals

• a rock that forms outside on the Earth's surface with large crystals

• a rock that forms inside the Earth with small or no crystals

• a rock that forms inside the Earth with large crystals

What is the difference between how sedimentary rocks form and igneous rocks form?

• sedimentary rocks form when magma or lava cools down and solidifies

• igneous rocks form when magma or lava cools down and solidifies

• igneous rocks form when sediment is deposited, compacted, and cemented

• there is no difference

Which will form more quickly: an intrusive rock or an extrusive rock?

• An intrusive rock because it forms inside the Earth where it is cooler and can solidify faster

• An intrusive rock because it forms inside the Earth where it is hotter and can solidify faster

• An extrusive rock because it forms outside on the Earth's surface where it is hotter and can solidify faster

• An extrusive rock because it forms outside on the Earth's surface where it is cooler and can solidify faster