4th grade- rock and rock cycle

This is a piece of Granite; is it Felsic or Mafic?

• Felsic

• Mafic

Answer explanation

Felsic

_____________takes longer to cool, giving mineral crystals more time to grow

• fine grained

• coarse grained

________ cools quickly with little to no crystals

• Fine grained

• Coarse Grained

This rock could be best described as?

• Fine grained

• Coarse grained

• grey

• lava

Explain the difference between extrusive and intrusive igneous rock formation. Please click on the two that are correct.

• Intrusive rock is formed when magma pushes into surrounding rock below the Earth’s surface

• Extrusive rocks form when magma erupts onto the Earth’s surface (lava),  cools quickly with very small or no crystals formed

• Extrusive rock is formed when magma pushes into surrounding rock below the Earth’s surface

• Intrusive rocks form when magma erupts onto the Earth’s surface (lava),  cools quickly with very small or no crystals formed

Rocks that are: dark colored rocks that are rich in calcium, iron, and magnesium, poor in silicon are:

• Mafic

• Felsic

• Minerals

• Fossils

How are Rocks classified? (click all that apply)

• How they are formed

• Their composition

• Texture

• What color they are

Igneous rock begins as:

• Volcano

• Fossils

• Magma

• Lava

Light colored rocks that are rich in elements such as aluminum, potassium, silicon, and sodium

• Felsic

• Mafic

• Fossil

• Mineral

Click all that describe this rock:

• Coarse grained

• Mafic

• intrusive

• extrusive

• Felsic