Magma on the Move Booklet Quiz

Igneous rocks are any rocks that are cooled by magma and made of ___ crystals

Which of the following is not a type of crystal size

• Coarse

• Antique

• Fine

Coarse crystal size has slow cooling

• True

• False

Another term for a silicic mineral is a ___ mineral

Mafic minerals are usually found in ___ margins

True or False: A porphyritic rock is a rock that cools quickly with same sized crystals at a mid-ocean ridge

• True

• False

Groundmass/___ are small crystals

Anhedral is a crystal with the same crystals and shape

• False

• True

A sill is a ___ of igneous rock between and parallel of a sedimentary rock layer

True or False: Sills have 2 baked margins whilst lava flows only have 1 baked margin.

• True

• False