Rocks and Minerals Review

Which characteristic of a mineral is determined by rubbing the mineral across an unglazed porcelain plate and sometimes leaves a colored powdered streak on the plate's surface?

• Fracture

• Color

• Hardness

• Streak

Which three (3) of the following are required to be classified as a mineral?

• Be inorganic

• Have a specific chemical composition

• Have a crystalline structure

• Be created by a living organism

• Have randomly arranged atoms

The color of a mineral, such as fluorite, changes due to _________.

• differences in element composition

• differences in hardness

• differences in the crystal structure

• differences in the density

Tags

NGSS.MS-PS1-1

What is the hardness of an unknown mineral that scratches glass, but will not scratch quartz?

• 5.0

• 7.5

• 6.0

• 8.0

Based on the Igneous Rock Identification chart, which mineral is most abundant at low temperatures (700-900°C)?

In the Igneous Rock Identification chart, the rock name associated with a coarse-grained texture and a mafic composition is _______.

• The rock name is Gabbro.

• The rock name is Granite.

• The rock name is Basalt.

• The rock name is Rhyolite.

According to the Igneous Rock Identification chart, which rock is formed at the highest temperature range (1100-1200°C)?

Which of the following igneous rocks are considered extrusive igneous rocks? Select all that apply.

• Rhyolite

• Granite

• Andesite

• Basalt

• Diorite

What minerals are most common in a sample of granite? Select all that apply.

• Quartz

• Orthoclase

• Pyroxene

• Olivine

• Gold

Steve Rogers found an igneous rock while walking around his house. The rock was fine grained, dark in color, and had many holes in it. What kind of rock did Steve Rogers find?

• Gabbro

• Rhyolite

• Granite

• Basalt