Looking Questions About Mineral Composition and Igneous Rocks

Most of the common rock-forming minerals belong to a group called the what?

• silicates
• elements
• oxygen
• halites

What are the two most abundant elements in Earth’s crust.

• Iron and Calcium
• Sodium and Oxygen
• Potassium and Magnesium
• Oxygen and Silicon

The resistance of a mineral to being scratched

• hardness

• streak

• cleavage

• fracture

The way a mineral reflects light.

• luster

• streak

• cleavage

• fracture

The color of a mineral in its powdered form.

• streak

• luster

• gold

• brown

Minerals that break along smooth, flat surfaces.

• cleavage

• fracture

• streak

• luster

Minerals that break on rough, jagged, uneven surfaces.

• streak

• fracture

• splinter

• cleavage

What mineral is attracted to magnets?

• magnetite

• halite

• calcite

• talc

Which two minerals are commercial sources of iron?

• galena and graphite

• muscovite mica and biotite mica

• garnet and flourite

• hematite and magnetite

Tags

NGSS.MS-ESS3-1

Which element, found in both biotite mica and muscovite mica, makes up the greatest percent by volume of Earth's crust?

• silicon

• oxygen

• nirtogen

• potassium

Tags

NGSS.MS-ESS3-1

NGSS.MS-PS1-1