Science Ch 1 Test

Rock formed from magma or volcanic lava is called _____

• conglomerate

• igneous

• metamorphic

• sedimentary

A type of metamorphic rock.

• coal

• limestone

• obsidian

• slate

Gemstones that are beautiful and rare are called precious stones.

• True

• False

The way that a mineral reflects light is called its ________

• luster

• hardness

• rock

• gemstone

Rock that forms when layers of sediment and organic material harden is called ______.

• conglomerate

• igneous

• metamorphic

• sedimentary

The ability of a mineral to resist scratching is called ______

• luster

• hardness

• rock

• gemstone

A rock-like substance that forms from decayed plant matter.

• coal

• limestone

• obsidian

• soil

The hot melted rock that makes up the mantle of the earth is called lava.

• True

• False

Rock formed by heat and pressure deep below the earth's crust is called ______.

• conglomerate

• igneous

• metamorphic

• sedimentary

The color of the mark made when a mineral sample is rubbed on a harder surface is called the _____.

• fracture

• streak

• color

• cleavage