Rocks and Minerals

What tool do you use to test a mineral's hardness?

• water

• clay tiles

• nail

• penlight

What is the softest mineral?

• feldspar

• muscovite

• talc

• diamond

What is the hardest mineral?

• graphite

• fluorite

• diamond

• gypsum

This type of rock can be changed by heat, pressure, and water.

• Igneous

• Metamorphic

• Sedimentary

This type of rock is formed when melted rock cools.

• Igneous

• Metamorphic

• Sedimentary

The hardness of a mineral is measured by a scale known as...

• Luster scale

• Hardness scale

• Moh's scale

• Transmissivity scale

How do sedimentary rock form?

• by pressure of layers of sediment
• by heat from volcanos
• by heat and pressure deep underground

What are the three types of rocks?

• lava, metamorphic, and sedimentary
• igneous, sedimentary, and mineral
• metamorphic, lava, and igneous
• igneous, sedimentary, and metamorphic

What was the purpose of the scratch test?

• to find if the rock contained calcite
• to find the hardness of the mineral 
• to find the color

What two properties are most helpful for identifying minerals?

• luster and streak

• color and size

• shape and hardness

• color and hardness