Minerals and Igneous Rock Quiz

Which of the following lists the correct requirements to be a mineral?

• Solid, Organic, Elements, Crystals, and Liquid
• Definite Chemical Composition, Crystalline Structure, Solid, Naturally Occurring and Inorganic
• Definite Chemical Composition, Liquid, Naturally Occurring, Organic, Unnaturally Occurring
• Naturally Occurring, Solid, Compounds, Inorganic, Elements

When a mineral is rubbed across a white plate leaving behind powder, what is this test called?

• Luster
• Density
• Streak
• Hardness

A mineral was put on a scale and has a mass of 10 grams. It was then placed in a graduated cylinder and found to have a volume of 5 mL's. What would the density of the mineral be?

• 10 grams
• 5 mL's
• 2 g/mL
• 20 g/mL

A mineral scratches a fingernail with a hardness of 2.5, it scratches a penny with a hardness of 3.5, it scratches glass with a hardness of 5.5, but does NOT scratch the steel plate with a hardness of 6.5. What could the hardness of this mineral be?

• 5
• 6
• 7
• 8

What is igneous rock?

• Rock that is formed from sediments that are compressed
• Rock that is formed from pre-existing rocks that undergo heat and pressure
• Rock that is formed when magma cools inside the Earth's crust or lava cools on the surface
• Naturally occurring, inorganic solids that have a crystalline structure and definite chemical composition

Select all the correct characteristics of igneous rocks

• Have a shiny or glassy surface
• crystals form from cooling magma or lava, time of cooling determines their size
• sediments form its layers
• no fossils found in them
• formed from previously formed rocks

Choose the 2 correct definitions of extrusive and intrusive igneous rocks

• Intrusive Igneous rocks are created below Earth's surface
• Intrusive Igneous rocks are created on or above Earth's surface
• Extrusive Igneous rocks are created on or above Earth's surface
• Extrusive Igneous rocks are created below Earth's surface

What are some uses of igneous rocks in the real world (choose all that apply)

• tools

• building materials

• jewelry

• gum

What is the Mohs scale used to measure?

• Density of minerals

• Color of minerals

• Hardness of minerals

• Luster of minerals

Which mineral property is tested by observing the color of its powder form?

• Luster

• Streak

• Hardness

• Cleavage