Earth Materials Stemscopedia Lesson

All rocks are made up of __________

• cooled lava
• crystals
• minerals
• soils

Which of the following is true about minerals?

• They were formed in a factory and were once alive.
• They were formed in factory and have never been alive.
• They are formed in nature and were once alive.
• They are formed in nature and have never been alive.

James found a rock and made the following observations. It is greenish-blue. A paper clip scratches it. It is shiny. To make these observations, James was looking at the ______ of the rock.

• values
• properties
• minerals
• common uses

Which properties can be used to describe a rock or mineral?

• Color 
• Luster
• Hardness
• All of the above

What is luster?

• how soft or hard a rock or mineral is
• how dull or shiny a rock or mineral is
• how long or short a rock or mineral is
• how magnetic the rock or mineral is

The observation, “A finger nail scratches it” tells us about the rock’s _____________.

• color
• how it was formed
• hardness
• size

What are the three types of rocks?

• Igneous, metamorphic, sedimentary
• Igneous, metamorphic, sand
• Igneous, magma, sedimentary
• Lava, metamorphic, sedimentary

This type of rock was once melted, but it has cooled and hardened. What type of rock does this describe?

• Igneous
• Metamorphic
• Sedimentary
• None of the above

This type of rock was once another type of rock deep inside of the earth, but heat and pressure caused the minerals to change. What type of rock does this describe?

• Igneous
• Metamorphic
• Sedimentary
• None of the above

This type of rock is made up of pieces of sediment that have been pressed and cemented together. It may contain pieces of animal shells, skeletons, or remains of plants. What type of rock does this describe?

• Igneous
• Metamorphic
• Sedimentary
• None of the above