Earth and Science

Earth's crust is composed of which of the following

• soil
• mineral
• rock
• all of these

A naturally formed, solid mixed with organic material and minerals is known as a

• mineral
• rock
• crystal
• diamond

A naturally formed, inorganic material with a crystalline structure is known as a

• rock
• crystal
• diamond
• mineral

Which of the following is a property to classify minerals?

• hardness 
• luster
• streak
• all of these

Which type of rock is created when magma cools and solidifies?

• igneous
• metamorphic
• crystal
• sedimentary

Which type of rock is created when there are changes in heat and pressure?

• igneous
• crystal
• metamorphic
• sedimentary

When grains and materials are compacted and cemented together, they form which type of rock?

• igneous
• sedimentary
• metamorphic
• crystal

Which of the following is NOT a true statement about fossils?

• Fossils take many years to form
• Fossils are only formed in rock and leaf structures
• Fossils help scientists make inferences about the age of the earth
• Fossils can be formed in ice, mud, tar, and other liquids

Fossils are usually found in which type of rock?

• sedimentary
• metamorphic
• crystal
• igenous

Which of the following processes do geologists use to determine geologic time?

• Volcanic eruptions
• Shifts in Earth's crust
• Erosion
• All of these