Geology Quiz

What type of machine is commonly used in the tumbling process to polish gemstones?

• Lathe

• Saw

• Vibratory tumbler

• Milling machine

Which abrasive material is often used in the tumbling process to polish gemstones?

• Sand

• Diamond powder

• Silicon carbide

• Aluminum oxide

What type of rock is formed from the cooling and solidification of magma or lava?

• Sedimentary

• Metamorphic

• Igneous

• Volcanic

What term describes the process by which minerals are deposited within the cracks and crevices of existing rocks, often filling in the void spaces?

• Metamorphism

• Sedimentation

• Vein deposition

• Precipitation

What is the hardest naturally occurring mineral on Earth?

• Quartz

• Diamond

• Feldspar

• Calcite

In which type of rock formation do minerals recrystallize and rearrange their atomic structure due to changes in temperature, pressure, or chemical environment?

• Sedimentary

• Volcanic

• Metamorphic

• Igneous

Which of the following is a metamorphic rock?

• Granite

• Sandstone

• Marble

• Basalt

What is the term for the process by which minerals are dissolved in water and then redeposited as sediment?

• Erosion

• Weathering

• Deposition

• Precipitation

What is the process called when gemstones are ground and polished to enhance their appearance and value?

• Lapidary

• Faceting

• Tumbling

• Carving

What is the term for the process by which mineral grains grow larger and more distinct in a rock as a result of heat and pressure over time?

• Crystallization

• Recrystallization

• Lithification

• Erosion