SCIENCE DAY 13 |Minerals, Crystals, and Gems

What are minerals?

• Liquids found deep inside the Earth.

• Naturally occurring solids with atoms organized in a pattern.

• Man-made materials used to build houses.

• Soft substances that can be easily shaped.

How are rocks related to minerals?

• Rocks are always made of only one type of mineral.

• Rocks are formed when minerals melt together.

• Rocks are solid collections of one or more minerals.

• Rocks are older than minerals.

How do crystals form?

• They are created by humans in factories.

• They form when minerals dissolve in liquids and then separate out in organized patterns.

• They are found only in outer space.

• They are made from melted rocks that cool very quickly.

What makes a crystal a "gemstone"?

• It is found in a special type of rock.

• It is very large and heavy.

• It is a rare or beautiful crystal that has been cut, shaped, and polished for use by people.

• It can be used to make pencils.

Which type of rock is granite, known for often containing quartz crystals?

• Sedimentary

• Metamorphic

• Igneous

• Organic

What type of sedimentary rock is formed from minerals dissolved in a liquid, often containing crystals like selenite or turquoise?

• Clastic sedimentary rock

• Chemical sedimentary rock

• Organic sedimentary rock

• Metamorphic sedimentary rock

What is a geode?

• A type of rock formed only from air bubbles.

• A rock with an empty space in the middle filled with crystals.

• A rock that only forms in sedimentary environments.

• A type of gemstone found in sandstone.

Why are metamorphic rocks less likely to contain large, noticeable crystals?

• They form from cooled lava, which prevents crystal growth.

• They are always found deep underground where crystals cannot form.

• The intense heat and pressure that form them break down or change crystals.

• They are made only of organic materials, not minerals.