Minerals and Rocks 2018

Terry rubs together a soft mineral and a hard mineral. What will most likely happen when the minerals are rubbed against each other?

• The softer mineral will scratch the harder mineral.

• The minerals will both leave scratches on the other.

• The harder mineral will scratch the softer mineral.

• The minerals will not leave any scratches on each other.

Tino finds an object on the ground. He wants to classify if correctly. Which of the following is true about the object?

• It is likely a mineral because it has a rough texture.

• It is likely a mineral because it has a pattern.

• It is likely a rock because it is light in color.

• It is likely a rock because if has fossils.

A diamond is a 10 on the Mohs hardness scale. What will happen when a diamond is scraped against a mineral with a lower hardness rating?

• The diamond will chip.

• The diamond will increase in hardness.

• The diamond will scratch the other mineral.

• The diamond will lose hardness to the other mineral.

Brick, steel, and glass all come from substances found in Earth's crust, but they are NOT called minerals because they are

• not made by nature.

• made of rock.

• too hard and heavy.

• useful to humans.

A scientist wants to find out what type of mineral she has. What is the best way for her to find out?

• She could look at the luster, hardness, and streak.

• She could look at the weight, hardness, and color.

• She could look at the color, weight, and size.

• She could look at the shape, size, and hardness.

Which of the following best explains a hardness scale?

• a scale that tests the hardness of a mineral by scratching other materials.

• a scale that tests the hardness of a rock by scratching other minerals.

• a scale that tests the hardness of a mineral by being rubbed on other minerals.

• a scale that tests the hardness of a rock by being rubbed on other materials.

The picture shows a sample of rock. This rock would be classified as metamorphic because it shows

• a mixture of minerals

• an organic composition

• crystals from precipitation

• distorted banding

The slate tabletops in the school's science lab are made from rocks that were under very high temperature and pressure. In which category of rock can slate be placed?

• igneous

• metamorphic

• sedimentary

• volcanic

The diagram shows a simple model of an event that is part of the rock cycle. Which type of event is most likely occurring in the diagram?

• the compacting of layers by high pressure and heat that leads to metamorphic rock.

• the cementing of layers of sediment particles that leads to sedimentary rock

• the melting of sediment particles that leads to igneous rock

• the hardening of liquid magma that leads to igneous rock

Lorna decided to study rocks while on vacation in Hawaii. Which type is she most likely to find in Hawaii?

• She will find mainly igneous rock, because Hawaii has and was formed by active volcanoes.

• She will find sedimentary rock, because Hawaii has high winds and ocean currents.

• She will find mainly sedimentary rock, because Hawaii has a large amount of organic plant matter.

• She will find mainly metamorphic rock, because Hawaii always has high temperatures.