Rocks And Minerals Assessment

1. What are the three main categories of rocks?

Settled, swirled, and pressed

Gneiss, schist, and coal

Hornblende, amphitite, galena

Sedimentary, metamorphic, and igneous

Compaction, extraction, and settlement

Categories help us classify and discuss rocks based on their characteristics. The other examples are either processes, do not apply to rocks, or are types of rocks and minerals.

Explanation

Categories help us classify and discuss rocks based on their characteristics. The other examples are either processes, do not apply to rocks, or are types of rocks and minerals.

2. Igneous rock is formed by

Magma that has cooled

Layers of particles cementing together

Rock changing from one form to another

Glaciers

Earthquakes

Igneous rock is formed by cooled magma. Some igneous rock has large crystals, other has very small crystals, all depending upon the cooling rate of the magma.

Explanation

Igneous rock is formed by cooled magma. Some igneous rock has large crystals, other has very small crystals, all depending upon the cooling rate of the magma.

3. Minerals are NOT formed in which way?

Cooling

Evaporation

By humans

Deep within the earth

Minerals are naturally formed substances. All of the other answers occur in nature.

Explanation

Minerals are naturally formed substances. All of the other answers occur in nature.

4. Which of the following is a type of rock?

Talc

Diamond

Granite

Tourmaline

Halite

Granite is a rock formed from feldspar, biotite, and quartz. The other examples are all minerals.

Explanation

Granite is a rock formed from feldspar, biotite, and quartz. The other examples are all minerals.

5. Sedimentary rock most likely would NOT be found

In a volcano

Under a lake

Where there are fossils

At the base of a mountain

At the mouth of a river

Sedmimentary rock is formed where layers of minerals are allowed to build up over time. In a volcano, that process doesn't happen because of extreme heat, or lack of layering of particles.

Explanation

Sedmimentary rock is formed where layers of minerals are allowed to build up over time. In a volcano, that process doesn't happen because of extreme heat, or lack of layering of particles.

6. Which of the following is a property of minerals? (check only one answer)

Quartz

Cleavage and fracture

Mining

Scratch test

Weight

Cleavage and fracture are the only properties of minerals listed here. Quartz is a type of mineral. Mining is how we extract minerals. The scratch test is done to test hardness, another characteristic property of minerals. Weight is merely a measure of the mineral.

Explanation

Cleavage and fracture are the only properties of minerals listed here. Quartz is a type of mineral. Mining is how we extract minerals. The scratch test is done to test hardness, another characteristic property of minerals. Weight is merely a measure of the mineral.