Rocks and minerals 4th grade

What objects can be used to test for hardness?

• A fingernail

• A rubber band

• A piece of string

• A wooden stick

What are metamorphic rocks?

• Rocks that have been formed from volcanic activity.

• Rocks that have been changed by heat, pressure, or chemical processes.

• Rocks that are composed mainly of fossils.

• Rocks that are formed by the accumulation of sediments.

What is a mineral?

• A solid natural material that has a crystal form and its own set of properties.

• A liquid substance found in nature that can dissolve in water.

• An organic compound that is essential for plant growth.

• A synthetic material created in a laboratory.

What is the most effective way to identify minerals?

• Using a color test

• Using a hardness test

• Using a streak test

• Using a luster test

What is the Mohs scale?

• A scale used to measure the hardness of minerals.

• A scale used to measure the density of liquids.

• A scale used to classify the color of gemstones.

• A scale used to determine the temperature of metals.

What is hardness in terms of minerals?

• The ability of a mineral to resist being scratched.

• The ability of a mineral to conduct electricity.

• The ability of a mineral to reflect light.

• The ability of a mineral to dissolve in water.

What is cleavage in minerals?

• The tendency of a mineral to break along flat surfaces.

• The ability of a mineral to resist scratching.

• The color of a mineral in powdered form.

• The way a mineral reflects light.

Why is color not the best way to identify minerals?

• Color is always consistent across all minerals.

• Color can vary widely among minerals and may not be consistent.

• Color is the only property used to identify minerals.

• Color is the most reliable property for identifying minerals.

What is a fossil?

• The preserved remains or traces of ancient living organisms found in sedimentary rocks.

• A type of rock formed from volcanic activity.

• A living organism that has existed for millions of years.

• A mineral that is commonly found in igneous rocks.

What is sediment?

• Small pieces of rock, minerals, or organic material that can accumulate and form sedimentary rocks.

• A type of liquid found in oceans and rivers.

• A large mass of ice that moves slowly over land.

• A process of breaking down rocks into smaller pieces.