Natural Resources Unit Test
2 of 142 of 14 Items
Question
Coal is a very useful rock that formed over millions of years from the remains of plants. Is coal a mineral?(1 point)
Responses
No, coal is not a mineral because coal can be burned to produce electricity and heat.
No, coal is not a mineral because coal can be burned to produce electricity and heat.
No, coal is not a mineral because coal is made of dead plants.
No, coal is not a mineral because coal is made of dead plants.
Yes, coal is a mineral because all rocks are nonliving solid minerals.
Yes, coal is a mineral because all rocks are nonliving solid minerals.
Yes, coal is a mineral because all rocks that are useful to people are minerals.
Yes, coal is a mineral because all rocks that are useful to people are minerals.
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No, coal is not a mineral because coal is made of dead plants.
The correct answer is:
No, coal is not a mineral because coal is made of dead plants.
To determine if coal is a mineral, we need to understand what a mineral is. A mineral is a naturally occurring, inorganic solid substance with a specific chemical composition and a crystal structure.
Coal, on the other hand, is formed from the remains of plants that have decayed over millions of years. It is considered an organic rock rather than a mineral because it is composed of organic materials. Therefore, coal does not meet the criteria to be classified as a mineral.
The other answer options are incorrect because they either confuse coal with its uses or make a generalization about rocks being minerals, which is not true.
The correct answer is: No, coal is not a mineral because coal is made of dead plants.
Question
Which is a negative aspect of fossil fuels?(1 point)
Responses
They take a long time to produce energy.
They take a long time to produce energy.
They cause pollution on Earth.
They cause pollution on Earth.
They are difficult to find.
They are difficult to find.
They are difficult to transport.
They are difficult to transport.