modified true/false
indicate whether the sentence or statement is true or false. if false, change the identified word or phrase to make the sentence or statement true.
____ 1. in the united states, the fossil fuel that is present in the largest amount is natural gas.
____ 2. fossil fuels are considered to be nonrenewable because they form at a much slower rate than that at which they are used.
____ 3. the growth of the world’s population, and the invention of new products such as cars, has not increased the use of earth’s resources
____ 4. incandescent light bulbs are less efficient than compact fluorescent bulbs.
____ 5. natural gas is more likely than coal or oil to cause air pollution.

multiple choice
identify the letter of the choice that best completes the statement or answers the question
____ 6. substances that provide energy as the result of a chemical change are called
a. fertilizers.
b. reserves.
c. fuels.
d. refineries.
____ 7. the process of burning a fuel to change chemical energy into thermal energy is called
a. heat.
b. electricity.
c. energy.
d. combustion.
____ 8. what is the main reason nonrenewable resources may run out in the future?
a. the population of the world is growing smaller.
b. the population of the world is slowly growing larger.
c. the population of the world is rapidly growing larger.
d. the amount of natural resources is growing faster than its use.
____ 9. the three major fossil fuels are coal, oil, and
a. wood.
b. natural gas.
c. gasoline.
d. electricity.
____ 10. fossil fuels are energy - rich because they contain
a. fossil fragments.
b. heat.
c. electricity.
d. hydrocarbons

Question

modified true/false
indicate whether the sentence or statement is true or false. if false, change the identified word or phrase to make the sentence or statement true.
____ 1. in the united states, the fossil fuel that is present in the largest amount is natural gas.
____ 2. fossil fuels are considered to be nonrenewable because they form at a much slower rate than that at which they are used.
____ 3. the growth of the world’s population, and the invention of new products such as cars, has not increased the use of earth’s resources
____ 4. incandescent light bulbs are less efficient than compact fluorescent bulbs.
____ 5. natural gas is more likely than coal or oil to cause air pollution.

multiple choice
identify the letter of the choice that best completes the statement or answers the question
____ 6. substances that provide energy as the result of a chemical change are called
a. fertilizers.
b. reserves.
c. fuels.
d. refineries.
____ 7. the process of burning a fuel to change chemical energy into thermal energy is called
a. heat.
b. electricity.
c. energy.
d. combustion.
____ 8. what is the main reason nonrenewable resources may run out in the future?
a. the population of the world is growing smaller.
b. the population of the world is slowly growing larger.
c. the population of the world is rapidly growing larger.
d. the amount of natural resources is growing faster than its use.
____ 9. the three major fossil fuels are coal, oil, and
a. wood.
b. natural gas.
c. gasoline.
d. electricity.
____ 10. fossil fuels are energy - rich because they contain
a. fossil fragments.
b. heat.
c. electricity.
d. hydrocarbons

Accepted Answer

### Modified True/False
1.
# Brief Explanations:
In the US, the most abundant fossil fuel is coal, not natural gas. So the statement is false; change "natural gas" to "coal".
# Answer:
False; change "natural gas" to "coal"

2.
# Brief Explanations:
Nonrenewable resources like fossil fuels form over millions of years (very slow) while we use them quickly, so they are nonrenewable as their formation rate is much slower than usage rate. The statement is true.
# Answer:
True

3.
# Brief Explanations:
Growing population and new products (like cars) increase resource use, so saying "has not increased" is false. Change "has not increased" to "has increased".
# Answer:
False; change "has not increased" to "has increased"

4.
# Brief Explanations:
Incandescent bulbs convert less energy to light (more to heat) than compact fluorescent bulbs, so they are less efficient. The statement is true.
# Answer:
True

5.
# Brief Explanations:
Natural gas burns cleaner than coal or oil, so it's less likely to cause air pollution. The statement is false; change "more" to "less".
# Answer:
False; change "more" to "less"

### Multiple Choice
6.
# Brief Explanations:
Fuels are substances that release energy via chemical change (like burning). Fertilizers help plants, reserves are stored resources, refineries process fuels. So the answer is c.
# Answer:
c. fuels

7.
# Brief Explanations:
Combustion is the process of burning fuel to turn chemical energy into thermal (heat) energy. Heat is energy, electricity is different, energy is general. So answer is d.
# Answer:
d. combustion

8.
# Brief Explanations:
Nonrenewable resources may run out because world population is growing rapidly, increasing demand. Option a is wrong (population grows), b is "slowly" (not rapid), d is wrong (resources don't grow faster than use). So answer is c.
# Answer:
c. The population of the world is rapidly growing larger.

9.
# Brief Explanations:
Three major fossil fuels are coal, oil, and natural gas. Wood is biomass, gasoline is refined from oil, electricity is energy. So answer is b.
# Answer:
b. natural gas

10.
# Brief Explanations:
Fossil fuels (like coal, oil, gas) are hydrocarbons (compounds of hydrogen and carbon), which release energy when burned. Fossil fragments aren't the energy source, heat/electricity are energy forms, not what they contain. So answer is d.
# Answer:
d. hydrocarbons

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Modified True/False

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