Lesson 1
1.
Nuclear fusion is a renewable source of energy.
A) True
B) False
Feedback: Nuclear fusion uses hydrogen isotopes and hydrogen isotopes
can come from water. There is plenty of water on this planet to provide
energy for literally millions of years. This makes nuclear fusion a renewable
source of energy.
2.
One calorie is defined as the amount of energy that is required to raise the
temperature of _____.
B) 1 g of water by 1ºC.
Feedback: A calorie is the amount of energy required to heat one gram of
water through 1°C.
3.
Energy can be converted to which of the following?
A) Work
B) Heat
C) Radiation
D) All of the above
Feedback: Energy is the property of matter that can be converted to heat,
work or radiation. So, “all of the above” is the correct choice.
4.
Which one of the following is a unit of power?
A) Joule
B) Btu/h
C) Watt/hour
D) Quad
Feedback: Power is the rate at which energy is consumed. When we say
rate, we mean per unit time, so BTU/h is a unit of power. Since, Watt is a
unit of power, Watt divided by hour is neither a unit of power not energy.
,5.
One BTU of energy is enough to do what?
B) Heat one pound of water by one degree Fahrenheit.
Feedback: A BTU is the amount of energy that is required to heat 1 lb of
water by 1°F.
6.
A 100 watt incandescent light bulb is operated for 120 hours, and a 15 watt
fluorescent light bulb is operated for the same period of time. At 10 cents
per kWh, what is the cost savings of the fluorescent bulb?
A) $1.02
Feedback: Energy = Power x duration, 100W x 120h = 12,000Wh = 12
kWh 15W x 120h =1,800 Wh = 1.8 kWh Energy savings is the difference
(12-1.8) kWh = 10.2 kWh; at the rate of 10 cents per kWh this amounts to
$1.02
7.
Energy can be converted from one form to another.
A) True
Feedback: Energy cannot be created or destroyed but it can be converted
from one form to another.
8.
A BTU has more energy than a calorie.
A) True
B) False
Feedback: A BTU is the amount of heat required to heat 1 lb (454 grams)
of water through 1°F. Whereas 1 calorie is the amount of heat required to
raise 1 g of water through 1°C. Therefore there is more energy in one BTU.
Study-Mate Game
1. Energy can be converted to which of the following:
- Work
- Heat
- Radiation
2. Which of the following is a unit of power?
- Btu/h
3. One BTU of energy is enough to do what?
, - Heat one pound of water by one degree Fahrenheit
4. One calorie is defined as the amount of energy that is required to
raise the temperature of ________.
- 1g of water by 1o C
5. Nuclear fusion is renewable source of energy
- True
6. A BTU has more energy than a calorie.
- True
7. Energy can be converted from one from to another
- True
8. Geothermal heat can be used to produce electricity.
- True
9. In which one of the following lists are all energy sources examples
of mechanical energy?
- Wind, tidal energy, Coiled spring
10. An energy source is nonrenewable if _______.
- If the source cannot be regenerated in a reasonable time perios
11. From the following, identify the list where all energy
sources are non-renewable energy sources.
- Nuclear Fission, Petroleum
12. Units of energy when divided by time of usage give units of
__.
- Power
13. A 100-watt incandescent light bulb is operated for 120
hours, and a 15-watt fluorescent light bulb is operated for same
period of time. At 10 cents per kWh, what is the cost savings of the
fluorescent bulb?
- 1.02
14. If Peter expends 1,500 calories running a mile in one hour
and Samantha burns 1,500 calories riding a bike in forty-five
minutes. Which one of the two spent the greatest amount of
energy?
- They are the same
15. If Peter expends 2,000 calories running a mile in one hour
and Samantha burns 1000 calories riding a bike in thirty minutes.
Who exerted the greatest amount of power?
- They are the same
16. An old refrigerator, which is rated at 494 Watts and runs for
13 hours everyday, is replaced by a new energy efficient
, refrigerator, which is rated at 221 Watts and is expected to run 8
hours everyday.
- 20.2
Study-Mate Game
1. If Peter expends 2,000 calories running mile in one hour a
Samantha burn 1000 calories riding a bike in thirty minutes. Who
spent the greatest amount of energy during their exercise?
Ans:
2. From a computer, the useful energy output is in the form of ____
energy
Ans: Radiant
3. A ____ calories (Cal) is equal to one kilocalorie.
Ans: Food
4. If Peter expends 1,000 calories running a mile in one hour and
Samantha burns 1000 calories riding a bike in forty-five minutes.
Which one of the two exerted more power?
Ans: Samantha
5. Photosynthesis is a process by which _____ energy is converted to
chemical energy
Ans: Solar
6. One ____ equals the production or use of one joule of energy per
second.
Ans: Watt
7. Calorie/second is a unit of _____.
Ans: Power
8. The Middle East is richest in which of the natural resources?
Ans: Petroleum
9. Which natural resources is the United States richest in?
Ans: Coal
10. The energy in fossil fuels such as coal is stores as ____energy.
Ans: Chemical
11. In a windmill, ___ energy is finally converted to electrical
energy.
Ans: Mechanical
12. Unites of power when multiplied by time of usage give the
units of ____.
Ans: Energy
13. In fossil ___, energy is stored in bond as chemical energy.
Ans: Fuels
1.
Nuclear fusion is a renewable source of energy.
A) True
B) False
Feedback: Nuclear fusion uses hydrogen isotopes and hydrogen isotopes
can come from water. There is plenty of water on this planet to provide
energy for literally millions of years. This makes nuclear fusion a renewable
source of energy.
2.
One calorie is defined as the amount of energy that is required to raise the
temperature of _____.
B) 1 g of water by 1ºC.
Feedback: A calorie is the amount of energy required to heat one gram of
water through 1°C.
3.
Energy can be converted to which of the following?
A) Work
B) Heat
C) Radiation
D) All of the above
Feedback: Energy is the property of matter that can be converted to heat,
work or radiation. So, “all of the above” is the correct choice.
4.
Which one of the following is a unit of power?
A) Joule
B) Btu/h
C) Watt/hour
D) Quad
Feedback: Power is the rate at which energy is consumed. When we say
rate, we mean per unit time, so BTU/h is a unit of power. Since, Watt is a
unit of power, Watt divided by hour is neither a unit of power not energy.
,5.
One BTU of energy is enough to do what?
B) Heat one pound of water by one degree Fahrenheit.
Feedback: A BTU is the amount of energy that is required to heat 1 lb of
water by 1°F.
6.
A 100 watt incandescent light bulb is operated for 120 hours, and a 15 watt
fluorescent light bulb is operated for the same period of time. At 10 cents
per kWh, what is the cost savings of the fluorescent bulb?
A) $1.02
Feedback: Energy = Power x duration, 100W x 120h = 12,000Wh = 12
kWh 15W x 120h =1,800 Wh = 1.8 kWh Energy savings is the difference
(12-1.8) kWh = 10.2 kWh; at the rate of 10 cents per kWh this amounts to
$1.02
7.
Energy can be converted from one form to another.
A) True
Feedback: Energy cannot be created or destroyed but it can be converted
from one form to another.
8.
A BTU has more energy than a calorie.
A) True
B) False
Feedback: A BTU is the amount of heat required to heat 1 lb (454 grams)
of water through 1°F. Whereas 1 calorie is the amount of heat required to
raise 1 g of water through 1°C. Therefore there is more energy in one BTU.
Study-Mate Game
1. Energy can be converted to which of the following:
- Work
- Heat
- Radiation
2. Which of the following is a unit of power?
- Btu/h
3. One BTU of energy is enough to do what?
, - Heat one pound of water by one degree Fahrenheit
4. One calorie is defined as the amount of energy that is required to
raise the temperature of ________.
- 1g of water by 1o C
5. Nuclear fusion is renewable source of energy
- True
6. A BTU has more energy than a calorie.
- True
7. Energy can be converted from one from to another
- True
8. Geothermal heat can be used to produce electricity.
- True
9. In which one of the following lists are all energy sources examples
of mechanical energy?
- Wind, tidal energy, Coiled spring
10. An energy source is nonrenewable if _______.
- If the source cannot be regenerated in a reasonable time perios
11. From the following, identify the list where all energy
sources are non-renewable energy sources.
- Nuclear Fission, Petroleum
12. Units of energy when divided by time of usage give units of
__.
- Power
13. A 100-watt incandescent light bulb is operated for 120
hours, and a 15-watt fluorescent light bulb is operated for same
period of time. At 10 cents per kWh, what is the cost savings of the
fluorescent bulb?
- 1.02
14. If Peter expends 1,500 calories running a mile in one hour
and Samantha burns 1,500 calories riding a bike in forty-five
minutes. Which one of the two spent the greatest amount of
energy?
- They are the same
15. If Peter expends 2,000 calories running a mile in one hour
and Samantha burns 1000 calories riding a bike in thirty minutes.
Who exerted the greatest amount of power?
- They are the same
16. An old refrigerator, which is rated at 494 Watts and runs for
13 hours everyday, is replaced by a new energy efficient
, refrigerator, which is rated at 221 Watts and is expected to run 8
hours everyday.
- 20.2
Study-Mate Game
1. If Peter expends 2,000 calories running mile in one hour a
Samantha burn 1000 calories riding a bike in thirty minutes. Who
spent the greatest amount of energy during their exercise?
Ans:
2. From a computer, the useful energy output is in the form of ____
energy
Ans: Radiant
3. A ____ calories (Cal) is equal to one kilocalorie.
Ans: Food
4. If Peter expends 1,000 calories running a mile in one hour and
Samantha burns 1000 calories riding a bike in forty-five minutes.
Which one of the two exerted more power?
Ans: Samantha
5. Photosynthesis is a process by which _____ energy is converted to
chemical energy
Ans: Solar
6. One ____ equals the production or use of one joule of energy per
second.
Ans: Watt
7. Calorie/second is a unit of _____.
Ans: Power
8. The Middle East is richest in which of the natural resources?
Ans: Petroleum
9. Which natural resources is the United States richest in?
Ans: Coal
10. The energy in fossil fuels such as coal is stores as ____energy.
Ans: Chemical
11. In a windmill, ___ energy is finally converted to electrical
energy.
Ans: Mechanical
12. Unites of power when multiplied by time of usage give the
units of ____.
Ans: Energy
13. In fossil ___, energy is stored in bond as chemical energy.
Ans: Fuels
