Lesson 01 Quiz
Your response has been submitted successfully.
[pic]
We will record the highest score from these lesson quizzes so feel free to take it again (max 10 access attempts) to score 100%.
|Points Awarded | 11 |
|Points Missed | 3 |
|Percentage | 79% |
|1. |In the United States, which is the most popular method for heating homes? |
| |A. |
| |Electricity |
| | |
| |B. |
| |Fuel Oil |
| | |
| |C. |
| |Natural Gas |
| | |
| |D. |
| |Coal |
| | |
Correct!
[pic]
Natural Gas supplies 53% of the fuel used to heat homes during the winter. Natural gas is typically cheaper than other fuels, required no storage, and fairly clean (no ash produced).
|[pic]|Points Earned: |1/1 |
|Your Response: |C |
|2. |What type of lights is typically used outside of buildings, such as Hosler Building at Penn State Main Campus? |
| |A. |
| |Compact Fluorescent |
| | |
| |B. |
| |Fluorescent |
| | |
| |C. |
| |Incandescent |
| | |
| |D. |
| |Natural Gas or Town Gas |
| | |
Sorry, typically incandescent bulbs are not used outside of buildings for lighting in energy conscientious universities. These are the common household light bulbs.
[pic]
|[pic]|Points Earned: |0/1 |
|Your Response: |C |
|3. |Of the following, which allows the greatest amount of air to flow into a home? |
| |A. |
| |Electric Outlets |
| | |
| |B. |
| |Fire Places |
| | |
| |C. |
| |Windows |
| | |
| |D. |
| |Doors |
| | |
Sorry, only about 10% of the total air enters a home through the windows. This can be improved upon by installing double and triple pane windows along with spray foam insulation to fill any remaining void spaces. Of course, keeping the windows shut always helps too!
|[pic]|Points Earned: |0/1 |
|Your Response: |C |
|4. |In the Northern Hemisphere, which direction should a home face to receive maximum benefits from solar radiation? |
| |A. |
| |South |
| | |
| |B. |
| |North |
| | |
| |C. |
| |East |
| | |
| |D. |
| |West |
| | |
In the northern hemisphere (where the United States is located), a home should face due south to receive the maximum exposure to solar energy.� This is hard to do because typically homes face the road, no matter what direction it may be.� So, a home that will take advantage of solar energy may take some planning!
|[pic]|Points Earned: |1/1 |
|Your Response: |A |
|5. |How does a microwave oven operate? |
| |A. |
| |Microwaves Heat A Filament Which Produces Heat |
| | |
| |B. |
| |Microwave TM Is Just A Brand Name Of Toaster Oven |
| | |
| |C. |
| |Microwaves Penetrate The Food And Excite The Internal Water Molecules |
| | |
| |D. |
| |Microwaves Heat A Pool Of Water Which Steams The Food (hence the steam that comes off food fresh out of the microwave) |
| | |
Correct! A microwave oven operates by bombarding your food with �micro waves.�� These waves excite the food molecules (particularly the water molecules in the food) giving them more movement and energy.� An increase in molecular movement and energy is equal to an increase in temperature. Microwaves can also be used as a secure communication device.
|[pic]|Points Earned: |1/1 |
|Your Response: |C |
|6. |Which type of waves has the smallest wavelength and the most energy of any other wave in the electromagnetic spectrum? |
| |A. |
| |Ocean Waves |
| | |
| |B. |
| |Gamma Rays |
| | |
| |C. |
| |Radio Waves |
| | |
| |D. |
| |Micro Waves |
| | |
Correct!
[pic]
Source NASA Gamma rays have the shortest length and the highest intensity of any wave.
|[pic]|Points Earned: |1/1 |
|Your Response: |B |
|7. |In TA's apartment, the monthly electric bill is $60 (one wonders). If electricity totals a cost of 6.6¢ per kilowatt-hour |
| |(including all the fees such as line charges, transfer fees, generation fees, etc.), approximately how many kilowatt-hours |
| |of electricity does a typical student apartment consume in a month? |
| |A. |
| |1500 kW-hr |
| | |
| |B. |
| |900 kW-hr |
| | |
| |C. |
| |200 kW-hr |
| | |
| |D. |
| |500 kW-hr |
| | |
Correct!
$60 / $0.066 per kW-hr = 909 kW-hrs.
|[pic]|Points Earned: |1/1 |
|Your Response: |B |
|8. |Which types of plants are best to plant around your home in order to keep sunlight out during summer months, but allow |
| |sunlight in during winter months? |
| |A. |
| |Deciduous Trees |
| | |
| |B. |
| |Pine Trees |
| | |
| |C. |
| |Sunflowers |
| | |
| |D. |
| |Various Shrubs |
| | |
Correct! Deciduous trees are the best choice for maximizing the benefits of solar radiation.� In the summer months, these trees are full of foliage that provides shade from the rays, thus helping to cool the home.� In the winter months, deciduous trees lose their leaves.� This allows solar energy to reach the home, maximizing the benefit. [pic]
|[pic]|Points Earned: |1/1 |
|Your Response: |A |
|9. |Which of the following units would be best described as a measure of efficiency? |
| |A. |
| |Joules |
| | |
| |B. |
| |Hours |
| | |
| |C. |
| |Feet |
| | |
| |D. |
| |Miles per Gallon |
| | |
Sorry, joules are not a measure of efficiency, but rather energy.
|[pic|Points Earned: |0/1 |
|] | | |
|Your Response: |A |
|10. |During the summer, the use of geothermal energy heat pump will produce air that is: |
| |[pic] |
| |A. |
| |Geothermal Heat Pumps Can Not Be Used During The Summer |
| | |
| |B. |
| |Approximately The Same Temerature As The Ambient Air |
| | |
| |C. |
| |Warmer Than The Ambient Air |
| | |
| |D. |
| |Cooler Than The Ambient Air |
| | |
Correct! A couple meters deep, the earth remains at a constant temperature (approximately 50 to 55 degrees Fahrenheit). During summer months, the ambient air is much warmer (typically 80 degrees Fahrenheit or more!). As a result, warm air can be circulated through the ground to cool it. It can also produce hot water for the house!
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |D |
|11. |In 2000, what was the average cost per kW-hr for delivered residential electricity in Pennsylvania? |
| |A. |
| |11.6 cents |
| | |
| |B. |
| |6.6 cents |
| | |
| |C. |
| |4.8 cents |
| | |
| |D. |
| |5.3 cents |
| | |
Correct! PA residents averaged 6.6 cents per kW-hr for electricity in 2000. This cost reflects a mix of nuclear, coal, and some renewable electricity generation.
[pic]
If it was more expensive it would make more sense to add additional insulation in our homes heated by electric heating.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |B |
|12. |When a refrigerant changes phase from a liquid to a gas, what does it do? |
| |A. |
| |It Adsorbs Heat |
| | |
| |B. |
| |It Creates Energy |
| | |
| |C. |
| |It Gives Off Heat |
| | |
| |D. |
| |It Makes A Whistling Sound |
| | |
Correct! Expansion of a fluid from the liquid phase to the gas phase absorbs A LOT of heat. Think about how much heat is required to boil water. Similar to sweating where the water evaporates thus cooling you. Note this is not water to steam.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |A |
|13. |Electricity generated from a coal fired power plant costs approximately 4¢ per kW-hr. Electricity generated from a |
| |farm of wind turbines costs approximately 9¢ per kW-hr. If a household chooses to purchase renewable electricity |
| |generated from the wind, how much more will it cost the family. Assume the during one year, then family consumes |
| |10,000 kW-hrs of electricity. |
| |A. |
| |$500 |
| | |
| |B. |
| |$900 |
| | |
| |C. |
| |$400 |
| | |
| |D. |
| |$1300 |
| | |
Correct. The difference in price between the two choices is 5 cents (9 cents minus 4 cents). Over 104kW -hrs of electricity, the cost will be:
104kW -hrs * $0.05 = $500
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |A |
|14. |An air conditioner is an example of a: |
| |A. |
| |A Miniature Chemical Reactor |
| | |
| |B. |
| |A Renewable Energy Source |
| | |
| |C. |
| |Heat Pump |
| | |
| |D. |
| |Low Energy Consumption Device |
| | |
Correct! An air conditioner operates by absorbing heat (from the room or vehicle) into a refrigerant fluid, then expelling the heat by compressing the fluid (now a gas) (typically outside) via a heat exchanger. Thus, an air conditioner is an example of a heat pump, as is a refrigerator.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |C |
Lesson 01 Quiz
Your response has been submitted successfully.
[pic]
We will record the highest score from these lesson quizzes so feel free to take it again (max 10 access attempts) to score 100%.
|Points Awarded | 14 |
|Points Missed | 2 |
|Percentage | 88% |
|1. |Of the three types of heat transfer, which would best describe the warmth felt from a hot, yellow, luminous campfire from 6 |
| |feet away? |
| |A. |
| |No heat transfer occurs from a campfire. |
| | |
| |B. |
| |Convection |
| | |
| |C. |
| |Radiation |
| | |
| |D. |
| |Conduction |
| | |
Correct! Radiation refers to the transfer of heat from one body to another, not in contact with it, by means of wave motion through space. Think about the heat given off from a camp fire.
|[pic]|Points Earned: |1/1 |
|Your Response: |C |
|2. |Home geothermal systems typically generate? [select all that apply] |
| |[pic]A. |
| |hot water |
| | |
| |B. |
| |electricity |
| | |
| |C. |
| |hot air |
| | |
| |D. |
| |cool air |
| | |
correct in the winter (cold weather)
Correct in the summer (warm weather)
|[pic]|Points Earned: |2/3 |
|Your Response: |C, D |
|3. |In the United States, which is the most popular method for heating homes? |
| |A. |
| |Fuel Oil |
| | |
| |B. |
| |Coal |
| | |
| |C. |
| |Natural Gas |
| | |
| |D. |
| |Electricity |
| | |
Correct!
[pic]
Natural Gas supplies 53% of the fuel used to heat homes during the winter. Natural gas is typically cheaper than other fuels, required no storage, and fairly clean (no ash produced).
|[pic]|Points Earned: |1/1 |
|Your Response: |C |
|4. |Which types of plants are best to plant around your home in order to keep sunlight out during summer months, but allow |
| |sunlight in during winter months? |
| |A. |
| |Various Shrubs |
| | |
| |B. |
| |Sunflowers |
| | |
| |C. |
| |Deciduous Trees |
| | |
| |D. |
| |Pine Trees |
| | |
Sorry, shrubs are not big enough to provide shade during the summer months. If they are big enough to provide shade, they do not lose their needles during the winter months to allow sun rays to enter a home and provide some warmth.
|[pic]|Points Earned: |0/1 |
|Your Response: |A |
|5. |What is the definition of efficiency? |
| |A. |
| |The Amount Of Useful Energy Divided By The Energy Input Multiplied By 100 |
| | |
| |B. |
| |The Quantity Of Heat Produced From One Light Bulb |
| | |
| |C. |
| |The Amount Of Electricity Required To Operate One Light Bulb For One Hour |
| | |
| |D. |
| |The Highest Temperature a Light Bulb Will Reach When In Use |
| | |
Correct! Efficiency is defined as the amount of useful energy produced divided by the amount of input energy times one hundred (to convert to a percentage).
|[pic]|Points Earned: |1/1 |
|Your Response: |A |
|6. |During the summer, the use of geothermal energy heat pump will produce air that is: |
| |[pic] |
| |A. |
| |Geothermal Heat Pumps Can Not Be Used During The Summer |
| | |
| |B. |
| |Cooler Than The Ambient Air |
| | |
| |C. |
| |Warmer Than The Ambient Air |
| | |
| |D. |
| |Approximately The Same Temerature As The Ambient Air |
| | |
Correct! A couple meters deep, the earth remains at a constant temperature (approximately 50 to 55 degrees Fahrenheit). During summer months, the ambient air is much warmer (typically 80 degrees Fahrenheit or more!). As a result, warm air can be circulated through the ground to cool it. It can also produce hot water for the house!
|[pic]|Points Earned: |1/1 |
|Your Response: |B |
|7. |The headlights of most late model foreign cars (such as Mercedes, BMW, VW, etc) are of what type? |
| |A. |
| |Compact Fluorescent |
| | |
| |B. |
| |Incandescent |
| | |
| |C. |
| |Fluorescent |
| | |
| |D. |
| |Halogen |
| | |
Correct! Most late model vehicles use either Halogen or Halogen/Xenon headlamps.� These lamps provide brighter light and illuminate more area that traditional headlights. In addition to the brighter light, a parabolic shaped is incorporated into the design so all of the light is concentrated at one focal point to produce a brighter beam.
How is light concentration using mirrors beneficial for such applications as collecting solar energy?
|[pic]|Points Earned: |1/1 |
|Your Response: |D |
|8. |Of the following, which allows the greatest amount of air to flow into a home? |
| |A. |
| |Doors |
| | |
| |B. |
| |Windows |
| | |
| |C. |
| |Electric Outlets |
| | |
| |D. |
| |Fire Places |
| | |
Correct! Fireplaces contribute to 14% of the total air infiltration into a home. Besides keeping the flue closed when not in use, there is little one can do to prevent air from entering through the fireplace. [pic]Source DOE.
|[pic]|Points Earned: |1/1 |
|Your Response: |D |
|9. |In TA's apartment, the monthly electric bill is $60 (one wonders). If electricity totals a cost of 6.6¢ per kilowatt-hour |
| |(including all the fees such as line charges, transfer fees, generation fees, etc.), approximately how many kilowatt-hours |
| |of electricity does a typical student apartment consume in a month? |
| |A. |
| |900 kW-hr |
| | |
| |B. |
| |1500 kW-hr |
| | |
| |C. |
| |200 kW-hr |
| | |
| |D. |
| |500 kW-hr |
| | |
Correct!
$60 / $0.066 per kW-hr = 909 kW-hrs.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |A |
|10. |When a refrigerant changes phase from a liquid to a gas, what does it do? |
| |A. |
| |It Makes A Whistling Sound |
| | |
| |B. |
| |It Gives Off Heat |
| | |
| |C. |
| |It Adsorbs Heat |
| | |
| |D. |
| |It Creates Energy |
| | |
Correct! Expansion of a fluid from the liquid phase to the gas phase absorbs A LOT of heat. Think about how much heat is required to boil water. Similar to sweating where the water evaporates thus cooling you. Note this is not water to steam.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |C |
|11. |Which of the following units would be best described as a measure of efficiency? |
| |A. |
| |Miles per Gallon |
| | |
| |B. |
| |Feet |
| | |
| |C. |
| |Joules |
| | |
| |D. |
| |Hours |
| | |
Correct! Miles per gallon is a measure of efficiency for a vehicle. It tells you how far your vehicle can travel using a given amount of fuel. Typically smaller compact cars are able to get around 30 miles per gallon, while full sized pickup trucks and SUV�s operate in the 15 to 18 mpg range. Thus the compact car is more efficient.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |A |
|12. |An air conditioner is an example of a: |
| |A. |
| |A Miniature Chemical Reactor |
| | |
| |B. |
| |Heat Pump |
| | |
| |C. |
| |Low Energy Consumption Device |
| | |
| |D. |
| |A Renewable Energy Source |
| | |
Correct! An air conditioner operates by absorbing heat (from the room or vehicle) into a refrigerant fluid, then expelling the heat by compressing the fluid (now a gas) (typically outside) via a heat exchanger. Thus, an air conditioner is an example of a heat pump, as is a refrigerator.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |B |
|13. |Which type of waves has the smallest wavelength and the most energy of any other wave in the electromagnetic |
| |spectrum? |
| |A. |
| |Ocean Waves |
| | |
| |B. |
| |Radio Waves |
| | |
| |C. |
| |Micro Waves |
| | |
| |D. |
| |Gamma Rays |
| | |
Correct!
[pic]
Source NASA Gamma rays have the shortest length and the highest intensity of any wave.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |D |
|14. |In 2000, what was the average cost per kW-hr for delivered residential electricity in Pennsylvania? |
| |A. |
| |6.6 cents |
| | |
| |B. |
| |5.3 cents |
| | |
| |C. |
| |4.8 cents |
| | |
| |D. |
| |11.6 cents |
| | |
Correct! PA residents averaged 6.6 cents per kW-hr for electricity in 2000. This cost reflects a mix of nuclear, coal, and some renewable electricity generation.
[pic]
If it was more expensive it would make more sense to add additional insulation in our homes heated by electric heating.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |A |
Lesson 01 Quiz
Your response has been submitted successfully.
[pic]
We will record the highest score from these lesson quizzes so feel free to take it again (max 10 access attempts) to score 100%.
|Points Awarded | 16 |
|Points Missed | 0 |
|Percentage | 100% |
|1. |Home geothermal systems typically generate? [select all that apply] |
| |[pic]A. |
| |electricity |
| | |
| |B. |
| |hot water |
| | |
| |C. |
| |cool air |
| | |
| |D. |
| |hot air |
| | |
Correct in the summer
Correct in the summer (warm weather) correct in the winter (cold weather)
|[pic]|Points Earned: |3/3 |
|Your Response: |B, C, D |
|2. |Which type of waves has the smallest wavelength and the most energy of any other wave in the electromagnetic spectrum? |
| |A. |
| |Radio Waves |
| | |
| |B. |
| |Ocean Waves |
| | |
| |C. |
| |Gamma Rays |
| | |
| |D. |
| |Micro Waves |
| | |
Correct!
[pic]
Source NASA Gamma rays have the shortest length and the highest intensity of any wave.
|[pic]|Points Earned: |1/1 |
|Your Response: |C |
|3. |During the summer, the use of geothermal energy heat pump will produce air that is: |
| |[pic] |
| |A. |
| |Cooler Than The Ambient Air |
| | |
| |B. |
| |Geothermal Heat Pumps Can Not Be Used During The Summer |
| | |
| |C. |
| |Approximately The Same Temerature As The Ambient Air |
| | |
| |D. |
| |Warmer Than The Ambient Air |
| | |
Correct! A couple meters deep, the earth remains at a constant temperature (approximately 50 to 55 degrees Fahrenheit). During summer months, the ambient air is much warmer (typically 80 degrees Fahrenheit or more!). As a result, warm air can be circulated through the ground to cool it. It can also produce hot water for the house!
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |A |
|4. |An air conditioner is an example of a: |
| |A. |
| |Heat Pump |
| | |
| |B. |
| |A Miniature Chemical Reactor |
| | |
| |C. |
| |A Renewable Energy Source |
| | |
| |D. |
| |Low Energy Consumption Device |
| | |
Correct! An air conditioner operates by absorbing heat (from the room or vehicle) into a refrigerant fluid, then expelling the heat by compressing the fluid (now a gas) (typically outside) via a heat exchanger. Thus, an air conditioner is an example of a heat pump, as is a refrigerator.
|[pic]|Points Earned: |1/1 |
|Your Response: |A |
|5. |Which of the following units would be best described as a measure of efficiency? |
| |A. |
| |Hours |
| | |
| |B. |
| |Feet |
| | |
| |C. |
| |Joules |
| | |
| |D. |
| |Miles per Gallon |
| | |
Correct! Miles per gallon is a measure of efficiency for a vehicle. It tells you how far your vehicle can travel using a given amount of fuel. Typically smaller compact cars are able to get around 30 miles per gallon, while full sized pickup trucks and SUV�s operate in the 15 to 18 mpg range. Thus the compact car is more efficient.
|[pic]|Points Earned: |1/1 |
|Your Response: |D |
|6. |How does a microwave oven operate? |
| |A. |
| |Microwaves Heat A Filament Which Produces Heat |
| | |
| |B. |
| |Microwaves Heat A Pool Of Water Which Steams The Food (hence the steam that comes off food fresh out of the microwave) |
| | |
| |C. |
| |Microwave TM Is Just A Brand Name Of Toaster Oven |
| | |
| |D. |
| |Microwaves Penetrate The Food And Excite The Internal Water Molecules |
| | |
Correct! A microwave oven operates by bombarding your food with �micro waves.�� These waves excite the food molecules (particularly the water molecules in the food) giving them more movement and energy.� An increase in molecular movement and energy is equal to an increase in temperature. Microwaves can also be used as a secure communication device.
|[pic]|Points Earned: |1/1 |
|Your Response: |D |
|7. |Of the following, which allows the greatest amount of air to flow into a home? |
| |A. |
| |Windows |
| | |
| |B. |
| |Doors |
| | |
| |C. |
| |Fire Places |
| | |
| |D. |
| |Electric Outlets |
| | |
Correct! Fireplaces contribute to 14% of the total air infiltration into a home. Besides keeping the flue closed when not in use, there is little one can do to prevent air from entering through the fireplace. [pic]Source DOE.
|[pic]|Points Earned: |1/1 |
|Your Response: |C |
|8. |In the United States, which is the most popular method for heating homes? |
| |A. |
| |Fuel Oil |
| | |
| |B. |
| |Natural Gas |
| | |
| |C. |
| |Coal |
| | |
| |D. |
| |Electricity |
| | |
Correct!
[pic]
Natural Gas supplies 53% of the fuel used to heat homes during the winter. Natural gas is typically cheaper than other fuels, required no storage, and fairly clean (no ash produced).
|[pic]|Points Earned: |1/1 |
|Your Response: |B |
|9. |When a refrigerant changes phase from a liquid to a gas, what does it do? |
| |A. |
| |It Creates Energy |
| | |
| |B. |
| |It Gives Off Heat |
| | |
| |C. |
| |It Adsorbs Heat |
| | |
| |D. |
| |It Makes A Whistling Sound |
| | |
Correct! Expansion of a fluid from the liquid phase to the gas phase absorbs A LOT of heat. Think about how much heat is required to boil water. Similar to sweating where the water evaporates thus cooling you. Note this is not water to steam.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |C |
|10. |In 2000, what was the average cost per kW-hr for delivered residential electricity in Pennsylvania? |
| |A. |
| |6.6 cents |
| | |
| |B. |
| |4.8 cents |
| | |
| |C. |
| |5.3 cents |
| | |
| |D. |
| |11.6 cents |
| | |
Correct! PA residents averaged 6.6 cents per kW-hr for electricity in 2000. This cost reflects a mix of nuclear, coal, and some renewable electricity generation.
[pic]
If it was more expensive it would make more sense to add additional insulation in our homes heated by electric heating.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |A |
|11. |What is the definition of efficiency? |
| |A. |
| |The Quantity Of Heat Produced From One Light Bulb |
| | |
| |B. |
| |The Amount Of Useful Energy Divided By The Energy Input Multiplied By 100 |
| | |
| |C. |
| |The Highest Temperature a Light Bulb Will Reach When In Use |
| | |
| |D. |
| |The Amount Of Electricity Required To Operate One Light Bulb For One Hour |
| | |
Correct! Efficiency is defined as the amount of useful energy produced divided by the amount of input energy times one hundred (to convert to a percentage).
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |B |
|12. |Electricity generated from a coal fired power plant costs approximately 4¢ per kW-hr. Electricity generated from a |
| |farm of wind turbines costs approximately 9¢ per kW-hr. If a household chooses to purchase renewable electricity |
| |generated from the wind, how much more will it cost the family. Assume the during one year, then family consumes |
| |10,000 kW-hrs of electricity. |
| |A. |
| |$400 |
| | |
| |B. |
| |$1300 |
| | |
| |C. |
| |$900 |
| | |
| |D. |
| |$500 |
| | |
Correct. The difference in price between the two choices is 5 cents (9 cents minus 4 cents). Over 104kW -hrs of electricity, the cost will be:
104kW -hrs * $0.05 = $500
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |D |
|13. |Which types of plants are best to plant around your home in order to keep sunlight out during summer months, but |
| |allow sunlight in during winter months? |
| |A. |
| |Pine Trees |
| | |
| |B. |
| |Sunflowers |
| | |
| |C. |
| |Deciduous Trees |
| | |
| |D. |
| |Various Shrubs |
| | |
Correct! Deciduous trees are the best choice for maximizing the benefits of solar radiation.� In the summer months, these trees are full of foliage that provides shade from the rays, thus helping to cool the home.� In the winter months, deciduous trees lose their leaves.� This allows solar energy to reach the home, maximizing the benefit. [pic]
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |C |
|14. |Of the three types of heat transfer, which would best describe the warmth felt from a hot, yellow, luminous |
| |campfire from 6 feet away? |
| |A. |
| |Convection |
| | |
| |B. |
| |No heat transfer occurs from a campfire. |
| | |
| |C. |
| |Radiation |
| | |
| |D. |
| |Conduction |
| | |
Correct! Radiation refers to the transfer of heat from one body to another, not in contact with it, by means of wave motion through space. Think about the heat given off from a camp fire.
|[pic|Points Earned: |1/1 |
|] | | |
|Your Response: |C |
