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#3. Heat Transfer Technologies: Outcome B2
By Andrew Wilson
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Last updated over 1 year ago
13 questions
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Question 1
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Question 2
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Question 3
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Question 5
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Question 8
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8. What amount of energy is required to raise 1g of water 10 C?
Give 3-digit answer with the proper unit. Example: 12.3 J
Question 9
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Question 10
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Question 11
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Question 12
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Question 13
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Which material is the most efficient conductor of heat?
gold
glass
wood
plastic
What is the reason radiators and hot air vents are typically located near the bottom of walls in homes and buildings?
Hot air rises
Hot air sinks
Cold air rises
Cold air sinks
Observe the two containers of water shown. Both have the same temperature. How do their respective heat energies compare?
The 1 kg container has twice the heat energy of the 10 kg container.
The 1 kg container has 10 times the heat energy of the 10 kg container.
The 10 kg container has 10 times the heat energy of the 1 kg container.
Both containers possess identical heat energy.
Which of the following would be most effective at transferring heat?
A pan with a copper bottom
A shiny steel pan
A ceramic dish
A glass pan
Why is a sandy beach on a sunny day a lot warmer than the lake water?
Sand has a higher specific heat capacity than water.
Water requires much more energy to heat compared to sand.
There is more sand than water, leading to quicker heating.
Water and sand have the same heating rate, but water starts cooler.
What is the reason most pan handles are made of plastic rather than metal?
Metal is a superior material, but plastic is more cost-effective.
Plastic absorbs more heat compared to metal.
Plastic insulates better than metal.
Metal insulates better than plastic.
Match the term to the definition
Unit for how much energy is spent doing work
Temperature
average of all kinetic energy in an object
specific heat capacity
measure of a substance’s ability to absorb or lose heat
Heat
sum of all kinetic energy in an object
Joule
What metal has a specific heat capacity below 1?
Water
Glass
Iron
Sand
Which container would require more energy to raise its temperature by 10°C?
A 500mL beaker filled with sand
A 500mL beaker filled with air
A 500mL beaker filled with motor oil
A 500mL beaker filled with vegetable oil
For frying french fries in very hot oil, which type of oil should you opt for?
Higher specific heat capacity
Lower specific heat capacity
Neither would affect the cooking of the fries
Why is water commonly used as a coolant in car radiators?
High specific heat capacity of water.
Cost-effectiveness and abundance of water.
Rapid cooling ability of water.
Both A and B
If you have a beaker with 100g of water, approximately how much energy is needed to raise the water temperature by 5°C?
420 J
210 J
2100 J
1000 J
