Practice Modes Of Heat Transfer (3.5) - Heat

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9 questions

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6 sample questions

Question 1.
Define conduction in your own words.
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Think about how a spoon gets hot in soup.
Question 2.
Give an example of convection.
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Consider heating a room.
3Question 3.
What is conduction?
- Heat transfer with movement of particles
- Heat transfer through direct contact
- Heat transfer through waves
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Remember the spoon in hot soup.
4Question 4.
True or False: Convection occurs only in solids.
- True
- False
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Think about how hot air rises.
Question 5.
If a metal rod ends at temperature 100°C and the other end at 25°C, how long will it take for the entire rod to reach uniform temperature given that it has a length of 1 meter and a thermal conductivity of 45 W/mK?
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Consider using the formula to find out.
Question 6.
A room has a constant heat supply of 2000 J/s, and the air can lose heat through convection and radiation at a rate of 1000 J/s. How would this affect the room temperature over an hour if other factors remain constant?
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Think about the total heat absorbed in one hour.

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