What is the difference between heat and thermal energy?
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2. What are three ways that heat can be transferred?
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3. What was one example Dr. Jeff gave for Conduction? How was the heat transferred?
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4. Which has greater heat capacity—iron, tin, or bismuth? Why do you say this?
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5. What is being measured when we take the temperature of something?
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6. What was one example Dr. Jeff gave for Convection? How was the heat transferred?
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7. What was one example Dr. Jeff gave for Radiation? How was the heat transferred?
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8. What are some real-world examples of how we use our understanding of heat to solve a problem?
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1. The difference between heat and thermal energy is that heat is the transfer of thermal energy from one object to another due to a difference in temperature. Thermal energy, on the other hand, is the energy that an object possesses due to the random motion of its particles.
2. The three ways that heat can be transferred are through conduction, convection, and radiation.
3. One example Dr. Jeff gave for conduction was a spoon in hot soup. The heat was transferred from the hot soup to the spoon by direct contact.
4. It is difficult to determine which has greater heat capacity without specific values. However, in general, bismuth has a lower heat capacity compared to iron and tin. This is because heat capacity is related to the amount of energy required to raise the temperature of a substance, and bismuth has a lower atomic mass compared to iron and tin.
5. When we take the temperature of something, we measure the average kinetic energy of the particles in the object. Temperature is a measure of the hotness or coldness of an object.
6. One example Dr. Jeff gave for convection was a pot of boiling water. The heat was transferred from the bottom of the pot to the water through the movement of the hot water rising and the cooler water sinking.
7. One example Dr. Jeff gave for radiation was sitting near a campfire. The heat was transferred from the fire to the person through electromagnetic waves, without the need for any physical contact or a medium.
8. Some real-world examples of how we use our understanding of heat to solve problems include designing energy-efficient buildings, developing cooling systems for electronics, and improving insulation to reduce heat loss in homes. Additionally, heat is essential in various industrial processes such as metal casting, food processing, and chemical reactions.