1. Answer the following in not more than 20 words,
1. Give one example to show that heat is a form ofa form of energy
2. What is temperature? Name the scales used to measure it?
3. If the hotness or coldness of a body is relative, how do we measure its degree of hotness?
4. Mention three changes that heat causes in substances?
5. A steel spoon dipped in a pot of boiling soup for a few minutes becomes too hot to touch. How does heat travel through the spoon?
6. How is it that we can hold a match while it is burning?
7. How does turning on a heater in a room make the whole room warm?
8. How does heat from the sun reach the earth?
9. Mention one similarity between heat and light.
10. When two bodies are in contact, heat flows from the hotter to the colder body. When does heat
stop flowing?
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Answer:
1.because heat transfer from hot body to cold body
2.measure of the ability of heat energy is known as temperature. scales: celsius, Fahrenheit,and so on
3.with thermometer
4.rice loses heat after some time, coffee loses heat after some time,tea loses heat after some time
5.through molecules
6. Because it's an insulator
7.transfer of heat
8.through vacuum
9.both are two types of energy
10.when heat all transfers
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