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Question 1 of 15
1. Question
Energy comes from different sources. What is the most important source of energy for the earth?
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Question 2 of 15
2. Question
Energy can change from one to another. ______________ use the sun’s energy to make food, they change light energy from the Sun to energy that stored in food.
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Question 3 of 15
3. Question
__________ change light energy to electrical energy.
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Question 4 of 15
4. Question
_______________ change stored energy to electrical energy.
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Question 5 of 15
5. Question
Wind turbine change movement energy from the wind to __________.
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Question 6 of 15
6. Question
Electrical fans change electrical energy to _______________.
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Question 7 of 15
7. Question
Heat source can be obtained from friction, burning and electricity but the __________ is the main source of heat.
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Question 8 of 15
8. Question
_______________ is a measure of how hot or cold something is.
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Question 9 of 15
9. Question
Hot objects have have high temperature and cold objects have low temperature. Temperature is commonly measured in _____________.
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Question 10 of 15
10. Question
What instrument do we use to measure temperature?
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Question 11 of 15
11. Question
The boiling point of water is 100 °C, and the freezing point of water is ___________ °C.
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Question 12 of 15
12. Question
Clinical thermometers is used for to measure body temperature. What are the average living human body temperature?
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Question 13 of 15
13. Question
Heat always flow from a hotter to a colder region.
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Question 14 of 15
14. Question
Which pin or thumb tax will be released first? Is it A, B or C?
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Question 15 of 15
15. Question
Fill in the Blank with the Correct Answer
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On the diagram shown, it shows that the object heated has a good .
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