True or false : kinetic energy produced from the hair dryer is wasted energy
False ( sound energy is wasted energy)
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15
True or false : energy may be destroyed inside different devices
False
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15
Arrange the energy chain in the mobile phone :
1 sun 2 cutting trees 3 coal 4 electric power stations 5 battery in the mobile 6 light and sound
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15
What is meant by : Law of conservation of energy
Energy cannot be created or destroyed, but it can change from one form to another.
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15
Write the scientefic term : energy stored in the batteries
Chemical energy
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fairy
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baam
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15
Complete : energy chains start with - - - - - -
The sun
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Complete : solar panels change - - - - - ( energy to - - - - energy
Solar energy to electric energy
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15
Arrange the energy chain in the picture :
1 solar energy 2 chemical energy 3 kinetic energy
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15
Which of the following statements is correct? a. Energy can't be changed from one form to another. b. Energy can be changed from one form to another. c. Energy may be lost or destroyed. d. Energy can be created.
B
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15
Wtite the scientefic term : Energy produced due to friction
Thermal energy
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What happens if : you turns on an electric fan ( according to the change of energy)
Electric energy will change ti kinetic and sound energy
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gift
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banana
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The most famous robot sent to Mars is called - - - - - - - -
