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energy not created and not disappearing
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∙ 12y ago
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Friction changes the useful work of a machine into mechanical energy true or false?
true
Is it true or false that a gas absorbs energy as it changes into a liquid?
False. It loses energy.
When electrical energy is converted into thermal energy what must be true?
The total amount of thermal energy plus chemical energy changes.
Which energy source is most affected by changes in the weather?
This is true of several energy sources - especially solar energy, and wind energy.
Is it true that when energy changes form some energy is always lost as sound?
No not always necessarily, when energy changes form it usually is lost in the form of heat.
True or false when ice changes to a liquid it asorbs energy?
true, when ice changes to a liquid it asorbs heat energy .
A generator changes mechanical energy to what?
Electrical Energy
Is it true that energy changes only take place involved with chemical changes?
Yes Energy Kills you stay away from it
Friction changes the useful work of a machine into mechanical energy true or false?
true
Is it true or false that a gas absorbs energy as it changes into a liquid?
False. It loses energy.
When electrical energy is converted into thermal energy what must be true?
The total amount of thermal energy plus chemical energy changes.
Which energy source is most affected by changes in the weather?
This is true of several energy sources - especially solar energy, and wind energy.
Is it true that when energy changes form some energy is always lost as sound?
No not always necessarily, when energy changes form it usually is lost in the form of heat.
Electron X can change to a higher energy level or a lower energy level Which statement is true of electron X?
Electron X absorbs energy when it changes to a higher energy level. Electron X absorbs energy when it changes to a higher energy level. It takes energy to do that.
What changes chemical energy to energy?
The mitochondria changes food energy to chemical energy.
What changes mechanical energy to energy?
A generator changes mechanical energy into electrical energy.
What changes food energy to chemical energy?
The mitochondria changes food energy to chemical energy.
