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Energy!
What kinds of energy are there?
What kinds of energy are there?
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Electric
Kinetic
Potential
Solar
Nuclear
Chemical
???
What has energy?
What has energy?
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Energy drinks?
People?
Batteries?
Gasoline?
But What IS Energy?
But What IS Energy?
• Energy is the ability to make something
happen or change.
• We can measure energy.
• There are different types.
• Things have energy.
• Energy can change forms.
• Energy can move.
• But what IS it???
Why we drill for oil…
http://www.youtube.com/watch?v=Kr_xiusqtUM
• What kinds of energy are being transformed in
this car engine?
How Solar Cells Work
http://www.youtube.com/watch?v=x2zjdtxrisc
• What kinds of energy are being transformed in
this solar cell?
What is electricity?
How do we measure electricity?
Voltage
• Voltage is the force pushing electrons in a circuit.
• Which waterfall will push on your head the most?
Current
• Current is a measure of how many electrons are
passing by each second.
• Which circuit will have more current?
How to measure voltage and current
• Voltage under 20V
Current under 10A