from racecars to l ightbulbs : where does energy come from?
Post on 24-Feb-2016
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From Racecars To Lightbulbs:Where does energy come from?
We can get energy from many things
OilOil
Why is energy important?Hello! I am
energy!
I am all around, all the time
even though you can’t see
me.
Everything has energy in it. It’s what
makes things move faster, or feel really
hot, or shine brightly.
Here, let me show you.
First, let me show you what happens when I add energy
to this bouncy ball.
You see, the energy is causing the ball to bounce.
Don’t worry, energy cannot be destroyed. It can only be changed
from one form to another. By hitting the other ball, I changed from
bouncing energy to rolling.
Now, let me show you what else I can
do.
Here is one last trick.
I’m still here. I moved from the rolling ball to this windmill, and
caused it to start spinning. Spinning the windmill changed
me into electrical energy, so now I am able to power this light bulb
and create light.
Stored energy is used
Building Our Racecar!
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