Energy Flashcards
Understand the difference between potential and kinetic energy and be able to give examples.
Energy waiting to be used is?
potential energy
Energy of motion is?
kinetic energy
When you are walking down the hall is this kinetic or potential energy?
kinetic
At which point does a roller coaster have the greatest amount of potential energy?
at the top of the hill
At which point does a roller coaster have the greatest amount of kinetic energy?
at the bottom of the hill
What kind of energy does an apple have as it sits in your lunch box waiting to be eaten?
potential
As you are eating your apple, is the energy changing from potential to kinetic or kinetic to potential?
potential to kinetic
Why does a hill on a roller coaster have to be smaller than the hill before it?
So that it has enough energy to allow the car to go up the next hill. If the first hill is smaller than the second it will not give the car enough energy to make it up the bigger hill.
What happens to a ball that you throw in the air BEFORE it comes down?
it stops and then changes direction
As an object slows down, is it gaining potential or kinetic energy?
Potential energy
If a radio is plugged in but not turned on, does the radio have potential energy?
Yes, there is electrical energy available and waiting to be used.
When you throw a ball straight up in the air what force is pulling the ball down?
Gravity is pulling the ball down.
Where is the maximum potential energy when a runner is starting a race?
The most energy available is had at the beginning of the race at the starting line.
Consider a wind up toy: you wind the toy and then release the wind up handle and the toy moves. Where is the potential energy? Where is the kinetic energy?
The potential energy is in the wound up toy and the kinetic energy is in the moving toy.
Which involves electric kinetic energy: a fan that is blowing or a flag blowing in the wind?
The blowing fan is running on electrical energy.
