Kinds of Energy
moving electrons from one point to another in a conductor
flashlight
chemical > electrical > light
What is potential energy?
Energy that is stored.
What is kinetic energy?
Energy in motion
What is energy?
The ability to do work
Nuclear energy
Also known as atomic energy; energy stored in the nucleus of an atom
hair dryer
Electrical > thermal
What has more potential energy - a leaf about to fall from a tree of a bowling ball about to be thrown. Explain your answer.
A bowling ball because it has more mass than a leaf.
Where does a rollercoaster have the most KE?
the bottom of the highest drop
What is energy measured in?
Joules
What is thermal energy also called?
heat
iPhone (not plugged in to charge)
chemical > electrical > radiant (light and sound)
Which of the following is an example of potential energy - a rollercoaster at the bottom of a high drop or a car that is sitting in a driveway.
a car that is sitting in a driveway
What two factors determine KE?
Speed and mass
What is the law of conservation of energy?
Energy cannot be created or destroyed, only transformed.
Sound energy
energy in the form of wave motion; vibrations spread, causing other objects to vibrate.
Windmill
mechanical (wind) > mechanical (turn turbine) > mechanical (pump)
What two factors determine PE?
Position and mass
What has more KE - Ms. Seyffert trying to run or a plane flying to Los Angeles. Explain how you know.
a plane flying to Los Angeles because it has more mass, and more speed (Seyffert runs real slow)
What are two kinds of radiant energy?
light and sound
Give two examples of chemical energy
food and a battery
Give an example of electrical energy turning to light energy.
Lights
Explain how gravity affects potential energy.
Describe one kind of KE that is present in the classroom right now.
(various answers)
Name one of the energy transformations that occurred in your Rube Goldberg machine
(various answers)