Thermal energy
What is thermal energy.
The kinetic energy of molecules hitting each other.
When a ball is rolling down a hill where is its kinetic energy greatest?
At the bottom
When a ball is rolling down a hill where is its potential energy greatest.
At the top
What type of heating is a lava lamp?
Convection.
If molecules in two equal sized objects are moving around and the object on the rights molecules are moving faster which object has more thermal energy?
The object on the right.
Why does a Newtons Cradle work?
The potential energy from the first ball is converted into kinetic energy and is transferred through the other balls and then repeats from the other end.
What is an example of potential energy?
Batteries, water in a dam, a yoyo, etc
What type of heating is eggs on a pan?
Conduction
If there are four objects that are the same temperature but one is twice as large will it have twice as much total thermal energy or twice as less total thermal energy.
Twice as much.
Why is a perpetual motion machine impossible?
It is impossible because the kinetic energy needed to make it perpetually move would turn into thermal energy because of friction.
What is potential energy?
It is the stored or unused energy of an object
Radiation.