Types of Energy
A roller coaster sitting at the top of the track has this type of energy
Potential energy
Why would a roller coaster not run forever?
The kinetic is given off as heat and sound
True or False, A beaker of ice water has no thermal energy
False
What type of energy does the sun give off?
Solar or Radiant or electromagnetic
True or false, A snowy mountain has a higher temperature than a cup of coffee
False
The sum of potential and kinetic energy.
Mechanical
Describe the energy transformations in using a battery powered lantern.
Chemical to electrical to light
Is there any matter that is completely still?
No
What is energy?
The ability to do work or make a change
Heat will always transfer from the ___________ object to the __________ object
warmer, colder
The type of energy found in batteries and food
What is the law of conservation of energy?
Energy cannot be created or destroyed, only transformed.
The average kinetic energy of particles is called what?
Temperature
Kinetic
True of False, a mountain has a higher thermal energy than a cup of hot coffee
True
The type of energy given off by a cell phone ( at least 2)
Sound, heat, light
conduction
The total kinetic energy of particles is called what?
Thermal energy
The atoms/molecules/matter in a substance will ____________ when heated.
Speed up
Water is a liquid at room temp but a gas when heated. What does that tell you about heating (or cooling) a substance?
It can change the state (physical change)
What causes a skateboarder to slow down?
friction, losing heat and sound energy
The sun melting a chocolate bar is what type of heat transfer?
Radiation
Is there heat between two objects of the exact same temperature?
No
What type of energy powers a cell phone (that is not currently plugged in)?
Chemical
Why does ice feel cold in your hand?
Because it is at a lower temperature and thermal energy from your hand is transferring to the table