Lesson 1
the amount of kinetic energy in an object depends on these 2 factors
What are mass and speed?
energy changing form
What is an energy transformation?
The ability to do work or cause change
What is energy?
the energy that an electric current carries
What is electric energy?
the transfer of energy that occurs when a force makes an object move
What is work?
3 types of potenial energy
What are chemical potential energy, gravitational potential energy, and elastic potential energy?
A bicycle at the top of a hill has more __________ energy than __________ energy.
potential, kinetic
energy due to motion
What is kinetic energy?
Energy caused by an object's vibrations and carried by sound waves
What is sound energy?
Energy stored in the nucleus of an atom
What is nuclear energy?
name an example of potential and kinetic energy
potential-any object that is not moving and has stored energy: nonmoving car or book on a shelf
kinetic-any moving object: someone jumping or a kite flying
law of conservation of energy states that energy can be:
What is transferred and transformed?
stored energy due to the interactions between objects or particles
What is potential energy?
sum of the potential energy and kinetic energy in a system of objects
What is mechanical energy?
the amount of gravitational potential energy depends on these 2 factors
What are mass and position?
give an example of gravitational potential energy
What is a ball dropping or anything that gravity is pulling down?
Give an example of friction.
brake pads, tires against a road, or rubbing hands together
the resistance that one surface or object encounters when moving over another
What is friction?
energy carried by an electromagnetic wave
What is radiant energy?
law of conservation of energy states that energy can't be:
What is created or destroyed?
give an example of chemical potential energy
What is the food we eat and a firecracker before it explodes?
Name a real world example of an energy transformation from electric energy to sound energy.
What is a radio?
the law that states that energy cannot be created or destroyed but can be changed from one form to another
What is the law of conservation of energy?
The total energy of all the particles that make up an object
What is thermal energy?
2 ways to reduce friction
What are oil and water?