Vocab
KINETIC ENERGY
energy in motion
A spring in a pinball machine before it is released
PE
Mechanical (motion) energy
...
When an object is moving, what causes some of its kinetic energy to be transformed to thermal energy?
Friction
Explain how you could increase the potential energy of an object.
make the mass bigger or increase the height of the object
MASS AND HEIGHT!
POTENTIAL ENERGY
energy stored
Water flowing from a waterfall before it hits the pond below
KE
Chemical energy
food and batteries
What kind of energy transfer occurs in a toaster?
electrical energy to thermal energy
Why do circuits need to maintain a closed loop?
to allow electric current to flow and power devices
ENERGY
to do work
Gasoline in a storage tank
PE
Radiant energy
visible light (from the sun),phone, i-pad, microwave
Two factors that affect an object's kinetic energy are __________ and __________.
mass and speed
Explain how energy is transformed in a spring.
KE as you pull the spring back. PE as you hold the spring still. KE as you release the spring.