Potential Energy & Kinetic Energy 4th Grade Science
chemical potential energy
Energy stored in chemical bonds
kinetic energy
energy of motion
potential energy
energy that is stored or waiting to be used
potential energy
stored energy
elastic potential energy
the energy of stretched or compressed objects
velocity
the rate and direction of change in the position of an object.
collide
to come together with great force
potential energy
When a crane swings a wrecking ball up to a certain height, it gains more __________________ and has the ability to crash through buildings.
kinetic energy
_______________ can also be transferred when objects collide.
kinetic energy
__________________ depends on velocity
kinetic energy
A baseball thrown by a pitcher, although having a small mass, can have a large amount of __________________ due to its fast velocity.
kinetic energy
A car traveling down the road has less ____________________ than a semi-truck traveling at the same speed because the car's mass is much less than the truck's.
kinetic energy
A downhill skier traveling down a hill has a large amount of ___________________ because of their mass and high velocity.
kinetic energy
A golf ball sitting on a tee before it is struck has zero ___________________ because its velocity is zero.
kinetic energy
A river flowing at a certain speed possesses ___________________ because the water has a certain mass and it also has velocity.
potential energy
A rock sitting at the edge of a cliff has _____________. If the rock falls, the _______________ will be converted to kinetic energy.
potential energy
A set of double "A" batteries in a remote control car possess chemical ____________________ which can supply electricity to run the car.
potential energy
A stick of dynamite has chemical ______________________ that would be released when the activation energy from the fuse comes into contact with the chemicals.
potential energy
A stretched spring in a pinball machine has elastic ____________________ and can move the steel ball when released.
kinetic energy
An airplane has a large amount of _______________ in flight due to its large mass and fast velocity.
kinetic energy
An asteroid falling to earth at incredible speeds has an enormous amount of ___________________.
kinetic energy
An insect flying has a small amount of ___________________ because its mass and velocity are relatively small.
kinetic energy
More mass equals more _________________
potential energy
The food we eat has chemical ____________________ because as our body digests it, it provides us with energy for basic metabolism.
potential energy
Tree branches high up in a tree have __________________ because they can fall to the ground.