A ball rolled up a hill has the same amount of total energy at the bottom of the hill as it does when it gets to the top of the hill.

A book dropped from a person's hand has the same amount of potential energy in the person's hand as it does on the ground.

A chemical is burned, and its energy is not lost but instead released into another form.

A metal cord carrying electrical energy transforms that energy into heat energy.

It will have the same total energy just before impact as when it was released.

Its potential energy will be destroyed once it is released from the bow.

Its kinetic energy will be destroyed once it reaches the target.

It will create new energy when it strikes the target.

Fast moving particles in warm objects collide with electromagnetic waves.

Objects generate electromagnetic waves are carried away from the object emitting them.

Fast-moving particles collide with slower moving particles transferring their heat energy.

Particles expand with thermal energy, hot air rises and pushes cooler air down through circulation.

Experiment: A rubber balloon is secured to the top of a flask. The flask is placed in a cold ice bath. The balloon is observed over the next ten minutes.

Evidence: The balloon would expand as the air in the flask expands

Experiment: A rubber balloon is secured to the top of a flask. The flask is placed on a hot plate and heated on low. The balloon is observed over the next ten minutes.

Evidence: The balloon would expand as the air in the flask expands.

Experiment: A flask is placed into a cold ice bath. After the flask has cooled to 32°F, a balloon is secured to the top of the flask. The balloon is observed over the next ten minutes.

Evidence: The balloon would be sucked into the flask as the air in the flask contracts.

Experiment: A flask is placed in a warm water bath that is kept at a constant temperature of 150°F. After the flask has warmed to 150°F, a balloon is secured to the top of the flask. The balloon is observed over the next ten minutes.

Evidence: The balloon would expand as the air in the flask expands