Types of Energy and Energy Transformations
What energy transformation occurs as a match burns?
Chemical energy transforms into thermal and kinetic energy and potential energy transforms into kinetic energy.
What will happen to the gravitational potential energy of a rock as it moves down a hill during a landslide?
It will decrease.
The energy that is carried through power lines is ____________.
electrical
When a digital clock is plugged into a wall outlet, the clock lights up with a time display. What king of energy transformation takes place?
electrical energy to light energy
When a log is burned, what is produced that is not a form of energy?
smoke
When you eat a candy bar which of the following would be true?
the energy is converted to heat.
A ball rolling on a flat surface eventually stops because its kinetic energy:
transfers to the air and floor as heat
Which of the following has the greatest kinetic energy?
wind
If the wind blows the windmill blades, how is energy converted?
wind energy is converted into mechanical energy
Stored energy is also known as ________ energy.
potential
Energy that travels from the sun to the Earth is ______________.
radiant
When water is released from a dam, what happens?
Potential energy is transformed to kinetic energy
A yo-yo does not continue to go up and down forever. If energy is not destroyed, what causes the yo-yo to stop?
Some energy is lost to friction
Which of the following is an example of kinetic energy being transformed into gravitational potential energy?
a person climbing a ladder
Which of the following is an example of potential energy?
a ripe appe
Which of the following devices could be used to measure a change in kinetic energy?
a ruler, a speedometer, a thermometer
A mountain climber starts at the base of a mountain, climbs all the way to the peak, and then climbs back down to the base of the mountain. At which point is the climber's gravitational potential energy the greatest?
at the peak
The law of conservation of energy states that energy:
cannot be created or destroyed
A lump of coal is an example of what kind of potential energy?
chemical
Food is an example of what kind of potential energy?
chemical
When you recharge your cell phone you plug it into an electrical outlet for some time. The electrical energy is stored in the phone's battery as __________ energy until you are ready to use the phone.
chemical
A battery stores electrical energy in what form?
chemical energy
What kind of energy transformation takes place in an operating battery powered flashlight?
chemical to light and heat
A rubber ball falls vertically bounces off a concrete floor. Just as the ball begins to bounce up, all of its energy is kinetic. According to the law of conservation of energy, what forms of energy will this kinetic energy convert to?
gravitational potential energy, thermal energy, sound energy
When gasoline burs, stored chemical energy is released in two forms: light and __________.
heat
When roasting a marshmallow over a campfire, which energy transfer is taking place?
heat energy is transferred from the fire to the object
When you swing a bat and hit a baseball, the ball flies into the outfield. What happens to the energy you used to swing the bat?
it is transferred to the baseball
A cup of hot tea has a lot of kinetic energy. Where does that kinetic energy go as the tea cools?
it is transformed to the air.
A falling object has which type of energy?
kinetic
Which forms of energy increase as a rocket blasts off?
kinetic and thermal energy
Fireflies are insects that transform chemical energy into ______________ energy.
light
When you stretch a rubber band, you are storing ________ energy.
machanical
Which two factors can be used to calculate kinetic energy?
mass and velocity
A wind turbine produces electricity from what kind of energy?
mechanical
