Energy Transformations
Gravitational → Mechanical
Ball Rolling Downhill
Nuclear → Thermal → Mechanical → Electrical
Nuclear Power Plant
electrical energy
One important use of coal is to produce energy for homes. Coal can be burned and converted to what type of energy?
Chemical → Mechanical
Person Running
The machine changes the form of the electrical energy but cannot create or destroy energy.
W machine converts 40% of electrical energy into mechanical energy and 60% into thermal energy. What statement explains the law of conservation of energy?
radiant, thermal, and mechanical
What are three types of energy that can be transformed by the typical household appliance?
Energy in the log is transformed into heat and light
What describes the energy transformation that takes place when a log is burned in a fireplace?
Mechanical→Electrical
What energy conversion is taking place as the blades of the windmills rotate?
gravitational potential to kinetic
What is the energy transformation that occurs when the first ball is dropped?
sound energy
What type of energy causes windows rattling during a thunderstorm?
Some of the chemical energy is transformed into waste thermal energy.
When you drive a car not all of the chemical energy in gasoline is transformed into useful kinetic energy. What happens to it?
chemical to light
Which type of energy conversion occurs in a flashlight?
Mechanical→Electrical
Wind Turbine Turning
Energy transfer
the first ball taps the second but the last ball moves. What does this activity demonstrate?
Chemical → Electrical → Radiant and Thermal
A Flashlight
Electrical → Radiant and Thermal
A Lamp
Electrical → Thermal and Radiant
A Toaster
kinetic energy converted to potential energy
A hybrid car uses a braking system that charges a battery. What type of energy conversion is this an example of?
chemical→mechanical→heat
A student rapidly rubs the palms of both hands together. Which sequence correctly describes the energy transformations that occur?
Radiant → Electrical → Chemical
Solar Panel Charging a Cell Phone Battery
electrical energy
Solar cells collect energy from the sun and convert it into what type of energy?
Chemical energy
The sound, light,and heat that a firecracker produces are originally stored as which type of energy?
The total energy remains the same as the roller coaster moves.
A roller coaster moves down a hill, potential energy is converted into kinetic energy, thermal energy, and sound energy. What is true about the total energy of this system?
Gravitational → Mechanical → Sound
Books Falling Off a Shelf
Chemical → Thermal → Mechanical → Electrical
Burning Coal to Make Electricity
Chemical → Thermal and Light and Sound
Burning Wood in a Campfire
Chemical → Thermal and Radiant
Burning a Candle
Kinetic → Sound
Playing a Violin
Electrical → Mechanical
What energy transformation takes place when using a power drill?
