Light
What are solar cells?
Devices that use light from the sun to produce electricity.
Sound waves cannot travel through _____________.
space
Which type of thermal energy transfer would be occurring when your feet touch hot sand?
Conduction
What is an insulator?
A material that slows or stops the flow of energy.
What is another word for stored energy?
what is another word for energy of motion?
Potential energy
Kinetic energy
List three items in your house that are light sources?
lamp, computer, laptop, tv, flashlight, etc.
How does sound energy travel?
In waves
Which type of thermal energy transfer would be occurring when heating liquid on a stove?
Convection
What is a conductor?
A material through which electricity flows easily.
A pom-pom launcher transforms stored energy to ________________________.
Energy of motion or Kinetic energy
Light travels in a ______________ path.
straight
Why are sounds not heard in space?
Space is a vacuum with few particles to travel through.
Which is the best type of thermal conductor....wood, plastic, or aluminum?
aluminum
The path along which electrical current can flow is called a _________________.
circuit
When two marbles hit one another, what type of energy transfer or transformation would occur?
Kinetic energy transfer to Kinetic energy
Kinetic energy transform to sound energy
How does a light in a fish tank keep fish warm?
The light transfers energy to the water, to the plants, and increases the temperature of the water.
Dolphins communicate using special vibrations and sounds. How is this possible?
The energy is transferred from one dolphin to another through sound.
How does heat travel from the sun to Earth?
Radiation
What is needed in order for a circuit to work?
battery, source of electricity, wire
What is the difference between an energy transfer and energy transformation?
An energy transfer changes objects but not types of energy. An energy transformation changes types of energy.
How is ight energy different from sound energy?
Light does not need a medium (object) to travel.
When a student plays a guitar, how does the sound travel to reach your ears?
Through sound energy
How do particles move in liquid as you make the temperature warmer?
The particles move faster.
What do you call an object in an electrical circuit that resists the flow of energy?
A resistor
How does a dropped ball transform energy?
Back and forth from potential to kinetic energy.