A circuit in a home provides power to a light fixture. The homeowners want to use a compact fluorescent bulb instead of an incandescent bulb. Compact fluorescent bulbs can produce as much light as incandescent bulbs but with less energy. How is this possible?
Incandescent bulbs produce other forms of energy, too, including heat.
Fluorescent bulbs produce other forms of energy, too, including heat.
Energy is destroyed when it passes through an incandescent bulb.
Fluorescent bulbs have been designed to put out more energy than they receive.
9 answers
The correct answer is: Incandescent bulbs produce other forms of energy, too, including heat.
The batteries of some flashlights can be charged by turning a handle. Which energy transformation is happening in this process?
kinetic to electrical to chemical
kinetic to potential to chemical
kinetic to potential to light
kinetic to electrical to light
kinetic to electrical to chemical
kinetic to potential to chemical
kinetic to potential to light
kinetic to electrical to light
The correct answer is: kinetic to electrical to light
How does the power switch on a computer work?(1 point)
Responses
Turning the switch on activates the power source to allow electrons to flow.
Turning the switch on activates the power source to allow electrons to flow.
Turning the switch on completes the circuit between the power source and the load.
Turning the switch on completes the circuit between the power source and the load.
Turning the switch on causes the conductors to release electrons.
Turning the switch on causes the conductors to release electrons.
Turning the switch on turns on the parts that convert electrical energy to other forms.
Responses
Turning the switch on activates the power source to allow electrons to flow.
Turning the switch on activates the power source to allow electrons to flow.
Turning the switch on completes the circuit between the power source and the load.
Turning the switch on completes the circuit between the power source and the load.
Turning the switch on causes the conductors to release electrons.
Turning the switch on causes the conductors to release electrons.
Turning the switch on turns on the parts that convert electrical energy to other forms.
The correct answer is: Turning the switch on completes the circuit between the power source and the load.
What is chemical energy?
energy due to the jiggling motion of molecules
energy carried by electrical current
energy stored in the bonds between atoms and molecules
energy stored in the bonds between the parts of an atomic nucleus
energy due to the jiggling motion of molecules
energy carried by electrical current
energy stored in the bonds between atoms and molecules
energy stored in the bonds between the parts of an atomic nucleus
The correct answer is: energy stored in the bonds between atoms and molecules
Which energy transformation occurs when you rub your hands together to warm them?
kinetic energy to thermal energy
thermal energy to kinetic energy
kinetic energy to radiant energy
thermal energy to potential energy
kinetic energy to thermal energy
thermal energy to kinetic energy
kinetic energy to radiant energy
thermal energy to potential energy
The correct answer is: kinetic energy to thermal energy.
1 answer