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?
A) Energy is destroyed when it passes through an incandescent bulb.
B) Incandescent bulbs produce other forms of energy, too, including heat..
C) Fluorescent bulbs produce other forms of energy, too, including heat.
D) Fluorescent bulbs have been designed to put out more energy than they receive.
B) 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?
A) kinetic to electrical to chemical
B) kinetic to electrical to light
C) kinetic to potential to light
D) kinetic to potential to chemical
A) kinetic to electrical to chemical
How does the power switch on a computer work?(1 point)
A) Turning the switch on completes the circuit between the power source and the load.
B) Turning the switch on causes the conductors to release electrons.
C) Turning the switch on turns on the parts that convert electrical energy to other forms.
D) Turning the switch on activates the power source to allow electrons to flow.
A) Turning the switch on completes the circuit between the power source and the load.
What is chemical energy?(1 point)
A) energy carried by electrical current
B) energy due to the jiggling motion of molecules
C) energy stored in the bonds between the parts of an atomic nucleus
D) energy stored in the bonds between atoms and molecules
D) energy stored in the bonds between atoms and molecules
Question
Which energy transformation occurs when you rub your hands together to warm them?
A) kinetic energy to radiant energy
B) thermal energy to potential energy
C) thermal energy to kinetic energy
D) kinetic energy to thermal energy