Which of the following statements does not correctly describe energy? (4.P.3.1)
A. Energy can be touched.
Why is sound a form of energy? (4.P.3.1)
A. Sound waves carry energy that can cause motion or create change.
In 1820, a scientist discovered that the points of a compass moved when he turned on a nearby electric circuit. What did this discovery show? (4.P.3.1)
B. Electricity flowing through a circuit produces magnetic effects in the wires which causes motion.
Which of the following items transfers electrical energy into sound energy?
B. doorbell
Which of the following items transfers electrical energy into light and heat energy? (4.P.3.1)
D. light bulb
Heat and magnetism are two forms of _____ because they can cause change or create motion. (4.P.3.1)
B. energy
Energy is changed from one form to another during an energy transfer. Which of the following examples describe the transfer of electrical energy into another form of energy? (4.P.3.1)
D. All of these examples describe a transfer of energy.