Energy Transfer: Motion
True or False
Energy can move from one object to another when they touch.
True
What role does energy play in sound?
-Sound waves have nothing to do with energy.
-Energy is present in high-pitched sounds but not in low-pitched sounds.
-Energy is present in loud sounds only.
-Sounds waves carry energy
Sound waves carry energy
True or False
Thermal energy is another word for heat energy.
True
True or False
Electrical energy is the energy that moves through wires to power things like lights and fans.
True
True or False
Electricity moves through wires in a flow called an electrical current.
True
When you push a toy car and it starts to move, what type of energy causes the car to move?
a. light energy
b. mechanical energy
c. sound energy
d. thermal energy
When a deer ran out in front of his car, Peter honked the horn. What kind of energy did the horn produce?
Sound Energy
Which of the following materials is a good conductor of heat?
A) Plastic spoon
B) Wooden stick
C) Metal spoon
D) Rubber band
C) Metal spoon
Which material allows electricity to flow easily?
A) Rubber
B) Wood
C) Metal
D) Plastic
C) Metal
Which of the following is needed for an electrical current to flow?
A) A battery
B) A wire
C) A complete path (circuit)
D) All of the above
D) All of the above
When two marbles collide, what happens to their energy?
A) The energy disappears.
B) The marbles share energy through contact.
C) The marbles create new energy.
D) Only one marble keeps all the energy.
B) The marbles share energy through contact.
If the volume of a radio is turned up, someone sitting nearby is most likely to:
feel the vibrations
feel the thermal energy
feel the magnetism see the light energy
feel the vibrations
A metal pan on a stove becomes hot because—
A) Metal absorbs sound
B) Metal blocks heat transfer
C) Heat energy moves through the metal
D) The pan creates its own heat
C) Heat energy moves through the metal
Materials that do not let electricity flow easily are called ________.
Insulators
Which type of circuit will make a light bulb light up?
A) Open circuit
B) Closed circuit
C) Broken circuit
D) None of the above
B) Closed circuit
Which of the following is an example of energy transfer causing motion?
A) A flashlight shining light
B) A fan spinning after being turned on
C) An oven heating up
D) A radio making sound
B) A fan spinning after being turned on
When you drop a rock into a pond, you see ripples move outward. What do those ripples show?
A) The pond is making light
B) Energy is transferring through water
C) The rock is floating
D) The water is heating up
B) Energy is transferring through water
Which material would be best to keep your drink cold?
A) Aluminum can
B) Glass cup
C) Plastic cup
D) Styrofoam cup
D) Styrofoam cup
Which part of an electric cord is a conductor?
A) The rubber covering
B) The metal wires inside
C) The plastic plug
D) The outer cloth wrapping
B) The metal wires inside
If a wire in a circuit breaks, what happens to the light bulb?
A) It shines brighter
B) It keeps working
C) It turns off
D) It changes color
C) It turns off
A student rolls a ball up a ramp. As the ball rolls up, it slows down and stops. What happens to the energy?
A) The ball loses all its energy.
B) The energy transfers into the ramp.
C) The energy changes form, such as into heat or potential energy.
D) The energy disappears.
C) The energy changes form, such as into heat or potential energy.
How does sound travel from a guitar to your ear?
A) The guitar makes light waves that you see.
B) The guitar sends energy through air as sound waves.
C) The guitar transfers energy only through strings.
D) The guitar pushes air without using waves.
B) The guitar sends energy through air as sound waves.
A student wraps a metal water bottle with a cloth and leaves another bottle uncovered. After 10 minutes in the sun, which will stay cooler and why?
A) The uncovered bottle, because metal cools faster
B) The wrapped bottle, because the cloth acts as an insulator
C) Both will stay the same
D) The uncovered one, because it absorbs less light
B) The wrapped bottle, because the cloth acts as an insulator
A student builds a circuit with a battery, wires, and a light bulb. The light doesn’t turn on until the student replaces a rubber wire with a copper one. What does this show?
A) Rubber is a better conductor than copper
B) Copper is an insulator
C) Electricity only flows through conductors
D) Circuits don’t need conductors
C) Electricity only flows through conductors
A student builds a circuit with two light bulbs. Only one bulb lights up. What could be the problem?
A) The bulbs are in series and the circuit is broken at one bulb
B) The battery is too strong
C) Electricity does not flow through wires
D) The bulbs are too close together
A) The bulbs are in series and the circuit is broken at one bulb