FSQ 10 Electricity Review

Which material is the best conductor of electricity among the following?

• Aluminum

• Rubber

• Glass

• Paper

Which of the following correctly describes one of the energy transfers that happens when a hair dryer is turned on?

• Electrical energy is changed into heat energy, which makes the fan in the hair dryer move.

• Mechanical energy is changed into heat energy, which makes the fan in the hair dryer move.

• Thermal energy is changed into mechanical energy, which makes the fan in the hair dryer move.

• Electrical energy is changed into mechanical energy, which makes the fan in the hair dryer move.

Harper and Anika are playing with two baseballs of the same size and mass. Harper's baseball is still and Anika's baseball is rolling. Anika's ball hits Harper's ball, and Harper's ball starts moving. Why does Harper's baseball start moving?

• Harper's ball is repelled by Anika's ball.

• Anika's ball is attracted to Harper's ball.

• Anika's ball transfers energy to Harper's ball.

• Harper's ball transfers energy to Anika's ball.

Evelyn is setting up a basic electrical circuit for her science project. Which of the following statements is true about her circuit?

• No electricity will flow through a circuit without a light.

• Electricity will flow through a circuit without a source of energy.

• No electricity will flow through a circuit that has an open switch.

• Electricity will flow through a circuit that forms an incomplete loop.

Why is Luna's hair standing up when she takes off her hat?

• Her hair has the same charge as the hat.

• Her hair is transferring charges to the hat.

• The hat and strands of hair have opposite charges.

• The strands of hair are transferring charges to each other.

Blake plays a string on his guitar, and he hears a high-pitched sound. Which of the following statements describes what most likely happened to produce the sound that Blake heard?

• The string that was played must have broken.

• One string must have vibrated slowly to produce the sound.

• One string must have vibrated quickly to produce the sound.

• Two or more strings must have vibrated together to produce the sound.

Aubrey constructs a circuit to power a light bulb. The circuit consists of a light bulb, a battery, aluminum wire, and a switch. After assembling the circuit, Aubrey notices that the bulb does not illuminate. Which statement is NOT a possible reason for the bulb's failure to light?

• The battery is dead.

• The switch is closed.

• The light bulb is not properly connected.

• The switch is open

What forms of energy are produced when playing a drum?

• light and sound

• sound and mechanical

• electrical and mechanical

• chemical and mechanical

What energy transformation occurs in an oven?

• Heat to sound

• Electrical to heat

• Heat to electrical

• Sound to mechanical

Ethan plugs headphones into his iPhone to listen to a song. Which of the following best describes the energy transformation that occurs from the phone to the Ethan's headphones?

• mechanical to light

• sound to electrical

• electrical to sound

• electrical to light