TX Science Fusion Unit 5 Test Review

What is an electric current?

• the flow of charged particles

• an open circuit

• a copper wire

• a battery

What materials are needed to make an electromagnet?

• magnet, nylon thread, switch

• copper wire, iron nail, battery

• an energy source, wire, magnet

• lead nail, plastic cord, battery

Which of the following careers includes a thorough understanding of electricity and circuits?

• chemical engineer

• environmentalist

• chemist

• electrical engineer

Tags

NGSS.HS-PS2-5

Which of the following materials is a conductor?

• a paper clip

• a rubber band

• a plastic ruler

• a toothpick

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Based on what you can infer from Hector's data, which material should he choose as a conductor?

• aluminum

• foam

• plastic

• silver

Tags

NGSS.MS-PS2-3

Which of these makes an informed choice in the use and conservation of natural resources used to generate electricity?

• Cool the house by leaving the refrigerator door open instead of using an air conditioner.

• Turn off lights in a room when you leave it or when the lights are not needed.

• Replace compact fluorescent light bulbs with incandescent light bulbs.

• Turn down the television sound so it is not so loud.

What is the purpose of the battery in the circuit?

• to slow the flow of electricity

• to provide a source of energy

• to connect the components

• to use the electric current

Tags

NGSS.4-PS3-2

Chris has a circuit made up of a battery, a light bulb, some wires, and a metal rod as a switch. He wants to explore the electromagnetic field so he replaces the metal rod with a wooden rod. When Chris closes the new switch, what will he observe?

• brighter bulb

• warmer bulb

• flashing bulb

• unlit bulb

Sarah wants to convert electrical energy into a different form of energy. She builds a device by wrapping a ling piece of copper wire around a nail and attaching both end of the wire to a battery. What has she made?

• electric generator

• electric motor

• electromagnet

• electric switch

What will happen if the switch is closed?

• Charges will stop flowing.

• Bulbs A, B, and C will light up.

• Bulbs A, B, and C will go out.

• The battery will recharge.