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WorksheetsTX Science Fusion Unit 5 Test Review
Total questions: 27
Worksheet time: 17mins
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
Which of the following materials is a conductor?
a paper clip
a rubber band
a plastic ruler
a toothpick
Based on what you can infer from Hector's data, which material should he choose as a conductor?
aluminum
foam
plastic
silver
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
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.
Where should the word conductor be written on the drawing?
on the plastic outlet face
on the rubber electrical cord
on the metal prongs
on the ceramic outlet cover
Which word best describes the metal disk?
motor
engine
electromagnet
battery
All homeowners should consider insulating their homes with foam.
Foam and fiberglass do about the same job of insulating.
Foam insulation is better than fiberglass insulation.
It is difficult to insulate a home.
Which of the following careers helps homeowners improve energy efficiency in their homes by improving the home's wiring?
line worker
custodian
civil engineer
electrician
Which of the following describes how people can make informed choices about the use and conservation of natural resources?
Allow the water to run when washing dishes to save wear and tear on the faucet.
Leave the lights on at all times instead of turning them off and on.
Ride in a car instead of riding a bicycle.
Recycle glass, cans, and newspapers.
Which statement explains the problem with her circuit?
The paper clip stops the electric current.
The light bulb uses the electric current.
The circuit is not a complete loop.
The circuit lacks an energy source.
An electric circuit that has more than one path for the elctric charges to follow is a(n) ___________________.
series circuit
parallel circuit
open circuit
closed circuit
A device that produces an electric current by converting mechanical energy to electrical energy is a(n) ______________.
conductor
magnet
electric motor
generator
A material that resists the movement of electricity through it is called a(n) _____________.
conductor
insulator
magnet
circuit
A material through which electrical energy travels easily is a(n) __________________.
generator
insulator
electric motor
conductor
A device that changes electrical energy into mechanical energy is a(n) _____________________.
electric motor
conductor
insulator
circuit
An object that attracts iron and a few other metals is called a(n) _______________________.
circuit
parallel circuit
magnet
closed circuit
A closed path along which electric charges flow is called a(n) ______________________.
conductor
circuit
series circuit
insulator
Which setup would light the bulb?
A
B
C
D
Dams are a source of mechanical energy to generate electricity. Which natural resource provides energy for a dam?
coal
solar
water
wind
When Tony left the room, he flipped the light switch. The light turned off. Which conclusion can you draw about what caused the light to go off?
The tiny wires inside the bulb stopped moving, so it could not make light.
The circuit was broken, so the electric current had no path to follow.
The bulb became cooler, so the light bulb stopped changing heat energy into light.
The electric current stopped, so light could not be changed into electrical energy.
Which of these is a parallel circuit? (You will need to understand what that means)
A
B
