Electricity And Magnetism Pre-assessment
15 Questions
| Total Attempts: 644
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Pre-assessment for electricity and magnetism unit for 4th grade.
Questions and Answers
- 1.Lightning is a discharge of
- A.
Magnetic field
- B.
Direct curent
- C.
Static electricity
- D.
Chemical energy
- 2.A complete path through which electricity flows is a(n)
- A.
Circuit
- B.
Series
- C.
Cell
- D.
Fuse
- 3.The plastic around an electrical wire that keeps you from getting a shock is an example of a(n)
- A.
Conductor
- B.
Fuse
- C.
Insulator
- D.
Circuit breaker
- 4.A thin wire strip that melts easily to keep too much electric current from flowing through wires is a(n)
- A.
Insulator
- B.
Overload
- C.
Fuse
- D.
Circuit
- 5.To make light, a flashlight needs a bulb, a switch, and a(n)
- A.
Parallel
- B.
Insulator
- C.
Cell
- D.
Current
- 6.A crane in a junkyard can separate iron and steel from paper using a(n)
- A.
Generator
- B.
Volt
- C.
Electromagnet
- D.
Transformer
- 7.A device that is used to change the voltage of electricity is a(n)
- A.
Generator
- B.
Volt
- C.
Electromagnet
- D.
Transformer
- 8.A unit for measuring the force that makes negative charges flow is called a(n)
- A.
Generator
- B.
Volt
- C.
Electromagnet
- D.
Transformer
- 9.A magnet’s pull is strongest at its
- A.
Volt
- B.
Poles
- C.
Field
- D.
Generator
- 10.A bulb gets dimmer when a second bulb is added to the circuit. The bulbs are wired in a(n)
- A.
Series circuit
- B.
Parallel circuit
- 11.A material electricity flows through easily is a(n)
- A.
Insulator
- B.
Fuse
- C.
Conductor
- D.
Resistor
- 12.Which is NOT an example of the uses of an electromagnet?
- A.
Separating scrap iron from other garbage
- B.
Ringing a door bell
- C.
Finding which direction is North
- D.
Picking metal splinters out of skin
- 13.A balloon sticks to a wall after being rubbed on a sweater because of
- A.
Magnetism
- B.
Static electricity
- C.
Mechanical energy
- D.
Chemical energy
- 14.List at least three ways you can protect yourself from lightning in a thunderstorm.
- 15.What are five forms of energy that electrical energy can be changed into?
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