Chapter 4b Electrical Energy
38 Questions
| Attempts: 232
Questions and Answers
- 1.What particle(s) are in the nucleus of an atom?
- A.
Protons and electrons
- B.
Protons and neutrons
- C.
Electrons
- D.
Protons
- 2.What particle(s) are found moving around outside of the nucleus of an atom?
- A.
Protons and neutrons
- B.
Protons
- C.
Electrons
- D.
Neutrons
- 3.What is the overall charge of an atom with 4 protons and 5 electrons?
- A.
Positive
- B.
Negative
- C.
No charge
- D.
Option 4
- 4.When electrons "rub off" one atom and leap to another, this process is called
- A.
Electric current
- B.
Static electricity
- 5.Materials with like (the same) charges_______________each other.
- 6.Materials with opposite charges _____________________ each other.
- 7.Positive charges in a cloud move suddenly to the ground in a process called lightning.
- A.
True
- B.
False
- 8.A steady flow of electrical charges usually in a wire is called _______________________________.
- 9.The path electricity takes from the source of electricity to the device you want to power and back to the source is called a
- A.
Circuit
- B.
Current
- 10.Which are examples of static electricity?
- A.
a balloon "sticking" to your hair
- B.
A sock stuck to a sweater in the laundry
- C.
Light bulb
- D.
Lightning
- 11.Materials that allow electricity to move through them easily are called
- 12.Electricity can not move easily through
- 13.Check all the materials that are conductors
- A.
Copper
- B.
Plastic
- C.
Iron
- D.
Paper
- 14.Check all the materials that are insulators
- A.
Aluminum
- B.
Plastic
- C.
Rubber
- D.
Glass
- 15.A circuit in your home begins and ends at the
- 16.A ____________ is used to open and close a circuit.
- 17.When a circuit is ___________________ no electricity can flow in the circuit.
- 18.When a circuit is _______________________ electricity can move through the circuit.
- 19.This type of switch is used to adjust the temperature in a room.
- 20.This type of switch changes the amount of electricity that can power a device in a circuit.
- 21.In older homes a ______________________ acts like a circuit breaker to shut off power if too much electricity flows in a circuit.
- 22.Which of these switches help you to use electricity safely?
- A.
Circuit breaker
- B.
Dimmer
- C.
Volume on a radio
- D.
GFCI outlet
- 23.To measure how strongly electrons are pushed in a wire we use what unit?
- 24.The unit that measures how fast electricity is used is a
- 25.A kilowatt is
- A.
100 watts
- B.
1000 watts
- C.
10 watts
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