Electrical Energy Pre-test
There are different types of energy. The most common today is the electrical energy, which is used and converted into other different forms of energy to help run machines. Gauge how much you know about this form of energy below.
- 1.Electricity is the flow of:
- A.
Protons
- B.
Neutrons
- C.
Electrons
- D.
Light
- 2.The nucleus of an atom contains:
- A.
Protons and neutrons
- B.
Protons and electrons
- C.
Neutrons and electrons
- D.
Only electrons
- 3.Protons have a ____________ charge.
- A.
Negative
- B.
Neutral
- C.
Positive
- D.
None of the above
- 4.Valence electrons are located in the:
- A.
Outermost shell level of an atom
- B.
The shell closest to the nucleus of an atom
- C.
In the nucleus of an atom
- D.
Valence electrons are not in atoms
- 5.An atom's "atomic number" tells us how many______________ it has.
- A.
Protons
- B.
Neutrons
- C.
Electrons
- D.
Both A and C
- 6.Lithium has an atomic number of 3. How many valence electrons does it have?
- A.
1
- B.
2
- C.
3
- D.
0
- 7.If an atom has 1-4 valence electrons, it likes to:
- A.
Hold on to them tightly and not allow energy to flow through
- B.
Give them up and therefore energy flows easily through it
- C.
It just depends on how it's feeling that day
- D.
Sit back and wait for more to come to it
- 8.Materials that allow energy to flow through them are called:
- A.
Insulators
- B.
Semiconductors
- C.
Conductors
- D.
None of the above
- 9.Materials that do NOT allow energy to flow through them are called:
- A.
Insulators
- B.
Semiconductors
- C.
Conductors
- D.
None of the above
- 10.Metals tend to be good ____________.
- A.
Insulators
- B.
Resistors
- C.
Conductors
- D.
Circuits
- 11.The PATHWAY in which electrical energy flows is called a:
- A.
Current
- B.
Resistor
- C.
Terminal
- D.
Circuit
- 12.The FLOW of electrical energy through a circuit is called a:
- A.
Circuit
- B.
Current
- C.
Resistor
- D.
Volt
- 13.When the flow of electrical energy has opposition (something is pushing against it making it difficult for it to get through the pathway), it is called:
- A.
Resistance
- B.
Voltage
- C.
Current
- D.
Circuit
- 14.In an OPEN circuit, the light bulb will be:
- A.
On
- B.
Bright
- C.
Off
- D.
Dim
- 15.When an electrical current is run through a metal such as iron, it turns that metal into a
- A.
Magnet
- B.
Shock
- C.
Static
- D.
Melted mess
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