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WorksheetsStandard 3 & 4: Electricity and Magnetism Benchmark Test (B)
Total questions: 30
Worksheet time: 30mins
Name
Class
Date
1.
What needs to be done to the circuit in the picture so the light bulb will light?
a)
The light bulb must be twisted into the socket.
b)
The knobs at the top of the battery need to be twisted.
c)
The switch needs to be flipped to close the circuit.
d)
The wires need to be joined.
2.
Which phrase explains why the light bulb will not light?
a)
Because this is an incomplete circuit.
b)
Because this is a complete circuit.
c)
Because there is no power source
d)
Because there is no load.
3.
What is the best way to safely test whether a nail will conduct electricity?
a)
Observe the nail to find out if it is made of metal.
b)
Touch the end of the nail to one end of the battery.
c)
Touch the end of the nail to one end of a magnet and then to a metal object.
d)
Make a circuit using a battery, wire, light bulb and the nail.
4.
Which object is an example of a power source?
a)
A battery
b)
A switch
c)
A wire
d)
A bell
5.
Which object may be picked up when a magnet is held close to it?
a)
An aluminum can
b)
A plastic comb
c)
A copper coin
d)
A steel paper clip
6.
Which metal may be present in a rock that can be picked up by a magnet?
a)
Gold
b)
Silver
c)
Iron
d)
Magnesium
7.
How can the strength of an electromagnet be increased?
a)
By removing wire from the coil.
b)
By decreasing the electrical current.
c)
By increasing the temperature of the wire.
d)
By adding more wire to the coil
8.
Which property should be in the section labeled X?
a)
Attracts iron.
b)
Require Electricity.
c)
Always magnetic.
d)
Occurs in nature.
9.
A student rubbed a needle on a magnet several times. After pushing the needle through a small piece of cork, the student floated the cork in water. Which observation is the student most likely to make?
a)
The needle quickly begins to rust.
b)
The needle points North and South.
c)
The needle spins around in a circle.
d)
The needle points straight up and down.
10.
A student wants to compare the magnet field of a magnet to the magnetic field of Earth. Which tool should she use in her comparison?
a)
A ruler
b)
A battery
c)
A compass
d)
A conductor
11.
What happens when the north pole of one magnet and the south pole of another magnet are placed next to each other?
a)
They attract (pull towards) each other.
b)
They repel (push away) from each other.
c)
They magnetize each other.
d)
The demagnetize each other.
12.
The picture shows an electromagnet built by a student. What can the student do to investigate the strength of this electromagnet?
a)
Use it to pick up different numbers of rubber bands.
b)
Use it to pick up different numbers of paper clips.
c)
Replace the battery with a light bulb.
d)
Replace the nail with a piece of wood.
13.
A student is writing a paragraph about the magnetic field of Earth. Which topic sentence uses the best scientific language?
a)
Magnets are made of iron.
b)
A compass points toward nearby magnets.
c)
Earth is like a magnet and connects to other magnets.
d)
The magnetic field of Earth is like that of a magnet bar.
14.
Which idea should a student include on a list of similarities between the magnetic field of Earth and the magnetic field of an electromagnet?
a)
They both affect a compass.
b)
They have the same strength.
c)
They both have two north poles.
d)
They have fields that always stay the same.
15.
Why would a magnet less powerful than Earth's magnetic field be able to interfere with the compass?
a)
The compass is much closer to the magnet.
b)
The color of the magnet is different.
c)
The weight of the magnet is much smaller.
d)
The shape of the magnetic field is different.
16.
Which of the following is an example of static electricity?
a)
A car running when you turn a key.
b)
A light turning on when you flip a switch.
c)
Socks attracting each other in a dryer.
d)
People getting energy from the food they eat.
17.
Which example is most similar to lightening?
a)
Touching a fingertip to a metal doorknob.
b)
Hitting a rock with a metal hammer.
c)
A burning campfire.
d)
A burning sparkler.
18.
Student A noticed that he sometimes got a shock when he touched the television screen. He concluded that the shock was caused by the same thing that caused a shock when he touched the doorknob. Student B wanted to find out if different materials produce a charge on balloons. He tested three materials and found that silk and wool charged the balloon but cotton did not. He concluded that some materials do and some materials do not produce a charge on balloons. Which statement best describes these two investigations?
a)
Both methods involved science.
b)
Neither method involved science.
c)
Only student A used a scientific method.
d)
Only student B used a scientific method.
19.
What could be added to the circuit in the picture to make the light bulb brighter?
a)
Another switch.
b)
Another light bulb.
c)
Another wire.
d)
Another battery.
20.
What observation best completes the table?
a)
No light.
b)
Less light.
c)
Some light.
d)
Most light.
21.
What is one way to safely find out whether a nail will conduct electricity?
a)
Touch the point of the nail to another metal object.
b)
Rub the nail against the balloon to make static electricity.
c)
Measure the amount of metal in the nail.
d)
Put the nail in a simple electric current with a 9-volt battery.
22.
What is the power source in the circuit?
a)
The battery.
b)
The black wire.
c)
The white wire.
d)
The light bulb.
23.
Which two occurrences are both examples of static electricity?
a)
A light bulb turning on, a spark jumping from the carpet.
b)
A light bulb turning on, north and south poles attracting.
c)
Objects clinging together, a spark jumping from a carpet.
d)
Objects clinging together, north and south poles attracting.
24.
What type of discharge causes lightening?
a)
Electric
b)
Magnetic
c)
Sound
d)
Light
25.
A student owns several cats and wants to find a way to keep their fur off his clothing. The student was told about a spray that stops static cling. How could the student best learn if the spray really works?
a)
Ask 5 friend about static cling.
b)
Test clothes with and without the spray.
c)
Read a newspaper article about static cling.
d)
Find an internet advertisement about static cling.
26.
One AA battery is used to light a light bulb in a circuit. When the battery runs out of power, it is replaced with two AA batteries. How will this change affect the circuit?
a)
The light bulb will not work.
b)
The light bulb will be brighter.
c)
The light bulb will have the same brightness.
d)
The light bulb will be dimmer and will not burn out.
27.
A student built three different circuits. The same types of battery and light bulb are in each circuit. Which statement correctly compares the brightness of the light bulbs in the different circuits?
a)
The light bulb in circuit X is twice as bright as the light bulb in circuit Z.
b)
The light bulb in circuit Y is twice as bright as the light bulb in circuit Z.
c)
The light bulb in circuit Y is twice as bright as the light bulb in circuit X.
d)
The light bulb in circuit Z is twice as bright as the light bulb in circuit X.
28.
Which item best completes the table?
a)
Book
b)
Eraser
c)
Penny
d)
Rock
29.
Students were asked to design an experiment that tests the ability of materials to conduct electricity. They designed the electrical circuit shown.
a)
Yes, as long as the conductors are metals.
b)
Yes, as long as a complete circuit is made.
c)
No, because there is only one way to set up an experiment.
d)
No, because without a battery or a switch the light bulb will not light up.
30.
A circuit is shown. Which object will complete the circuit and light the light bulb when placed in position X?
a)
Glass marble
b)
Metal coin
c)
Rubber eraser
d)
Wooden stick
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