Electricity and Magnetism Unit Review

Unit 6-PS.5a, PS.9a-f

Review

Unit 6: Electricity and Magnetism

Draw

Warm Up: Create a graph that represents your happiness levels on each day of the week. It could be a bar graph, a pie chart, or a line graph. Be sure to include a title and label your x and y axes if necessary. You have 5 minutes.

Multiple Choice

Clothes sticking together in a dryer is an example of:

• Current electricity

• Static electricity

• A bad Saturday

Multiple Choice

______ are the particles that actually move to cause a buildup of electric charge

• Electrons

• Neutrons

• Protons

Multiple Choice

Which image correctly depicts static electricity?

Open Ended

What is the relationship between electricity and magnets?

Open Ended

Look at the graph in the image. Describe what you see.

Multiple Choice

What is on the x-axis?

• Static Electricity Charged to the Human Body

• Relative Humidity

Multiple Choice

What is on the y-axis?

• Static Electricity Charged to the Human Body

• Relative Humidity

Open Ended

What would be a good title for this graph?

Open Ended

What does this graph tell you about the relationship between static electricity and humidity?

Multiple Choice

The north and south poles of a magnet will?

• Attract

• Repel

Multiple Choice

Like poles ___________

• Attract

• Repel

Draw

Circle the x-axis on the graph below. Underline the y-axis on the graph below.

Open Ended

What is a good title for this graph?

Open Ended

What does this graph tell you about the relationship between the attraction force of a magnet versus the distance?

Multiple Choice

More __________ will make an electromagnet more powerful and able to pick up more objects, like paper clips.

• Batteries

• Coils

• Wires

Multiple Choice

In order for the electromagnet to work, ______________ end(s) of the wire must be attached to the pole(s) of the battery.

• One

• Both

Multiple Choice

If all of the lights in a school go out when one light switch is turned off, then we say that the school is on a _____ circuit.

• series

• parallel

Multiple Choice

In a ______ circuit, when one bulb goes out, the other shines.

• parallel

• series

Multiple Choice

All of the following are examples of semiconductors except:

• Diodes

• copper wire

• transistor

Multiple Choice

CONSTRUCTED RESPONSE QUESTION: In terms of movement of positive and negative charges, what can cause a shock when you touch a metal door knob?

• Protons from the person move to the metal door knob when touched, creating an electric current.

• Neutrons from the person move to the metal door knob when touched, creating a parallel circuit.

• Extra electrons jump from the person to the metal door knob, because negative charges attract to positive charges, which creates a static electric shock.

• Atoms from the person move to the metal door knob when touched, creating a static electric shock.

Multiple Choice

After completing an investigation of how distance affects the strength of electric forces, you graphed your data. Imagine your graph shows that the longer the distance, the strength of the electric field is minimal. What conclusion can you draw from your data?

• The strength of the electric field is strongest at a long distance.

• The strength of the electric field is strongest at a short distance.

• The strength of the electric field is weakest at both ends of the graph.

• The strength of the electric field is strongest at both ends of the graph.

Multiple Choice

A group of students carried out an investigation in which they caused the surface of a balloon to become electrically charged by rubbing the balloon on a piece of wool. They then brought the charged portion of the balloon close to a classmate’s hair and watched as the hair stuck to the balloon. The teacher explained that this was due to the negative charge on the hair. What was the charge on the balloon?

• negative

• neutral

• no charge

• positive

Multiple Choice

A group of students built an electromagnet using a 9-volt battery, an iron nail and copper wire.

What can the students do to make the electromagnet stronger?

• Increase the thickness of wire used.

• Replace the iron nail with a smaller iron nail.

• Decrease the number of turns in the wire coil.

• Replace the battery with a higher voltage battery.

Multiple Choice

Allison is working on a science activity. She takes an iron rod and wraps insulated copper wire around it. She connects the ends of the copper wire to the battery. Allison switches on the circuit and brings some paper clips near the iron rod. The paper clips are attracted to the iron rod.

Which of the following will cause the paper clips to fall off the iron rod?

• increase the current flow through the circuit

• switch on the circuit to start the current flow

• increase the copper wiring around the iron rod

• switch off the circuit to stop the electric current