A material that allows electricity to pass through easily is a conductor.

A material that does not allow electrons to move through it easily is a conductor.

Static electricity is not generally produced by friction, conduction, or induction.

The movement of static electricity as charges move off an object, sometimes seen or felt as a spark (lightning), is Static Electricity

A device used to convert chemical energy into electric energy made up of a group of cells connected together is called a Battery.

An object can become electrically charged if it gains or loses which particles?

A charged object (A) comes in to contact with an uncharged object (B). In the process, object A loses electrons and object B gains electrons. Which of the following is true?

Which of the following best describes a magnetic field?

How does Earth’s magnetic field compare with that of a bar magnet?

The students continued their experiments on force fields, this time investigating magnetism. One group student set up the demonstration you see here. “Oh wow!” Sarah exclaimed. “It’s magic!” Is it magic? Which statement best explains how the center magnet is able to hover between two other magnets?

Jason places a bar magnet on a flat surface and covers it with a sheet of paper. Then he evenly sprinkles a layer of iron filings on top of the paper. Which of the following diagrams indicates the most likely arrangement of the filings on the paper?

Candice learns that all magnets have two magnetic poles. Which of the following observations would best support this statement?

Using the image below, where is the magnetic field of this magnet the strongest?

Objects can be charged in many ways. In the image below, a student is rubbing a balloon on her head.

What method is this student using to charge the balloon?

What is the difference between charging by conduction and charging by induction?

Two charged particles are near each other, but they do not touch. Which process is possible?

Two neutrally charged balloons are touching. What will happen if a negatively charged rod is brought near one of the balloons without touching it?

Two neutrally charged balloons are touching. What will happen if a positively charged rod is brought near one of the balloons without touching it?

Which of the following is an electrical insulator?

A science lab has copper wire coasted with rubber tubing, a plastic vial, and a pair of cotton gloves. Which of these materials is not an electrical insulator?

Which of the following is the best definition of electromagnetism?

An engineer is building an electrical device. She wants to use a material that will give her the most control over the amount of electric charge that flows through a circuit. Which material should she use?

Observe the photo of an electromagnet.

Electric current flows through the wire. What is the name for this coiled wire that is wrapped around the iron core of the electromagnet?

How do an electric motor and electric generator differ?

When the current in an electromagnet increases, what does its magnetic field do?

Which change would result in a stronger generator or electromagnet?

Students want to test several objects to see if they are insulators or conductors of electricity. They make this testing device.

Select two steps from below the instructions into the correct boxes to complete the instruction list below:

Step 1: Assemble the testing device as show in the picture.

Step 2:

Step 3:

Step 4: Make the observation

Step 5: Make a conclusion based on the observation

Students want to test several objects to see if they are insulators or conductors of electricity. They make this testing device.

Step 1: Assemble the testing device as show in the picture.

Step 2: Place an iron bar between the two clips

Step 3: Connect one clip to each end of the object

Step 4: Make the observation

Step 5: Make a conclusion based on the observation

Select one possible observation and its matching conclusion to explain the results of this experiment.

A student is planning an investigation to determine the relationship between magnetism and the movement of electrical charge in a circuit. A diagram of the circuit is shown.

The student is planning to make changes to the circuit to see how the changes will affect the number of paper clips that are picked up by the electromagnet. What is the likely effect of the magnetic field if the student adds more coils?

In a parallel circuit the current

What is the difference between a parallel circuit and a series circuit?

What are three examples of forces/fields?

Magnetism is a

The Sun has more gravity than the planets in our solar system because the Sun is

You can watch static electricity in action by rubbing an inflated balloon against your hair. Your hair will actually stand on its end! It does this because each hair becomes charged, and they all repel one another.

However, eventually, your hair will return to normal. Why is this?

There are three ways objects can become electrically charged. They are friction, induction and

How would a bar magnet orient itself relative to this planet’s magnetic field?

A group of students is investigating the different factors that affect the strength of an electric motor. A diagram of the motor is shown.

Magnets and electromagnets can both be used to pick up metal items like iron nails.

Although they are alike, there is a difference between magnets and electromagnets. An example of this is that increasing the current running through the electromagnet's wire will make it stronger.

What is another difference?

An electric generator transforms mechanical energy into electrical energy. This process could be done by which of these?

A magnet has two poles, a North and South. What happens when two magnet's South poles are placed near each other?

There are various ways to increase the strength of an electromagnet. You can increase the amount of loops around a metal core, you can increase the core size and

The following material is not a good electrical conductor

The direct transfer of electrical energy from one object to another that it is touching

A circuit must have

A series circuit has

A circuit without a load will cause the battery to catch fire.

A load in a circuit can be

Gravity is a force between any two objects with mass. Why doesn't a person feel a gravitational force between him/herself and another person?

The moon orbits our Earth. The opposite would never be true; the Earth would never orbit the moon. One reason is due to the force of gravity. The object ____________ has a greater gravitational force and that determines what satellites orbit around it

An astronaut travels to the moon. What is true regarding her mass and weight?

Which is an example of gaining a static charge by conduction?

If you hold a balloon by a string and the balloon moves toward your sweater and sticks there, what would you infer?

What process is the method by which a neutral object obtains an electrical charge?

Friction, conduction and induction are three ways of creating a static charge on an object. Which method or methods will produce the same charge on two objects?

After turning off the television, you approach it. As you get close, but not touching it, the hairs on your arm start to stand up. This is an excellent example of static charge built up by

Sandy rubs a rubber rod with a piece of animal fur. The total charge of the system before rubbing is zero. The system is made up of the rubber rod and the fur. Initially, the charge on the rod is zero and it is electrically neutral. The same is true for the fur. When Sandy rubs the rubber rod with the fur, the rubber rod acquires negative (-) charges. How does the system change, overall, based on the law of conservation of charge?

Describe how you can cause the two leaves at the bottom to repel each other and stay that way.

Laundry in a clothes dryer often becomes charged with static electricity while drying. Which of these best explains why a clothes dryer often generates static electricity?

Air

Pencil Lead

Glass

Lemon Juice

Renaldo and Nasreen build an electromagnet by wrapping a wire around a nail and connecting the wire to both terminals of a battery. When they test the electromagnet, it can pick up 6 paper clips. Their teacher wants all groups to pick up at least 10 paper clips. What could Renaldo and Nasreen do to increase the number of paper clips their electromagnet picks up?

A simple motor converts _________________ energy into ___________________ energy.

Donna is attempting to make an electromagnet to pick up old nails in and around her driveway. Which of these materials would be best to use for the core in order to make the strongest electromagnet to pick up the most nails?

A generator consists of a rotating wire coil placed in a magnetic field. This process transforms mechanical energy into _________.

Students hypothesized that by running an electric current through the wire of the apparatus shown here, they could cause a non-magnetic nail to exhibit magnetic properties. What would be a reasonable way to test this?

In order to generate electricity from mechanical energy, one essential element needed to transform the energy into electrical energy is

You are learning about energy transformations in science class. Sally's group made this electromagnet using a battery and some wire. Describe the energy transformation you see here.

Brady connected the loose wire to the battery and created an electromagnet. He picked up 45 thumb tacks with his electromagnet, though his goal was to pick up 50 thumb tacks. What could Brady do to increase the strength of his electromagnet and pick up more thumbtacks?

This is a machine that converts electrical energy into mechanical energy.

This is a machine that will convert mechanical, nuclear, or chemical energy into electrical energy.

A force of attraction/repulsion due to the spin of electrons.

This is a flow of electrons that creates a charge, one of the fundamental forms of energy.

Which image represents a gaining of a charge on the leaves of the electroscope by conduction?

Which image represents a gaining of a charge on the leaves of the electroscope by induction?

The invisible field that surrounds a magnet.

One of the first applications of magnets

Magnets can exert forces on other objects with out touching them

When magnetic field lines are close together

The region of a magnet that has the strongest field

Why would the two magnetic trains move together?

Electric charge at rest on an object that can be positive or negative is called static electricity.