Science SOL 5.4 Review

1. If you were conducting an experiment using a battery to create a circuit, which material would you use to make an electrical connection from the battery to the rest of the circuit?

• a copper wire

• rubber bands

• glue

• string

1. All of the following are conductors of electricity except — 

• aluminum and copper.

• plastic and wood.

• lemon juice and tap water.

• the human body and a salt-water solution.

1. What materials are needed to produce an electrical current?

• bulb and wire

• battery and wire

• bulb and battery

• battery only

1. Each of these statements are true except — 

• Like charges repel and unlike charges attract.

• An insulator is a substance that will conduct electricity.

• A battery can provide the electricity for an electromagnet.

• Series and parallel are two types of circuits.

1. Which of these materials is the best electrical conductor?

• copper wire

• string

• sticks

• dry soil

1. What purpose does the rubbery coating on electrical wires serve?

• It is an insulating material that shields the conductor inside.

• It is a colorful material that adds stability to the wire.

• It is important for conducting the electricity to the appliance.

• It is important for conserving electricity.

1. What is the motion of electrical charges called?

• a magnetic current

• a gravitational current

• an electric current

• a static current

1. Which form of static electricity can be harmful?

• rubbing two balloons together

• combing your hair

• rubbing your feet on a carpet

• lightning

1. How is static electricity formed?

1. Electrical charges build up on the surface of a material.

2. Electrical charges are collected from the air.

3. Electrical charges are flowing through the materials.

4. Electrical charges build up in the air and then flow into an object.

• Electrical charges build up on the surface of a material.

• Electrical charges are collected from the air.

• Electrical charges are flowing through the materials.

• Electrical charges build up in the air and then flow into an object.

1. Which of the following can produce static electricity?

• mom baking pies in an oven

• a boy licking an ice cream cone

• letting a balloon go up in the sky

• rubbing your feet on a warm carpet