Magnetism #1
Magnetism #2
Electricity#1
Electricity #2
100
Cassie has a magnet that she holds over an iron nail. The nail moves toward the magnet before the magnet touches it. Which of the following is true about magnetism? A. Magnetism is a force, and therefore it cannot move an object. B. Magnetism is a force that acts at a distance and cannot be seen. C. Magnetism is a force that must directly touch an object in order to move it. D. Magnetism is a force that can be seen in the air as it moves an object.
B. Magnetism is a force that acts at a distance and cannot be seen.
100
Which of these acts like a magnet? A. Atlantic Ocean B. Blue Ridge Mountains C. NC Emerald Mine D. Planet Earth
D. Planet Earth
100
Which of the these can be classified as a conductor? A. cotton yarn B. plastic comb C. metal spoon D. balloon
C. metal spoon
100
Look at the circuit in the picture. Would you expect the bulb to light? A. Yes, but only if another battery is added. B. No, because the key is an insulator. C. Yes, because the key is a conductor. D. No, because the circuit is incomplete.
C. Yes, because the key is a conductor.
200
The picture shown shows small bits of iron metal, called filings, arranged in a pattern around a larger object. What form of energy moved the iron filings to make the pattern shown in the picture? A. electrical energy B. light energy C. potential energy D. magnetic energy
D. magnetic energy
200
Look at the picture of the two magnets shown. If the magnets were hung next to each other, which arrow shows the direction that the magnet on the left would move? A. arrow X B. arrow Y C. arrow W D. arrow Z
D. arrow Z
200
Which of the following could best be classified as an insulator? A. metal cup B. metal coin C. wire screen D. plastic straw
D. plastic straw
200
Look at the picture shown. Which are the energy receivers? A. the fans at position X B. the battery at position Z C. the wires at position Y
A. the fans at position X
300
Mrs. Teague gave her students a set of items. They had a toothpick, pencil, paper clip, safety pin, nail, and dime. She also gave them a magnet. She told them to predict which items are magnetic. How can they test their predictions? A. See which items stick to the pencil. B. Weigh each of the items. C. Measure each of the items. D. See which items stick to the magnet.
D. See which items stick to the magnet.
300
This large magnet is being placed near a group of empty cans. What will happen when the magnet gets very close to the cans? A. The labels will fall off the cans. B. The magnetic cans will move toward the magnet. C. The non-magnetic cans will move toward the magnet. D. The cans will become full again.
B. The magnetic cans will move toward the magnet.
300
What will happen to the two objects in the picture below as they are slowly moved toward each other? A. The objects will push away from each other. B. The objects will both move away in the same direction. C. The objects will not affect each other. D. The objects will be pulled toward each other.
D. The objects will be pulled toward each other.
300
Which best describes this picture? A. two bulbs in a parallel B. two bulbs in a series C. an incomplete circuit D. a short circuit
B. two bulbs in a series
400
Kayla built four electromagnets. The bolts are the same size in each electromagnet. Which electromagnet has the strongest magnetic field? A. Electromagnet 1 B. Electromagnet 2 C. Electromagnet 3 D. Electromagnet 4
B. Electromagnet 2
400
Look at the picture shown. Which provides evidence that magnetic force goes through cardboard? A. Horseshoe magnets are very strong. B. The nail is stuck to the cardboard. C. The paperclip is stuck to the nail. D. Two poles are touching the cardboard.
B. The nail is stuck to the cardboard.
400
What will happen to the two objects in the picture as they are slowly moved toward each other? A. The objects will push away from each other. B. The objects will not affect each other. C. The objects will be pulled toward each other. D. The objects will both move in the same direction.
A. The objects will push away from each other.
400
Mark is using an electromagnet to pick up metal washers. The washers fell off. Why? A. The washers need to be turned over. B. The flow of electricity stopped. C. The wire can only be used one time. D. The wire became too hot.
B. The flow of electricity stopped.
500
A metal ball has a positive electrical charge. What will happen when it is brought near another metal ball with the same positive electrical charge? A. The two metal balls will be pulled toward each other. B. The two metal balls will be pushed away from each other. C. The two metal balls will touch and move in circles around each other. D. The two metal balls will touch and remain connected with each other.
B. The two metal balls will be pushed away from each other.
500
Jaylen discovered that his magnet attracted a metal paper clip. What must be true about the paper clip?A. The paper clip contains rubber. B. The paper clip contains iron. C. The paper clip contains wood. D. The paper clip contains glass.
B. The paper clip contains iron.
500
How does a switch change a circuit?
A. The switch stops and starts the flow of electricity.
B. The switch keeps the wires from getting hot.
C. The switch makes the battery stronger.
D. An open switch completes the circuit.
A. The switch stops and starts the flow of electricity.
500
Which best describes why electrical wires are made out of metal? A. Metal wires are safe to use. B. Metal wires attach easily to a battery. C. Metal bends easily in a circle. D. Electricity moves well through metal.
D. Electricity moves well through metal.