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4th Grade Science: Electricity
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4th Grade Science: Electricity
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23 Questions

1. The illustration shows an electric circuit consisting of a battery, a switch, and three light bulbs. What type of circuit is shown in the diagram?

2. The girl shown is using an electrical appliance (blow dryer) that has a motor. Which energy transformation is she using?

3. Ryan has a circuit made up of a battery, a light bulb, some wires, and a metal rod as a switch. Ryan replaces the metal rod with a wooden rod. When he closes the new switch, what will Ryan most likely observe?

4. The picture shows a device made of a battery, a nail, and a long piece of copper wire. It converts electrical energy into a different form of energy. Which term describes the device in the illustration?

5. In a series circuit, a break in the circuit causes the current to stop flowing. In a parallel circuit, the current may continue even if there is a break in the circuit. How does a series circuit differ from a parallel circuit?

6. An electron is the particle most easily removed from an atom. Suppose the atom in the diagram lost an electron. What electric charge would the atom then have?

7. Curtis uses a wool cloth to give a balloon a negative charge. What will happen if he holds the balloon near the wall, and why?

8. A key lists the symbols used for the parts of the circuit diagram shown. What is the purpose of the battery in the circuit?

9. What happens when an object with an negative charge comes near another object with a negative charge?

10. If copper wire is attached to the positive and negative ends of the battery, what will be the effect?

11. In the electric circuit shown, light bulbs are placed at A, B, and C. When the switch is closed, all three light bulbs are lit. What happens to light bulbs A and C if bulb B burns out?

12. Which devices will come on when the switch shown is closed?

13. Hector rubs a comb with a wool cloth. Next, he holds the comb near, but not touching, some bits of paper on a plate. What is most likely going to happen?

14. Look at the crane diagram. Which phrase best describes the metal disk?

15. What is static electricity?

16. A circuit is made up of a battery, a small fan, a metal paper clip, and copper wire. When the metal paper clip is replaced with a plastic paper clip, the fan stops spinning. What can you conclude about the plastic paper clip?

17. The diagram shows the particles that make an atom. What is the electric charge of the atom shown?

18. Min tapes a piece of string to each of two table tennis balls. He hangs the balls so that they are close to one another but do not touch. Later, he finds that they have pulled together. They are now touching. What could explain why the two balls are now touching?

19. Glass tends to have a positive charge. How might this explain why the screen on your TV becomes dusty before other furniture does?

20. Clayton tries to build an electric circuit using a battery, a light bulb, a paper clip, and copper wire. The diagram shows what he builds. What statement best explains why the circuit would not conduct electricity?

21. What is the name for a machine that changes electrical energy into energy of motion?

22. Francesca hangs three balloons from strings. She gives the first balloon a positive charge. She gives the second balloon a negative charge. She does not give the third balloon a charge. Describe what will happen when she holds a rod with a positive charge near each balloon. Explain why each balloon reacts the way that it does.

23. The illustration shows some of the parts of an electric power grid. At which part of this grid is electrical energy produced from other types of energy?

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