Electricity and Magnetism

1. FJ Electricity and Magnetism

2. Magnetic Personalities Which object will be attracted to a magnet? a) b) c) d) • Answer: B - a paperclip is correct! Column 1, #1

3. Surprises • Out of the following choices, which is the safest place to be during a lightening storm? • In a lake. • In an open field. • Under a apple tree. • Inside of a mini-van. • Answer: D - inside of a mini-van.

4. It’s Electric • An object with a buildup of electric charges on its surface is charged with _________. • Solar power • Electromagnetism • Static electricity • Electric discharge Answer: C - static electricity

5. Suprises • What is the long, thin wire coiled in an incandescent bulb called? • A fixture • Mercury and argon vapor • A switch • A filament • Answer: D - a filament

6. Magnetic Personalities • The space in which the force of a magnet can act is called its ________. • Electromagnetism • Magnetic field • Electric charge • Magnetic charge • Answer: B - magnetic field

7. Magnetic Personalities • An instrument with a magnetized needle that is allowed to swing freely is called a ________. • lodestone • switch • compass • magnetic pole • Answer: C - a compass!

8. It’s Electric • A fluorescent bulb glows when electricity flows through __________________. • Mercury and argon vapor • Hot air • A tungsten wire filament • An electromagnet Answer: A - mercury and argon vapor

9. It’s Electric This object changes electricity into ______________. • Magnetic current and sound waves • Sound waves and heat • Light and electric current • Light and heat energy • Answer: D - Light and heat energy!

10. Opposites Attract • The charged objects are hung from thin strings so that they can move freely. In which diagram do the objects have opposite charges? • c) b) d) Answer: B - opposites attract!

11. Opposites Attract • What will happen when the two balloons are brought closer together? • a) The balloons will pop. b) Positive charges will move from one balloon to another. c) The balloon will pop. d) The balloons will attract each other. - + - - - ++ - - + - Answer: D - the balloons will attract each other.

12. Surprises • How is energy changing in this picture? • Energy of motion into electrical energy. • Energy of motion is changing to chemical energy. • Heat and light are changing to electrical energy. • Heat and light are changing to chemical energy. Answer: A - energy of motion into electrical energy.

13. It’s Electric • The giant electric discharge that occurs when negative charges jump between a cloud and the ground is called ___________. • An electrical circuit • A thunderstorm • Lightning • neutral Answer: C - lightning

14. Opposites Attract • Magnets on the maglev train cause the rain to rise off the rail because _______________. • The magnets don’t have any poles. • Opposite poles are facing each other. • Like poles are facing each other. • The magnets have more than two poles. • Answer: C - like poles are facing each other.

15. It’s Electric • Materials that have low resistance and allow electricity to pass through them most easily are called _____________. • conductors • fixtures • electromagnets • insulators Answer: A - conductors is correct!

16. Surprises • What device is found inside every electric motor? • a light bulb b) a clock c) a magnet d) An electromagnet Answer: D - an electromagnet

17. Magnetic Personality • What is one advantage of an electromagnet over a natural magnet? • An electromagnet can pick up steel. • An electromagnet produces a magnetic field. • An electromagnet produces electricity. • An electromagnet can be turned on or off. • Answer: D - it can be turned on or off!

18. Surprises • Which group lists three good insulators? • Wood, rubber, aluminum • Paper, steel, glass • Plastic, water, copper • Plastic, rubber, glass • Answer: D - plastic, rubber, glass

19. It’s Electric • Who invented the lightbulb? • Thomas Edison • George W. Bush • Jerry Seinfield • Albert Einstein Answer: A - Thomas Edison

20. Circuit City In the circuit, if light bulb A is removed what will happen? a) the battery stops working b) light bulb B stays lit c) light bulb A stays lit d) the electricity stops flowing + - B A • Answer: D The electricity stops flowing and light B will go out.

21. Daily Double

22. Daily Double Whose Class is better? Ms. Swick’s Mr. Castellanos Mrs. Mendoza They are equally cool

23. Opposites Attract What is an antonym for conductor? Insulator Filament Constantinople Glass Answer A! Insulator

24. Circuit City A ________ is a circuit in which electric charges can flow only in ONE path. Parallel circuit Series circuit Serious Circuit Fast Circuit Answer C! Series circuit

25. Circuit City A ________ is a circuit in which electric charges can flow in TWO or more paths. City circuit Bi-circuit Series circuit Parallel circuit Answer B! parallel circuit

26. Magnetic Personalties What causes this doorbell to ring? A current in the wire creates a magnetic field that pulls the hammer to the bell. The electromagnet moves, creating an electric current in the wire that rings the bell. The bell hits the hammer, creating an electric current in the electromagnet that produces a sound. The bell produces a magnetic field, which creates an electric current in the electro magnet. Answer A! A current in the wire creates a magnetic field that pulls the hammer to the bell.

27. Opposites Attract You put two doughnut magnets on a pencil. One magnet floats over the other one, why does this happen? Like poles are facing each other It’s a miracle Opposite poles are facing each other There is an electric current between the two magnets Answer A! Like poles are facing each other

28. Final Jeopardy Briefly explain the difference between a series circuit and a parallel circuit? How many paths does each have?