Electricity and Magnetism Questions to Guide You...

Today we had an "enlightening" day discussing the similarities and differences between series and parallel circuits!  With our quiz behind us, it's time to look ahead to next Tuesday's test.  We have completed a copy of the study guide in class, and it should be located in your child's science section of the 4th grade binder.  It is here for your reference as well.  Happy studying!  I know the students are going to do a wonderful job!

Magnetism and Electricity Study Guide

Name 2 examples of conductors:

1. ______________________________ 2. __________________________

Name two examples of insulators:

3. ______________________________ 4. __________________________

Match each definition to the correct term:

A. circuit                  5. ____ Any material that has magnetism

B. magnetic field          6. ____ A path along which negative charges move

C. electric current        7. ____ When electricity is used to make a magnet

D. magnet                8. ____ The area around the poles formed by lines of force

E. electromagnet          9. ____ The flow, or movement, of negative charges through a conductor.

10. The drawing shows iron filings sprinkled around two magnets. Label these bar magnets below.  Which one shows North Pole facing South Pole?  Which one shows North Pole facing North Pole?

11. Cranes use electromagnets to pick up iron and steel from piles of other materials. The iron and steel objects are then moved to another area. Explain why the cranes use electromagnets rather than regular magnets.

________________________________________________________________________________________________________________________________________________________________________________________________________________________

12. If you rub a balloon on your hair, the balloon becomes negatively charged. What causes this?

______________________   _____________________

13-15. Illustrate and label a complete circuit using a battery (power source), a wire, and a light bulb (receiver). Label each part.

16.    Who invented the usable light bulb? __________________________ 

Who experimented with a kite in a storm to investigate static electricity and lightning? _______________________ 

Legend says that Magnus’ sandals stuck to what magnetic rock? _______________________

Draw 2 bar magnets below numbers 17 and 18 that would:

17. Repel each other…                   18. Attract each other…

All magnets are attracted to anything made of these materials:

19. __________________ or 20. ___________________

Magnets may also be attracted to these 2 metals:

21. __________________ or 22. __________________

23. Draw a picture that shows a series circuit that contains wire, a battery, and two light bulbs.

24. Draw a second picture that shows a parallel circuit with the same items in it.

***Also, be sure to know all of the vocabulary/definitions from the vocabulary quiz that we had Wednesday, 3/12/14.***