Download Forces (magnets) Study guide

Name: ________________________________________ Date: ________________________ Block: ___________
Magnets Study Guide
Target 1: I can determine the factors that affect the strength of electric and magnetic forces.
1. Name three materials that are magnetic.
a. ____________________________________
b. ____________________________________
c. ____________________________________
2. What force is pulling objects towards earth? ______________________________
3. Two "like" poles _______________________________ each other.
4. Two "opposite" poles ______________________________ each other.
5. The space around a magnet where the magnetic forces work, where they can attract or repel magnetic
materials is known as the ___________________________________.
6. The field lines are more concentrated around the _____________________________.
7. Sketch the magnetic field of the bar magnet below.
8. Sketch the magnetic field of the electromagnet below.
9. Look at your sketches, how does the magnetic field of a bar magnet relate to that of an electromagnet?
10. Name three ways that you can strengthen the magnetic field of an electromagnet.
a. ____________________________________________________________________
b. ____________________________________________________________________
c. ____________________________________________________________________
11. Name the main difference between a permanent magnet and an electromagnet.
12. Name two examples of how electromagnets are used in the real world.
a. ____________________________________________________________________
b. ____________________________________________________________________
Target 2: I can conduct and evaluate an investigation that proves that non-contact force fields exist.
13. An object can have an electric charge by either gaining or losing _________________________.
14. Name two real world examples of static electricity.
a. ____________________________________________________________________
b. ____________________________________________________________________
15. What is the charge of an object if it gains electrons? _______________________________
Target 3: I can argue that gravitation pull depends on the masses of two objects.
Use the your knowledge from the labs we conducted and the BrainPop videos to answer numbers 16-18.
16. Label the poles and sketch Earth's magnetic field below. How did this field form?
17. How do you use a compass? How does it work?
18. Name an example of something that might interfere with your use of a compass.
19. What is the correlation between mass and gravitational pull?