8 EIGHTH GRADE EARTH & SPACE SCIENCE

THE MAGNETIC PLANET/ ELECTROMAGNETISM/ ELECTROSTATICS

PENN POWER GRANT

NAME: ____________      PERIOD: _____           DATE: _________

 

MAGNETIC LAB OBJECTIVE: TO DISCOVER THE PROPERTIES OF MAGNETIC AND ELECTRICAL FIELDS.

 

STEP 1- Take one of the ceramic magnets and place a pencil through it. Dangle the magnet and pencil from the table with a piece of string.  Compare to a compass and observe magnetic North & South. (Note effect on compass : directional changes during the investigations.)

 

STEP 2- Observe one magnet is placed flat on the table and another brought close to it - till it touches and then pick up the one magnet. (See Magnetometer handout.)

 

STEP 3- Place one magnet on the wooden dial rod and then place one on with opposite polarity. Measure the distance in between to the best of your ability. Continue adding magnetic rings and measuring their distances. Then try two on the bottom.  Make a chart & graph of your results.

 

One magnet on bottom.         Two magnets on bottom.  Three magnets on bottom.

# Magnets: Distance c.m.      # Magnets: Distance c.m.  # Magnets: Distance c.m.

 

      1                       1                         1

      2                       2                         2

      3                       3                         3

      4                       4                         4

      5                       5                         5

 

Give your results to your magnetic lab here:_____________________________________________

 

_________________________________________________________________________________________

 

_________________________________________________________________________________________

 

 

 


STEP 4- Set up a triangle of three magnets and dangle one with string from the table edge and observe: (see pendulum chaotic motion handout).

 

 

 

 

STEP 5-

Get a printout of at least two different magnetic fields using two different magnets.

 

 

Attach and label poles (North /South) etc.

NAME: ____________      PERIOD: _____           DATE: _________

 

DEFINE THE MAGNETIC LAB TERMS OR ANSWER THE QUESTIONS:

 

 

1.  POLES-

 

2. MONOPOLES-

 

 

3. FERROMAGNETIC-

 

 

4.  MAGNETOSPHERE-

 

 

4.  THE DYNAMO THEORY-

 

 

5.  ELECTRICAL GENERATOR  2 -

 

 

6.  ANDRE AMPERE-

 

 

7. MICHAEL FARADAY-

 

 

8. HANS CHRISTAN OERSTED-

 

 

9. JAMES CLERK MAXWELL-

 

 

10. MAGNETIC FORCE (RIGHT HAND RULE) F= q* B*V SIN O-

 

 

11. MAGNETIC RESONANCE IMAGING-

 

 

12. SUPERCONDUCTIVITY-

 

 

13.  MAGNETIC LEVITATION *-

 

 

14. ELECTROSTATIC INDUCTION *-

 

 

 

15. PERIODICALLY REVERSAL OF THE EARTH’S MAGNETIC POLES-