The effect of water on Magnetism
Purpose: Does water affect a magnetic field?
Overview: Sound waves go through both water and air. In fact, they travel farther and faster in water than they do in air. How about magnetism? Does it go through water, too?
Hypothesis: Water has no effect on Magnetism.
- 2-liter plastic soda bottle
- masking tape
- metal paper clip
- 2 pencils
- an adult
Procedure: Ask an adult with scissors to cut off the rounded part of a 2-liter bottle. Place a metal paper clip in the bottom of the bottle. Wrap a strip of masking tape around one end of a six-sided, not round, pencil and then number the sides. Write "1" on the tape on one side, then turn the pencil and write "2," and so on. Tie a piece of masking tape/ Tie the other end of the string to a magnet. Turn the pencil wrapping the string around it, and set it over the top of the plastic bottle. Slowly, lower the magnet into the bottle. When the magnet is close enough and captures the paper clip, stop! Notice the number on the side of the pencil.
Carefully, lift the magnet straight up without turning the pencil. Remove the paper clip, and lay it back in the bottle in the exact same spot. Fill the bottle half full with water, then slowly lower the magnet into the bottle. Be sure not to turn the pencil, so that the string length has not changed. The string length, the position of the paper clip are Constants The Variable is the substance between the magnet and the paper clip: air and water.
Does the magnet still attract the paper clip? If so, does it do so from the same distance above as it did when the bottle was filled with air instead of water?
Results and Conclusion: Write down the result of your experiment. Come to a conclusion as to whether your hypothesis was correct.
Something more: Now test magnetism using salt water, sugar water or ice water!
My other Science Fair Projects!
- Down-Range Shooter
Purpose: The purpose of this experiment is to determine the angle of trajectory that will give the greatest distance. Overview: When you throw a stone a little upward and away from you, you know that it...
- Hot rocks
Heat transfer from one medium to another Purpose: Is there a good way to store solar heat, and release it slowly over time? Overview: Did you ever touch a rock that has been baking in the sun on a...
- The Mighty Mo
Momentum: A product of force times mass Purpose: Can momentum be increased by increasing the mass of the moving object or by increasing its speed? Overview: Momentum is the force with which an object is...
- Swinging Good Time
Pendulum motion Purpose: The properties of pendulums will be investigated. Overview: When a weight is hung by a wire or a string that is tied to a fixed point ( a point that doesn't move), it is called a...
- Man on a Tight Rope
Wave Motion Purpose: Show that energy can travel along a string and do work at the other end. Overview: Energy can travel in the form of a wave. An uncrested wave in the ocean is energy in motion. The...
- Rub the Right Way
Friction and surfaces Purpose: Compare the friction on a dry surface to one coated with oil. Overview: Friction is the resistance to motion when two tings rub together. Friction is often undesirable. It...
Randomperson on October 26, 2015:
What do you mean when you say the round part of the bottle
hetal on July 25, 2014:
Plea give photo of project
li on April 30, 2013:
when did ou publish this? :D
Nick on May 04, 2012:
It was super easy
mattc on April 21, 2012:
\ on February 20, 2012:
well it seems like it will work and it seems fast and easy
malita on February 18, 2012:
will it work for my science project and this is so confusing
pj on January 24, 2012:
that don't work really work
Don Ship (author) on December 17, 2010:
Thank you, Jratliff!
jratliff on December 17, 2010:
Don Ship (author) on November 26, 2010:
Lol! Sure thing! Thank you Cookibuq and you're welcome indeed.
cookibuq from Ireland / Hong Kong on November 26, 2010:
cool, something to try out while babysitting my cousins !thanks for the idea