Ward's World Activity Guides

+ ward ' s science Page 4 Station 5: Magnetic Putty: Remember: you have 4 minutes maximum at each lab station. Turn the paper to 'red' when you arrive and flip it over to 'green' when you are done. IMMEDIATELY open the can of magnetic putty and put the magnet on top of the putty. Observe as the magnet is slowly pulled into the putty. When your time is up, REMOVE the magnet from the putty, but leave it in the container so it is ready for the next group. Station 6: "Sticky Stones": Remember: you have 4 minutes maximum at each lab station. Turn the paper to 'red' when you arrive and flip it over to 'green' when you are done. Take the "stones" out of the bag and divide them between each of you. Quickly see who can build the best item/shape out of their stones. Then put all of the stones back together and work together to see what shape/object you can build before the time is up. Be sure to answer the questions on your worksheet too! When done, put the stones back in the bag in the bin. Station 7: Neodymium Magnets and a dollar bill: Remember: you have 4 minutes maximum at each lab station. Turn the paper to 'red' when you arrive and flip it over to 'green' when you are done. WARNING/CAUTION these magnets are VERY STRONG and can HURT YOUR FINGERS. DO NOT try to take them apart, leave them together for this experiment as it works best with as strong a magnet as possible. Do not put them near any electronic devices either. Directions: You can take turns doing this experiment (if you want to) so you can all feel the strength of the neodymium magnets. Pick up the magnets. Leave the dollar bill lying on the bottom of the bin. Gently touch the neodymium magnets to the dollar bill and slowly lift up. See if you can get the dollar bill to follow the magnets. If you do it right, you should be able to get the folded half of the dollar bill to lift up quite a ways. Answer the questions on your worksheet. And turn the paper to green when you are finished. Station 8: The Water Clock: Remember: you have 4 minutes maximum at each lab station. Turn the paper to 'red' when you arrive and flip it over to 'green' when you are done. DO NOT TOUCH THE WATER CLOCK Take a moment to observe the water clock. Then answer the questions on your worksheet. When directed to do so, read the rest of this paper. Explanation of the water clock: The Water Clock is essentially a battery. Batteries work by making electricity from a chemical reaction. A battery consists of three basic parts: an anode, a cathode, and an electrolyte. The materials used for the anodes and cathodes vary, but the most commonly used are zinc, carbon, aluminum, copper or brass. The water clock uses brass and zinc, with water as the electrolyte. Marvelous Magnets: An Exploration of Electromagnetism with Lab Stations (continued)

• Cover