Simple forces are one of the basic topics in physical science.
Physical science covers a wide array of topics, including forces and motion, chemical reactions and the turbulence of weather. You can immediately turn your students on to the wonders of physical science by demonstrating a few activities on the first day of school.
Egg in Motion
You can show students how an object moves according to Newton's first law of motion by setting up a falling egg demonstration. Fill a glass with two cups of water. Add in five drops of food coloring, any color. Place an aluminum pie tin on top of the glass. Place a toilet paper tube vertically in the center of the pie pan. Place an egg on top of the toilet paper tube. Since the egg is bigger than the opening of the tube, it will sit on top of it without falling through. Using a fast action, push the pie pan out horizontally. If the pan is pushed out quickly, it will not knock over the glass of water, and will cause the egg to drop into the glass of colored water.
Permanent Marker Rainbow
You can demonstrate an eye-catching chemical reaction by making a permanent marker rainbow. Place a white T-shirt over a cup, and wrap a rubber band around it to secure it. Stretch the T-shirt taut. This will create a circle in which the rainbow will appear. Using six different colors of permanent markers, draw six dots in the center of the circle. You can use any colors. Fill a squeeze bottle with rubbing alcohol. When the alcohol is squeezed onto the marker in the middle of the T-shirt, it will react by causing the colors to spread out rapidly.
Bottle Hurricane
Demonstrate make a hurricane inside of a plastic soda bottle. Pour six cups of water into a 2-liter soda bottle. Put in 10 drops of food coloring, any color. Place a second empty soda bottle on top of the first, aligning the openings. Wrap duct tape around the openings, sealing them tightly. Turn the bottle upside down, and watch the hurricane swirl inside the bottle.
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