![]() ![]() Theo was amazed to observe that no matter which way he tilted the stick or how steep an angle he tilted the stick, the paperclips always pointed right down at the ground! Which direction do the paperclips point?.Lift up the dowel rod so the paperclips hang from the string. Then tie the string onto a small dowel rod or stick.Ģ. Start by tying some paperclips to pieces of string. Never allow any child under 3 to use magnets. NEVER leave any child unattended with magnets. Important: Not only are small magnets choking hazards, but magnet ingestions pose a serious threat to the health of children. Blocks, books, or other material for stacking.Metal ruler (or wooden ruler with tape).Strong magnets (Use either neodymium magnets.Earth’s gravity is what keeps you on the ground, what causes objects to fall, and is why the objects fall down rather than up! Materials for Gravity Experiment Gravity is a force that tries to pull two objects toward each other. Giving this freedom to children inspires them to make predictions and critically think about the world around them in a pressure-free setting. Keep experimenting with the tubes at higher and higher angles.Whenever I invite my kids to participate in science activities, my main goal is NOT for them to master a set concept, but simply to allow them to explore the activity in their own way. ![]() Now move the cup back to the same spot on the line and repeat the experiment, but this time hold the cardboard tube at a slightly higher angle. What happens? (The cup should move.) Measure the distance between where the cup ended up and where the cup started out. Roll a marble through the tube and into the cup. Keep the tube at a low angle to start with. ![]() Line up your tube with the opening of the cup. Place the cup on the line.Ĭut your cardboard tube down to 12” long (if necessary). Make a line on the floor using duct tape or similar. This will serve as a sort of goal for the marble. When the cup is turned over, it will look like a cone-shaped house with a door. So that marble teetering at the top of the ramp has the potential energy of gravity - which is the force that will pull it down the ramp with no effort from you (once you've tipped it onto the ramp).Ĭut a small square opening into the drinking edge of the paper cup, large enough for a marble to pass through easily. (Remember gravity? It is the force that pulls everything down toward the earth.) Think about the marble sitting at the top of an inclined plane - when you bump it ever so slightly and it starts to roll, what happens? It starts to roll faster and faster down the ramp, right? (But if you did this same experiment on a flat surface, the marble would barely move, right?) It is gravity that is pulling the ball down the ramp. Gravity and potential energy are related. So – potential energy is the energy that is saved up in still objects, and kinetic energy is the energy that pours out of moving objects (energy in motion). When the rubber band is released and pours out all that energy it had stored up, or when the marble begins to fly down the inclined plane, that energy is kinetic energy. Kinetic energy is the energy of an object in motion. Another example is a marble teetering at the top of an inclined plane. An example of potential energy is a stretched-out rubber band - the farther you stretch it, the more potential energy it has. Potential energy is the energy that is stored in an object. In this experiment, the inclined plane makes work easier by allowing gravity (without any help from you) to move the marble down the ramp. They are called simple machines because they either have few or no moving parts. Simple machines are tools that make your work easier. In this science experiment, kids will make marble ramps and explore inclined planes and energy.Īn inclined plane is a type of simple machine. ![]()
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