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Student Sheet Topic:
Conservation of Energy – Potential energy
to Kinetic energy
Exploration Activity: Using the materials provided, make a ramp of various inclines, starting with 30 degree incline. Station 1 1. Now position the aluminum can against the edge of the wall or a sturdy object, and at the foot of the incline. 2. Release the toy car from the top of the incline and let it roll freely until it hits the can. Record the dent, if any, that you observe in the table below. 3. Next, adjust your angles as specified in the table and repeat the the activity. Record your observation each time.
Station 2 1. Now remove your incline setup. You are required in this activity to use the cart provided to make a dent on the can on a flat surface, like the floor, without lifting up the cart. 2. Now use your cart to make a bigger dent on the can. How you do this is up to you but you cannot lift up the cart from the floor. The car must roll. Q: What does the toy car possess at the top of the incline? A:_____________________________________________ Q: Why was the toy car able to cause dents on the can? A:_______________________________________________ Q: Give reasons why you think some dents were more severe than others. A:_________________________________________________
Application: In this activity you will drop weights of different sizes on pegs standing on molding clay.. 1. Slightly stick the given peg into the molding clay provided. 2. Drop a small size weight (1kg) on it and measure how far it goes into the molding clay. Record your answer. 3. Now repeat this procedure using various weights as shown on table.
Q: What relationship do you see between mass of object, height above peg, and how deep the peg is driven? A:___________________________________________________ A:_________________________________________________ Q: What examples in real life can you see the idea of potential energy being used? A___________________________________________________ |