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Name:Kinetic and Potential Energy
Part One:1.) Predict how you will think changing the mass on the end of the pendulum will affect howmany times it swings back and forth in one minute:
2.)
3.)4.)s.)
Decide how many weights you and your group will use for Trial l. Use multiples of 20(20, 40,60, 80...) Each 20 weights has a mass of 50 g.Record how many weights your group is using:Place the weights on the ring. Attach the ring to the lowest gold ring on the pendulum.Pull the pendulum back so the weights are I meter from where they started. This is yourstarting position.
6.) Let go of the pendulum. As soon as you let go, start timing for one minute. Count thenumber of times the pendulum swings back and forth. Record this information in thetable below for Trial I.7.) Repeat this two more times.8.) Change the number of weights your group is using for Trial2. Record the number:
six and seven. Fill in the table each time.Part One
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10.) Calculate the average number of swings and the average time. (To calculateaverage, add the three numbers together and divide by 3)
Part Two1.) Predict how you think changing the height of the mass will affect the number of times thependulum swings back and forth in one minute:
2.) Place 40 weights on the ring. Attach the ring with the weights to the gold ring on thebottom.3.) Measure the height from the floor to the ring using feet. Record this in the Height Table.4.) Pull the ring back so that it is one meter from where it staned.5.) Let go of the pendulum. As soon as you let go, start timing for one minute. Count thenumber of times the pendulum swings back and forth. Record this information in the
table below.6.) Repeat this two more times.7.) Move the weights to the smallest ring. Use the binder ring to hold the other rings up.
Repeat steps three to six.8.) Move the weights to the largest ring. Use the binder ring to hold the other rings up.
Repeat steps three to six.9.) Move the weights to the top ring. Use the binder ring to hold the other rings up. Repeat
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Questionsl.) In part one, does your data support or not support your hypothesis?
2.) What aflect did changing the mass have on the speed of the swings?
3.) In part two, does your data support or not support your hypothesis?
4.) What affect does the length of the pendulum have on the speed of the swings?
5.) Think of the school. There are several objects that move like a pendulum. What is oneof them? (Hint: Thhk Playground. ..)
6.) As you were counting swings, what happened to the speed of each swing?
7.) What is potential energy?
8.) Where does the pendulum have the most potential energy?
9.) What is kinetic energy?
10.) Where does the pendulum have the most kinetic energy?1 1.) Where does the pendulum have the least potential energy?
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10.) Where does the pendulum have the least kinetic energy?
Label the diagram below with the following labels:o Most Potential Energ5MPEo Least Potential Energ5LPEo Most Kinetic Energ5MKEo Least Kinetic Energ5LKE
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ravitational Potential Energy-Theamount of energy based on howhigh something isPg.124Skydivers
inetic Energy-The energy of
rris Wheel that is moving
nd-The movement of energy asibrations through solids, liquids, or
hem ica I Potentia I Energy-Energystored in the bonds of atomsPg. 135Charged Battery
tPg. L22I
lElectrical Energy-The resultIrelectric charges having energland movingI
lpe. rszI/rv
lastic Potential Energy-Energyavailable for use when somethingstretches and goes back to its origi-nal shapePg. 134 Bungee Cord
eat-Energy that moves from somejthing with a high temperature to asomething with a low temperaturePg. 136Toaster
ight-A form of energy we can seePg. 136Christmas Lights
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1.)
2.)
Name:
What picture do you predict will be on the most cards?
What picture had the most?
What picture had the least?
3.) What is the total number of pictures?
4.) What is the percentage of Christmas trees?
5.) What is the percentage of Snowmen?
6.) What is the percentage of Santas?
7.) What is the percentage of reindeer?
8.) What is the percentage of snow?
Frequency TableCard Tally Total Card Tally Total
ChristmasTree Presents
Snowman Reindeer
Santa Snow
9.) Was your prediction correct or not?