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1 1 The new Southgate, Grade 5 website address is as follows: Page Features Include: Calendar Detailed Homework List Homework Help Resources Copies of Worksheets or Links to Get Them Curriculum Overview

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3 Line plot with the data collected in class. This is only a sample. Each student's data is unique. 3 X X X X X X X X X X X X X X BK LM VL VS

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5 Bar graph with the data collected in class. This is only a sample. Each student's data is unique. 5 This will be a computer generated graph.

6 The Control Pendulum 6 CONTROL DATA

7 7K Question: How will the mass of the bob affect the number of cycles completed in 15 seconds? Research (Observations):

8 7G Question: How will the mass of the bob affect the number of cycles completed in 15 seconds? Research (Observations):

9 8K Hypothesis: When the mass of the bob gets heavier, the number of cycles in 15 seconds will be less because heavier objects are harder to lift. Experiment: Materials control pendulum from p. 6 (standard) pencil smooth surface off the ground with an edge 1 penny tape Procedure 1. Set the pendulum system up as shown. 2. Set a timer for 15 seconds. 3. Add another penny to the bob of the control pendulum. 4. Let go of the penny from a position level to the surface and start timer. 5. Record the number of cycles completed by the pendulum in 15 seconds. 6. Repeat steps 1-5 one time.

10 8G Hypothesis: The mass of the bob will not affect the number of cycles completed in 15 seconds because the weight of an object does not affect its speed during a fall. Experiment: Materials the control pendulum (standard) from p. 6 pencil flat surface with an edge 1 additional penny tape Procedure 1. Put together the pendulum system as shown. 2. Add a second penny to the bob. 3. Make sure to hold the pendulum at a 90 angle to the floor. 4. Set a timer to 15 seconds. 5. Release the bob and start timer. 6. Record the number of cycles completed in 15 seconds. 7. Repeat steps 3-6 three times.

11 Results: 9K VARIABLE TIME BOB MASS STRING LENGTH RELEASE POSITION CYCLES CONTROL 15 sec. 1 penny 38 cm PENNY BOB MASS 15 sec. 2 penny 38 cm. 90 Conclusion: When the mass of the bob is changed, the number of cycles in 15 seconds will stay the same because the bob with two pennies completed the same number of cycles as the control pendulum (standard).

12 Results: 9G VARIABLE TIME BOB MASS STRING LENGTH RELEASE POSITION CYCLES CONTROL 15 sec. 1 penny 38 cm PENNY BOB MASS 15 sec. 2 penny 38 cm. 90 Conclusion: The mass of the bob did not affect the number of cycles because the number of cycles did not change when the bob mass changed from the control pendulum.

13 10K Question: How will the release position affect the number of cycles completed in 15 seconds? Research (Observations):

14 10G Question: How will the release position affect the number of cycles completed in 15 seconds? Research (Observations):

15 11K Hypothesis: When the release position gets lower the number of cycles gets lower because it appears that a bob released from a higher position goes faster. OR When the release position changes the number of cycles completed in 15 seconds will be less because if released from a lower position a pendulum will travel less distance. Experiment: Materials pencil control pendulum (standard) tape smooth, flat surface with an edge at least 40cm off the ground Procedure 1. Set the pendulum system up as shown on p Set a timer for 15 seconds. 3. Let go of the penny from a position 45 to the surface and start timer. 4. Record the number of cycles completed by the pendulum in 15 seconds. 5. Repeat steps 1-4 one time.

16 11G Hypothesis: A lower release position will decrease the number of cycles in 15 seconds because the bob moves faster when released from a higher position. Experiment: Materials the control pendulum from p. 6 (standard) tape pencil flat surface with an edge Procedure 1) Put together the pendulum system as shown on p. 8. 2) Make sure to hold the pendulum at 45 to the ground. 3) Set a timer for 15 seconds. 4) Start the timer and release the bob. 5) Record the number of cycles completed in 15 seconds. 6) Repeat steps 1-5 three times.

17 Results: 12K VARIABLE TIME BOB MASS STRING LENGTH RELEASE POSITION CYCLES CONTROL 15 sec. 1 penny 38 cm RELEASE POSITION 15 sec. 1 penny 38 cm. 45 Conclusion: When the release point of the bob is changed, the number of cycles stays the same because release points of both 90 and 45 completed 12 cycles.

18 Results: 12G VARIABLE TIME BOB MASS STRING LENGTH RELEASE POSITION CYCLES CONTROL 15 sec. 1 penny 38 cm RELEASE POSITION 15 sec. 1 penny 38 cm. 45 Conclusion: The release position did not affect the number of cycles completed because when the pendulum was released from a lower position, the number of cycles did not change.

19 13K Question: How will the pendulum length affect the number of cycles completed in 15 seconds? Research (Observations):

20 13G Question: How will the pendulum length affect the number of cycles completed in 15 seconds? Research (Observations):

21 14 Hypothesis: A hypothesis should be written here. Experiment: Materials a pendulum with a string length other than 38cm An experiment (materials list and procedure) should be written here.

22 Hypothesis: Hypothesis that answers the questions, restates key words, and is supported by the research is written here. Experiment: 14 A materials list and step by step procedure are written here.

23 Results: 15 Conclusion: Conclusion that answers the questions, restates key words, and is supported by the results is written here.

24 Question: How will sphere size affect the distance a cork moves after being struck by a sphere moving down an inclined plane? 16 Research (Observations): On a pendulum, bob mass does not affect the number of cycles completed. According to the video, an object's mass does not affect its speed. A mosquito (small mass) traveling at 30 miles per hour will probably not cause as much damage as a bowling ball (large mass) traveling at 30 miles per hour. A 70g sphere exerts 1.48 N of force after rolling down an inclined plane while a 10g sphere on that same inclined plane exerts.29 N of force. Hypothesis: The sphere size will not affect the distance a cork moves after being struck by the sphere moving down an inclined plane because according to the video, an object's mass does not affect its speed. OR The greater the mass of a sphere the further the cork will go after being struck by the sphere moving down an inclined plane because a 70g sphere exerts 1.48 N of force after rolling down an inclined plane while a 10g sphere on that same inclined plane exerts.29 N of force. Experiment: Materials tape one cork one inclined plane (as shown) one 70g sphere one 30g sphere one 10g sphere one 1m long half pipe Procedure 1) 4 cm 15 cm

25 17 Results: "t" chart and computer generated graph should be here. Conclusion: The greater the mass of a sphere the further the cork will go after being struck by the sphere moving down an inclined plane because the 70g sphere moved the cork 57cm, the 30g sphere moved it 37cm, and the 10g sphere moved it 14cm.

26 Question: How will release position affect the distance a cork moves after being struck by a sphere moving down an inclined plane? Research (Observations): The release position does not affect the number of cycles a pendulum completes according to the experiment on p. 12. More damage will occur to an object dropped from a higher release position than from a lower one. Hypothesis: The release position will not affect the distance a cork moves after being struck by the sphere moving down an inclined plane because the release position does not affect the number of cycles a pendulum completes according to the experiment on p. 12. OR The greater the release position the further the cork will go after being struck by the sphere moving down an inclined plane because more damage will occur to an object dropped from a higher release position than from a lower one. 18 Experiment: Materials same as p. 16 except just the 70g sphere Procedure: Release the 70g sphere from release position 6 (top) of the inclined plane. 5. Record how far the cork moves. 6. Repeat steps 4 & 5 for each of the following release positions: 4 & Repeat steps 4-6 eight times.

27 19 Results: This will be a "t" chart, a hand generated graph, and a computer generated graph Conclusion: The greater the release position, the farther the cork will move after being struck by a 70g sphere because at release position 2 the sphere only moved 22cm, but at release position 6, the cork moved 60cm.

28 Question: How do the parts of the flipper system work together to launch an object? 20 Craft Stick Depressor Projectile Base Launch Arm Write an answer below the drawing explaining where the energy comes from and how it moves through this system to the projectile.

29 21K Question: What is the relationship between the length of the launch arm and the amount of energy transferred to a projectile? Research (Observations): The launch arm is a leaf spring. It's harder to deform a short launch arm than a long launch arm. Hypothesis: As the launch arm length increases the energy transferred to the projectile will decrease because it's harder to deform a short launch arm than a long launch arm.

30 21P Question: What is the relationship between the length of the launch arm and the amount of energy transferred to a projectile? Research (Observations): The launch arm is a leaf spring. It's easier to depress a long launch arm than a short one. A longer launch arm is more flexible and easy to depress. Hypothesis: The longer the launch arm length the greater the energy transferred to the projectile because a longer launch arm is more flexible and easy to depress. OR The longer the launch arm length the lesser the energy transferred to the projectile because it's easier to depress a long launch arm than a short one.

31 Experiment: Materials List the materials for your particular question. 22 Procedure 6cm 8cm 10cm Results "t" chart and computer generated graph should be attached here. Conclusion The longer the launch arm length the lesser the energy transferred to the projectile because the 10cm launch arm made the projectile travel a shorter distance than the 6cm launch arm.

32 The launch arm is a leaf spring. Depressing a launch arm to the base is harder than depressing it part way. 23 Hypothesis: The farther the launch arm is depressed the greater the energy transferred to the projectile because depressing a launch arm to the base is harder than depressing it part way.

33 Experiment: Materials List the materials for your question. 24 Procedure Results "t" chart and computer generated graph should be attached here. Conclusion As the launch arm depression increases, the distance the cork travels will increase because the cork with the depression of 3mm traveled 32cm, the cork with the depression of 6mm traveled 63cm, and the cork with the depression of 9mm traveled 123cm.