Name _____________________________________________________ Date _________________________
Bouncy Ball!
Observation:
Brad and Sara were playing at recess with the same type of ball. Brad noticed that when
Sara bounced the ball close to the ground, it didn’t bounce as high as when she bounced it
from shoulder level. Brad talked with her, and they decided to do extra credit for their
science class and create an investigation to find out if this is always true.
Question: (What are you going to test?)
Does the height that you drop a ball affect its return bounce?
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Hypothesis (prediction): (If manipulated variable.. then, responding variable…)
If the height that a ball is dropped increases, then the height the
ball bounces will increase
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Materials
• Bouncy ball
• Meter Stick
Procedure
1. Locate 100cm, 75cm, & 50cm on the meter stick
2. Drop bouncy ball from 100cm.
3. Measure & record the max. height of bounce
return as trial 1
4. Repeat steps 2 & 3 three more times, for a total
of 4 trials
5. Repeat steps 2-4 for a 75cm drop & a 50cm
drop.
6. Calculate and record averages for each height
Date Collection: Quantitative results. Use charts, tables and graphs to organize your data.
Drop
Height
100cm
75cm
50cm
Height of bounce return in cm
T1
T2
T3
T4
AVG.
Sketch: Draw a sketch of the
Conclusion: (hypothesis right or wrong, high/low data with difference,
experiment you performed.
connect and compare with key words)
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Staple your graph
to this worksheet