# Ball Bounce Lab Part 2

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```					Conclusions (explain why your hypothesis was correct or was not correct, supply supporting details using
data you collected…be sure to include information about your independent and dependent variables in the
conclusion):
1) Look back at your hypothesis – what did you say would happen?
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2) Did your outcome (data) agree or disagree with your original hypothesis? Use the
information from the chart/data table to support this information.
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3) Identify any flaws or problems in this experiment (mistakes made, flawed procedure)?
AND. . . how could the design of the experiment be improved to avoid them?
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Conclusion       4) After completing this lab, STATE how a ball’s bounce is affected by the
type of ball that is dropped.
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5) What was the Ind. Variable?_______________________________________________
6) What was the Dependant Variable? _________________________________________
7) What was your Control (starting point)?______________________________________
8) List 2 constant variables that were maintained ________________________________
_____________________________
Record Observations                Type of ball versus Height of bounce
On a Data Table:
Type of ball                   Height of Drop              Height of Bounce

25 cm

diagram, video, PowerPoint, model, etc.) DOUBLE LINE GRAPH:

Title:
Label:

Label:
Name __________________________________________ Hour _________________

Title:                     Drop versus Bounce Part 2

Scientific Problem (includes independent & dependent variable as a question):

Does a tennis ball or golf ball bounce higher at different heights?
Hypothesis (includes independent & dependent variable in an “IF”, “THEN” sentence):

If I bounce a tennis and golf ball at different heights, then the _______________ ball
will bounce higher.

Experiment (includes materials list, procedure, and table for recording):

Materials:               Procedure:

o Hard                       1. Gather materials.
surface
o tennis                     2. Place the meter stick with the 1 cm mark closest to the hard
Ball                            surface (Constant Variable).
o Meter
Stick                      3. One partner will hold the stick and the ball, the other needs
o Golf ball
to watch and measure how high the ball will bounce
(Dependent Variable).
4. Line the bottom of the ball up to the 25 cm mark on your
meter stick.
5. Carefully drop the ball. Measure the height of the bounce
the ball gets (Dependent Variable). Repeat this several
times until you are certain you have an accurate reading.
Record this information in the “Interpretation” portion of
6. Continue to drop and record your bounces for 4 heights,
Control trial?
7. Redo a trial if you feel your observation wasn’t clear.
Constants?
8. Repeat the procedure with the other ball. (I. V.)
Know what they
Clean
are.

```
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 views: 4 posted: 8/5/2012 language: English pages: 3
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