title: by:. experimental design problem- what is the effect of ___________ on the...
DESCRIPTION
Experimental Design Constants (3) : same ______, _________, and ______ Hypothesis: If ___________is ___________, then ____________ will _______________.TRANSCRIPT
Title:
By:
Experimental Design• Problem- What is the effect of ___________
on the ____________________________?
• IV:
• Levels of the IV [Put your Control in ( ) ]:
• Reason control was selected:
• DV:
Experimental Design• Constants (3) : same ______,
_________, and ______
• Hypothesis: If ___________is ___________, then ____________ will _______________.
• Material List: Tennis Ball, Ping Pong Ball, Golf Ball, Racquet Ball, masking tape, meter stick
Materials
Procedures 1. Gather materials2. Tape a meter stick up against the wall3. Hold the ball at 100 cm, then drop it.4.Record height of the bounce for 5 drops5.Repeat steps 3-4, for each type of ball for 3 trials6.Calculate the averages.7. Analyze the data
Trial 1Type of
BallDrop 1 Drop 2 Drop 3 Drop 4 Drop 5 Averages
Tennis 32 40 37 33 35 35
Ping- Pong
40 49 47 51 52 48
Golf ball 69 61 69 62 65 65
Racquet 74 86 76 82 78 79
Height of Bounce (cm)
Trial 2Type of
BallDrop 1 Drop 2 Drop 3 Drop 4 Drop 5 Averages
Tennis 35 37 42 31 39 37
Ping- Pong
43 46 49 41 50 46
Golf ball 60 63 61 71 59 63
Racquet 83 82 79 83 79 81
Height of Bounce (cm)
Trial 3Type of
BallDrop 1 Drop 2 Drop 3 Drop 4 Drop 5 Averages
Tennis 28 35 31 29 32 31
Ping- Pong
38 41 44 47 49 44
Golf ball 65 58 66 60 61 62
Racquet 71 83 73 81 75 77
Height of Bounce (cm)
Averages of 3 TrialsType of
BallTrial 1 Trial 2 Trial 3 Final
AveragesTennis 35 37 31 34
Ping-Pong 48 46 44 46
Golf ball 65 63 62 63
Racquet 79 81 77 79
Height of Bounce (cm)
Averages of Trials
Heightof
Bounce (cm)
Type of Ball
Final Averages
Heightof
Bounce (cm)
Type of Ball
Discussion – • Averages of each ball bouncing : Racquetball (79 cm), Golf Ball (63 cm), Ping-Pong ball (46 cm), and the Ping-Pong Ball (34 cm).• Research stated rubber ball compresses air
inside it as it hits the floor (air is stored as Potential Energy) Racquetball bounced highest because it was able to compress the most
• Tennis Ball bounced lowest because it had most drag caused by fuzz
• More ball could compress, higher the ball bounced (Directly Proportional).
Summary of Findings/Conclusion
• Hypothesis: If ___________is ___________, then ____________ will be _______________.
• Hypothesis was accepted/rejected, because the _______________ bounced _______________ than the __________________