tennis ball bounce challenge find the relationship between the height from which a tennis ball is...
TRANSCRIPT
TENNIS BALL BOUNCE
CHALLENGEFind the relationship between the height from which a tennis ball is dropped and the height of its resulting bounce.
1. STATE THE 1. STATE THE PROBLEMPROBLEM
How would you state this How would you state this challenge in the form of a challenge in the form of a question?question?
Does the height Does the height from which a from which a tennis ball is tennis ball is dropped affect dropped affect how high it will how high it will bounce?bounce?
2. GATHER 2. GATHER INFORMATIONINFORMATION
What do you know What do you know about…about…
the material in the material in tennis balls?tennis balls?
they are made of they are made of inflated rubber inflated rubber a a stretchy substance stretchy substance and they are covered and they are covered in feltin felta soft materiala soft material
2. GATHER 2. GATHER INFORMATIONINFORMATION
What do you know What do you know about…about…
gravity?gravity?
it’s a force that it’s a force that pulls everything on pulls everything on Earth toward Earth toward Earth’s centerEarth’s center
“ “What goes What goes upup, ,
must come must come downdown!”!”
2. GATHER 2. GATHER INFORMATIONINFORMATION
What do you know What do you know about…about…
Newton’s First Law of Newton’s First Law of Motion?Motion?
says the motion of the says the motion of the tennis ball will not tennis ball will not change unless a force change unless a force is exerted on it causing is exerted on it causing the tennis ball to the tennis ball to speed up, slow down, speed up, slow down, or change directionor change direction
3. FORM A 3. FORM A HYPOTHESISHYPOTHESIS
Based on the Based on the information gathered, information gathered, what would your what would your hypothesis be?hypothesis be?
IFIF the height from the height from which a tennis ball is which a tennis ball is dropped is increased, dropped is increased, THENTHEN the height the the height the tennis ball bounces tennis ball bounces back up will also back up will also increase.increase.
4. TEST THE HYPOTHESIS 4. TEST THE HYPOTHESIS WITH AN EXPERIMENTWITH AN EXPERIMENT
At this time, your teacher will give instructions on how you are going to conduct your experiment.At this time, your teacher will give instructions on how you are going to conduct your experiment.
Materials needed to conductMaterials needed to conduct
the experiment:the experiment:
1.1. ““Tennis Ball Bounce” sheetsTennis Ball Bounce” sheets
2.2. PencilPencil
3.3. Tennis ballTennis ball 4.4. Measuring device Measuring device
PROCEDUREPROCEDURE1.1. drop a tennis ball from drop a tennis ball from
the various heights of the various heights of 24, 36, 48, & 60 inches24, 36, 48, & 60 inches
2.2. observe & measure observe & measure how high the tennis ball how high the tennis ball bounces back up after bounces back up after hitting the ground using hitting the ground using the measuring devisethe measuring devise
3.3. record your findings in record your findings in your tableyour table
4.4. repeat each drop for repeat each drop for the various heights 3 the various heights 3 timestimes
IMPORTANTIMPORTANTDo not Do not forget to forget to record all record all of your of your data.data.
Well…What are you Well…What are you waitin’ for? waitin’ for?
LET’S GET TO LET’S GET TO EXPERIMENTIN’EXPERIMENTIN’
What Were Your Findings?
Now that your experiment has been conducted, let’s take a look at an example of what your table may look like.
Your table may look Your table may look something like this:something like this:
Bounce Height of Tennis Bounce Height of Tennis Ball (in)Ball (in) Drop in
Height of Tennis Ball
(in)
Trial 1
Trial 2
Trial 3 Average
24 14 14 15 14.33
36 22 21 22 21.67
48 27 27 28 27.33
60 32 33 34 33
Can you answer this Can you answer this question?question?
What is the What is the independent independent (manipulated) (manipulated) variable in this variable in this experiment?experiment?
It is…It is…
the height from the height from which the tennis which the tennis ball is dropped.ball is dropped.
Can you answer this Can you answer this question?question?
What is the dependent What is the dependent (responding) (responding) variable variable in this experiment?in this experiment?
It is…It is…
the height the the height the tennis ball bounces tennis ball bounces back up after back up after hitting the ground.hitting the ground.
Can you answer this Can you answer this question?question?
What are the controlled What are the controlled (constant) (constant) variables in variables in this experiment?this experiment?
They are…They are…•the measuring devisethe measuring devise•the measuring units the measuring units
usedused•the type of ballthe type of ball
5. ANALYZE YOUR 5. ANALYZE YOUR DATADATA
Your graph may look something like this…Your graph may look something like this…
2468
1012141618202224262830323436
Height of Bounce
(in inches)
Tria
l 1
dro
p o
f 24
in
Tria
l 2
dro
p o
f 36
in
Tria
l 3
dro
p o
f 48
in
Tria
l 4
dro
p o
f 60
in
TENNIS BALL BOUNCE
6. DRAW 6. DRAW CONCLUSIONSCONCLUSIONS
What can you What can you conclude from the conclude from the results of your results of your experiment?experiment?The hypothesis was The hypothesis was correct!!correct!!TThe greater the he greater the height from which height from which a tennis ball is a tennis ball is dropped, the dropped, the higher it will higher it will bounce!bounce!