1. Walk In…
Take out notebook
At the back of notebook, write today’s date, and copy the question and answer in sentences:
What are some of the things you should always include when making a graph?

2. Possible Answers
Title
Axis labels
Correct data
Key
Neatness
Color

3. Tennis Ball Drop

4. Tennis Ball Drop
Purpose: How will changing the height a ball is dropped from change how high it bounces?
In today’s lab, you will be given a tennis ball and meter stick. You will drop the ball onto a table from different heights and record how high the ball bounces.
You will do three trials for each drop height and also collect the average bounce heights.

5. Hypothesis Hypothesis:
If a ball is dropped from higher heights, then _______ because ______.

6. Variables Independent Variable (what we change):
Dependent Variable (what we measure):

7. Height ball was dropped from (cm) Height ball bounced (cm)
Trial 1
Trial 2
Height ball bounced
(cm)
Trial 3
Average
height of bounce 10 20 30 40 50 60 70 80 90
100

8. Draw a graph to show the height of the bounces.

9. Was your hypothesis supported?
Reflections and Questions – Answer in your notebook in complete sentences.
How does the height of the ball being dropped affect the height of the bounce?
Was your hypothesis supported?
Give an example of a qualitative observation you made in this lab.
Give an example of a quantitative observation you made in this lab.