# Science experiment

Jan 29th, 2014
Steve1995
Category:
Other
Price: \$30 USD

Question description

Background

Think about different materials that are used to make sports balls. Why don’t we use just one type of material for tennis balls, baseballs, and golf balls? Since each ball must behave differently in play, the material making up each one must be different, too. In this experiment, you will characterize how different materials behave when they are dropped.

You will consider two variables—drop height and bounce height—to try to determine how drop height affects bounce height. You probably understand that a higher drop height will result in a higher bounce height, but in this experiment, your objective is to find out how one affects the other. For example, is the bounce height equal to 100% of the drop height or 50% of the drop height? Does the relationship change at different heights?

The way the ball bounces says a lot about matter and energy. The fact that the ball drops at all shows that a force is pulling it toward the ground. The bounce tells you something about that force. It also tells you about the matter that makes up the ball and the surface it bounces on. The matter that composes the ball must store the energy on impact and then release the energy in a way that allows the ball to bounce.

This lab will be done in a virtual lab environment. In this environment, great care has been taken to insure that all of the objects behave as they would in an actual lab. While some effects are not re-created, such as an orange bruising if dropped from a great height, all results are scientifically accurate and vary as they would in an actual lab setting.

Answer the questions. When you are finished, submit this assignment to your teacher by the due date for
full credit.

Note: As this is the first lab, you will have an opportunity to revise and resubmit the assignment for a higher grade in the Drop and Bounce Revisited lab.

1.
Write the goal of the lab or the question you tried to answer.

2.Which observations, experience, or lesson material helped you form your hypotheses?

3.  Predict how your graph will show a relationship between drop and bounce.

 Type of ball golf ball Hypothesis Type of ball plastic ball Hypothesis Type of ball rubber ball Hypothesis Type of ball clay ball Hypothesis

1.  Use the data from your experiment to complete this data table.

 Type of ball Drop height (cm) Bounce height (cm) golf ball 0 0 20 40 60 80 100 plastic ball 0 0 20 40 60 80 100 rubber ball 0 0 20 40 60 80 100 clay ball 0 0 20 40 60 80 100

(6 points)

 Score

a.  Plot each ball on this grid.
b.  Use a different symbol for each ball.
c.  Make a key so that you are able to tell the plots apart.

(Top Tutor) Daniel C.
(997)
School: Cornell University

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