Ping Pong Challenge!

Get the ping pong ball to go as far as possible, while keeping as much salt in the tube as possible!

Rule:

1.  Blow once ONLY into the tube!

2.  Use one type of beads at a time! Bring up your beads and trade for a different type of beads when you are done with it.

3.  Blow at the same force for all of your attempts!

Observations:

Describe the bead you are using (color, size, shape):

Draw a sketch and describe your observation:


Observations:

Describe the bead you are using (color, size, shape):

What did you change on this attempt?

Draw a sketch and describe your observation:


Observations:

Describe the bead you are using (color, size, shape):

What did you change on this attempt?

Draw a sketch and describe your observation:

Be ready to whiteboard your observations!


We need a variable we can measure to compare which beads are working better and how much better.

Delivery Ratio = Distance ping pong ball traveled

% of salt that came out of the tube

1.  Using the variable wheel, determine which variable you are manipulating:

2.  What is your hypothesis / prediction?

If ______(your manipulated variable) increase, then the delivery ratio will ______, because ______

______.

3.  What are your control variables (the other variables on the variable wheel)?

4.  Describe your experimental plan:


Beads test

For the manipulated variable your group decided to test:

1.  Record your manipulated variable (for example, if your variable is size, measure the size of the beads you are using)

2.  Put the beads into the tube, then pour salt into the tube

3.  Blow into the tube and record the distance the ping pong ball travels

4.  Estimate and record the amount of salt that came out

5.  Calculate and record the delivery ratio

Delivery Ratio = Distance ping pong ball traveled

% of salt that came out of the tube

Data Table:

Your Manipulated Variable: ______(units: ______) / Distance Ping Pong Ball Traveled (____) / Amount of Salt that Came out (____) / Delivery Ratio

Data Table (Extension for 2nd Variable):

Your 2nd Manipulated Variable: ______(units: ______) / Distance Ping Pong Ball Traveled (____) / Amount of Salt that Came out (____) / Delivery Ratio


Discussion Questions:

1.  What are things you have seen in your surroundings that works the same way as the beads in the tube?

2.  For the beads that worked best in keeping the salt from coming out of the tube, what made it work better?

3.  For the beads that worked best in letting air go through so the the ping pong ball travels further, what made it work better?


Filter’s Blocker Builder!

Supplies:

·  Cheese Clothes / ·  Stapler
·  Air Conditioning Filters / ·  Steel Wools
·  Cotton Balls / ·  Pipe Cleaners
·  Paper Towel / ·  Scissors
·  Coffee Filters / ·  Ruler
·  Aluminum Foil / ·  Tape

Design:

Draw a sketch of your design and label the materials you used.


Discussion Questions:

1.  Explain what you used and give a description of its size and shape.

2.  Why did you use the sizes, shapes, and materials you chose?

3.  How did your blocker work?

4.  How can you make it better if you were to do this again?