One
Million Balls
Mrs.
Sandy Fischl / Mr. Benson
Port Hope High School
Ontario
Names:
Pick a ball from the “Sports-Balls Data Sheet”.
Name of your Sports Ball: Picture of your Sports Ball
Hypothesis: Could 1 million of these balls fit into your
empty classroom?
Yes or No?
Explain why you answered yes or no.
Exploration: Find out about how many balls of that kind would fill your classroom. Check the Data Sheet for some important data you can use in your exploration.
Work:
Conclusion:
How many of your sports balls would fill your classroom?
Questions: 1. One million of which kinds of balls listed on the data sheet could fit into your classroom?
2. Could you fit 1 billion balls of any size into the buildings at your school? Why or why not?
SPORTS BALLS DATA SHEET
|
Ball |
Approx. Diameter (cm) |
Average Weight (g) |
Construction |
Approx. # of balls in 1 m3 |
|
|
Interior |
Exterior |
||||
|
Baseball |
7.6 |
145 |
rubber or cork center wrapped with yarn |
leather cover |
2200 |
|
Basketball |
24 |
596 |
inflated rubber |
leather or rubber cover |
70 |
|
Billiard
|
6.4 |
163 |
solid ivory or hard rubber |
same as interior |
3800 |
|
Cricket |
7.3 |
160 |
cork center wrapped with yarn |
leather cover |
2500 |
|
Croquet |
8.6 |
340 |
hardwood or hard rubber |
same as interior |
1500 |
|
Field Hockey |
7.6 |
160 |
cork center wrapped with twine |
leather or rubber cover |
2200 |
|
Golf |
4.3 |
46 |
solid or liquid rubber |
rubber cover |
12200 |
|
Handball |
4.8 |
65 |
solid rubber |
same as interior |
8800 |
|
Lacrosse
|
6.4 |
143 |
solid rubber |
same as interior |
3800 |
|
Racquetball
|
5.7 |
40 |
hollow |
rubber |
5200 |
|
Soccer |
22 |
425 |
inflated shell |
leather cover |
80 |
|
Softball, large |
13 |
279 |
kapok- or cork- and-rubber center |
leather cover |
400 |
|
Softball, regular |
9.8 |
187 |
kapok- or cork- and-rubber center |
leather cover |
1000 |
|
Table Tennis |
3.7 |
2 |
hollow |
plastic |
19700 |
|
Tennis |
6.5 |
57 |
hollow rubber |
cloth cover |
3800 |
|
Volleyball
|
21.9 |
256 |
inflated rubber |
leather or rubber cover |
80 |
|
Water Polo |
22.5 |
434 |
inflated rubber |
rubber fabric cover |
80 |