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Typology: Exercises
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Name: ____________________________________________ Date: _______________________ Class: ____________________
Bone Crusher Activity — Fracture Worksheet Answer Key 1
Name: ____________________________________________ Date: _______________________ Class: ____________________
Bone Crusher Activity — Fracture Worksheet Answer Key 2
Bone (from cat)
Bone Mass (g)
Bone Volume (ml)
Bone Density (g/ml)
Predicted Fracture Force (N or lbs)
Experimental Fracture Force* (N or lbs)
femur (^) in tension100 lbs
tibia (^) in compression^120 lbs
fibula (^) in compression85 lbs
humerus (^) in tension80 lbs
rib (^) in compression15 lbs
tail (^) in compression35 lbs
Were your predictions of bone strength accurate? Explain. Answers will vary, depending on students ’ predictions.
Bone (from cat) Description of How^ the Bone Fractured^ Type of Bone Fracture
femur Answers will vary. Answers will vary.
tibia
fibula
humerus
rib
tail
Types of bone fractures : avulsion, comminuted, fissure, greenstick, impacted, oblique, transverse
Example answers : The bone broke into multiple pieces; it broke at the end or the middle; the break is straight across, angled or spiral; the break was not all the way across, etc.
Example answers : avulsion, comminuted, fissure, greenstick, impacted, oblique, transverse
Answers will vary.
Note : Compression mode requires more force to break bones than tension mode.