Mrs. Milligan-Joye's Classroom



Notes: Analyzing Broken Glass Date:

I. Types of Fractures

a. Radial

i. Occur ____________________________

ii. Extend __________________________ from the _______________ ______________________

iii. _____________________________ sides of the impact fails __________________

b. Concentric

i. Form a _________________________ around the ____________________ ____________________

ii. _________________ of the impact fails _____________________

c. Which is which?

d. Sequence of Fractures

i. Radial lines will always end at _________________ _____________________ __________________.

ii. In what order did the following bullet holes occur?

e. Direction of Force

i. Small projectiles produce an ________________________ and an _________________________

1. Description of entry:

2. Description of exit:

ii. Radial fractures indicate direction of ________________________

1. 3R rule:

• R

• R

• R

Notes: Analyzing Broken Glass Date:

II. Types of Fractures

a. Radial

i. Occur ____________________________

ii. Extend __________________________ from the _______________ ______________________

iii. _____________________________ sides of the impact fails __________________

b. Concentric

i. Form a _________________________ around the ____________________ ____________________

ii. _________________ of the impact fails _____________________

c. Which is which?

d. Sequence of Fractures

i. Radial lines will always end at _________________ _____________________ __________________.

ii. In what order did the following bullet holes occur?

e. Direction of Force

i. Small projectiles produce an ________________________ and an _________________________

1. Description of entry:

2. Description of exit:

ii. Radial fractures indicate direction of ________________________

1. 3R rule:

• R

• R

• R

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