3 types of Glass Made? Break? Found?

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Presentation transcript:

3 types of Glass Made? Break? Found? FLOAT TEMPERED LAMINATED

Please draw this

Next, please draw this

What happened ? The glass bends, and the EXIT side cracks first – radially The continued motion of bullet pulls the ENTRY with it – so it cracks – concentrically 3R rule – Radial cracks, form Right angles, on Reverse (EXIT) side of force So, CRATER forms on the EXIT side

Now…Label your RADIAL cracks and CONCENTRIC cracks

Order of bullet holes

FINALLY…Please draw the 3 bullet holes on page 146 of the text book, and explain to your neighbor the order of the shots fired.

http://www.wimp.com/slowimpacts/ Bullets passing through all kinds of substances Metal, glass, water, ice …