Erin and Bailey
What Makes Glass Break?
Different Types of Glass Breakage
Stress Cracks- Usually only happens in heat strengthened glass. They come from the edge of the glass and spread outward
Edge Damage- When the glass breaks from the edges inward
Spontaneous Breakage- When glass (especially tempered glass) breaks all by itself
How strong can glass get?
- When glass is broken the cracks move faster than 3,000 MPH. A camera would shave to shoot at a millionth of a second to catch it.
- Before people learned to manufacture glass they found it in nature.
- When lightning strikes sand, it forms glass tubes call fulgurites or petrified lightning.
- Natural glass can also occur around volcanic directions.