Orders of Magnitude

Orders of Magnitude |  |  |
| The difference in size between the smallest objects in the universe, a quark for example, and the largest object, the universe itself, is truly amazing. |
| Quarks - Very Small |  | The Universe - Very Large |
| 0.00000000000000001 =10-18 | in meters | 100,000,000,000,000,000,000,000,000 =1026 |

| In physics, comparing the sizes of objects requres more than saying one object is twice the size of another object. Because of the large size differences, scientists usually use how many powers of ten or how many orders of magnitude to describe these size differences.
| Q1: How would one compare object B which is 1000 m to object A which is 1,000,000 m? Answer: Object B is 3 orders of magnitude larger than Object A.
| Q2: Compare the quark to the universe using the information above.

Molecular Expressions Orders of Magnitude (website) |
| In this animation, you can take a journey through 40 orders of magnitude, from the milky way to the subatomic world.
| Go To Animation

| Graphics Credits |
|  | Quark | University Of Edinburgh - News & Events http://www.ed.ac.uk/news/050527quark.htm |
|  | Universe | Charlies Cosmos Universe http://www.crecalde.com/Charlie/charlies_cosmos_universe.htm |