| width of a light switch lever | ~1 cm |
| ping pong ball | ~ 3 cm |
| softball | ~10 cm |
| basketball | ~30 cm |
| width of a door | ~ 1 m |
| height of a doorway | 2+ m |
| typical classroom | about 6 m? |
| typical school | about 100 m? |
| depth of the Grand Canyon | over 1 km |
| height of Mt. Everest | 8.78 km |
| deepest depth of Pacific Ocean | 11 km |
| Denver to Kansas City | 890 km |
| Length of California | 1000 km |
| Nashville to New York City | 1,213 km |
| diameter of the Moon | 3,476 km |
| San Francisco to New Your | 4,100 km |
| diameter of Earth | 12,756 km |
| diameter of Jupiter | 142,800 km |
| distance to the Moon | 384,402 km |
| diameter of the Sun | 1.4 million km |
| distance to the Sun | 152 million km |
| distance from Sun to Saturn | almost 1.5 billion km |
| nearest star (other than our sun) | 38 million million km -- off the scale |
| Milky Way galaxy | 100,000 light year or a million billion km --- way off the scale |