About The Earth
| Physical Constant | Value |
|---|---|
| Surface Gravity | 9.806 m/s^2 |
| Escape Velocity | 11.19 km/s |
| Temperature Range | -88° C to 58° C (-126° F to 136° F) |
| Element | Amount (%) |
|---|---|
| Oxygen | 46.6% |
| Silicon | 27.7% |
| Aluminum | 8.1% |
| Iron | 5.0% |
| Calcium | 3.6% |
| Sodium | 2.8% |
| Potassium | 2.6% |
| Magnesium | 2.1% |
| All Others | 1.5% |
| Gas | Amount (%) | Amount (PPM) |
|---|---|---|
| Nitrogen | 78% | 780000 |
| Oxygen | 21% | 210000 |
| Water Vapor (0.001-5%) | 5% | 50000 |
| Argon | 0.9% | 9000 |
| Carbon Dioxide | 0.04% | 400 |
| Neon | 0.002% | 20 |
| Helium | 0.0005% | 5 |
| Methane | 0.0002% | 2 |