Th thermosphere is 415km deep. What percent of the atmosphere made up by the thermosphere if the total atmosphere extends 500km.

415/500 = .83 = 83%

To calculate the percentage of the atmosphere made up by the thermosphere, you need to divide the depth of the thermosphere by the total depth of the atmosphere and multiply by 100.

In this case, the depth of the thermosphere is 415 km, and the total depth of the atmosphere is 500 km.

To find the percentage, follow these steps:

Step 1: Divide the depth of the thermosphere by the total depth of the atmosphere:
415 km ÷ 500 km = 0.83

Step 2: Multiply the result by 100 to get the percentage:
0.83 × 100 = 83%

Therefore, the thermosphere makes up approximately 83% of the total atmosphere depth.