The air we live in is simply the lowest later of the atmosphere, and air is required for your voice to work, so yes, your words must reach the atmosphere to be considered speech at all.
it becomes water vapour in the atmosphere.
70
About 50% of the sun's radiation that reaches Earth's atmosphere is absorbed by the Earth's surface. The remaining energy is either reflected back to space or absorbed by the atmosphere.
25%
Oceans
Dew point
A meteoroid in the atmosphere is a "meteor", and one that reaches the ground is a "meteorite".
The layer of the sun's atmosphere that reaches farthest into space is called the Corona.
Oxygen in the Earth's atmosphere reaches up to about 100 kilometers above the surface.
Yes, until it reaches Earth's atmosphere. Fortunately for us, virtually all of the X-ray energy is absorbed by the atmosphere, and none remains by the time the rest of the light reaches the ground.
It is absorbed by the atmosphere
Yes, in the upper atmosphere the wind reaches 350km/hr