Is air denser near Earth's surface than high in the atmosphere?
Yes, due to the mass of the atmosphere above the surface the air is denser at the surface than high in the atmosphere.
Yes air is denser near the earth's surface than high in the atmosphere. The farther up air rises, there are less molecules of air between the outer edges of the atmosphere. This means there is a lot less air weighing down. A general rule of thumb is the higher the altitude, the lower the pressure: the lower the altitude, the higher the pressure.
Meteorites. When floating in space they are called meteoroids, they are then called meteors when they enter the earths atmosphere at high speeds, burning up brightly as shooting stars for a brief period due to the friction against the gas in the atmosphere. If any surviving pieces are found on the surface, they are called meteorites.