Evaporation
When a meteor enters the earth's atmosphere, friction with the air generates enormous amounts of heat, which causes the meteor to at least partially burn up.
Earth's orbit crossing the orbit of a defunct comet.
A visible meteor is a meteor that can be seen by the naked-eye
No, the light produced from a meteor is not due to nuclear fusion. When a meteoroid enters Earth's atmosphere, the friction with air molecules causes it to heat up and glow, resulting in the light we see. This phenomenon is known as "incandescence."
CFC's are the chemicals. They readily vaporize and deplete the ozone.
The friction with atmosphere causes heat and the meteor eventually burns out.
A "meteor shower". (The individual space rocks pulverize or vaporize when they hit Earth's atmosphere.)
When a meteor enters the earth's atmosphere, friction with the air generates enormous amounts of heat, which causes the meteor to at least partially burn up.
Meteor impact, volcanism, bombs.
The Earth is hit by tens of thousands of meteors each day. Most do no damage at all, but do add several tons of dust to the air as they vaporize.
A "meteor" is when you see a "shooting star"; at that moment, the object is entering the Earth's atmosphere, and since it enters with a very high speed, its temperature, at least on the surface, gets hot enough to vaporize any material. Probably a few thousand degrees.
Meteors shine like a star because of the friction with Earth's atmosphere as they travel at high speeds. This causes the meteor to heat up and glow.
The streak of light created by a meteoroid entering the Earth's atmosphere is called a meteor. A meteorite is the remains of a meteoroid that did not vaporize after entering the Earth's atmosphere.
Comets are mainly composed of ice, dust, and gas, and they often orbit the sun in elongated, elliptical paths. When a comet gets closer to the sun, the heat causes the ice to vaporize, releasing gas and dust particles that form a glowing coma and a tail.
The friction between dust on a meteoroid and the Earth's atmosphere causes the light to shine, which is a meteor. When lots of meteroids hit Earth at similar times, a significant amount of meteors show in Earth, causing a meteor shower.
Gravity and the unfortunate state of being in its path as it travels around the sun
Gravity. And the meteor is on a path that intersects the orbit of the Earth.