Meteors are pieces of rock or ice colliding with the Earth's atmosphere at high speed.
(Meteors; are; pieces of rock or ice colliding with the Earth's atmosphere at high speed) (pieces of rock or ice; colliding; with the Earth's atmosphere at high speed)
Meteors pieces of rock or ice
are colliding
pieces of rock or ice colliding with the Earth's atmosphere at high speed
with the Earth's atmosphere at high speed