1. What is the main idea of the reading selection?
a. The pieces of rocks from outer space are meteor,
meteorite, and meteoroid.
b. The light coming from the burning meteoroid is called a
meteor
c. Meteoroid is a piece of matter in outer space.
d. People are searching for ways to keep meteoroids from
making holes in spacecrafts.
2. Which sentence supports the idea that the meteoroid
is a piece of matter that moves in space?
a. It can be large or small. b. It travels for 40 miles a second
c. It can be found in outer space. d. It is smaller than a
grain of sand.​