Lesson 6 Flashcards
(8 cards)
1
Q
Asteroid
A
A small rocky body orbiting the sun.
2
Q
Astronomer
A
An expert in or student of astronomy.
3
Q
Black Hole
A
A region of space having a gravitational field so intense that no matter or radiation can escape.
4
Q
Experimental
A
A procedure carried out under controlled conditions in order to discover an unknown effect.
5
Q
Galaxy
A
A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
6
Q
Mechanics
A
A person who repairs and maintains machinery.
7
Q
Meteor
A
A small body of matter from outer space that enters the earth’s atmosphere.
8
Q
Meteorite
A
A meteor that survives its passage through the earth’s atmosphere such that part of it strikes the ground.
