Page 2 - Reading Success B9
P. 2
Unit 1
Astronomer
Before You Read
1. What do you know about planets?
2. What is space like?
Vocabulary
Match the words with their definitions.
a. astronomer 1. a gradual increase
b. approximately 2. a straight line passing through the center of
a circle or sphere
c. analogy 3. to come into possession of
d. accretion 4. very closely
e. acquire 5. to establish the truth of
f. diameter 6. comparison
g. confirm 7. one who studies planets, stars, and other
celestial bodies
unit 1_5
