Outer Space
Name: ______________________ Date: ____________
Write the letter of the matching definition next to each term.
1. solar
A. Everything that exists anywhere
2. space
B. The largest planet and the 5th from the sun
3. jupiter
C. The branch of physics that studies celestial bodies and the universe as a whole
4. saturn
D. A large asteroid that was once thought to be the farthest known planet from the sun
5. mars
E. A giant planet that is surrounded by three planar concentric rings of ice particles
6. venus
F. Natural satellite that orbits the Earth
7. earth
G. The planet we live on
8. uranus
H. Relating to or derived from the sun or utilizing the energies of the sun
9. pluto
I. The month following February and preceding April (plural)
10. mercury
J. A relatively small extraterrestrial body consisting of a frozen mass that travels around the sun
11. sun
K. The star our planet orbits
12. comet
L. The vast area beyond Earth's atmosphere
13. galaxy
M. A magnifier of images of distant objects
14. moon
N. Study of the natural world through experiments
15. science
O. The second nearest planet to the sun
16. astronomy
P. A collection of star systems
17. universe
Q. Ball of burning gas shining in the night sky
18. star
R. A giant planet with a ring of ice particles
19. telescope
S. The smallest planet and the nearest to the sun