Download Solar System and Astronomy puzzle 001

Solar System and Astronomy 001
Across
Name: __________________________________
Class:
_____________ Date:
2.
5.
6.
8.
9.
3rd rock from the sun
the distance that light travels in a vacuum in one Julian year
the four currently accepted dwarf planets beyond Neptune's orbit
nuclear reaction at core of star
a star system consisting of two stars orbiting around their
common center of mass
10. natural satellite
12. a massive, gravitationally bound system consisting of stars,
stellar remnants, an interstellar medium of gas and dust
13. growth of a massive object by gravitationally attracting
more matter
Down
1.
a region of the solar system beyond the planets extending
from the orbit of Neptune (at 30 AU) to approximately
50 AU from the Sun
3.
a natural science that deals with the study of
celestial objects
4.
patterns formed by prominent stars within apparent proximity
to one another
7.
the galaxy that contains the Earth
11. lost its status as a planet in 2006 when it was reclassified
as a dwarf planet
14. interstellar cloud of dust, hydrogen, helium and
other ionized gases
_____________
Solar System and Astronomy 001
Answer-Key
Across
2.
3rd rock from the sun
Answewr: earth
5.
the distance that light travels in a vacuum in one Julian year
Answewr: light-year
6.
the four currently accepted dwarf planets beyond Neptune's orbit
Answewr: Plutoids
8.
nuclear reaction at core of star
Answewr: fusion
9.
a star system consisting of two stars orbiting around their common center of
mass
Answewr: binary-star
10. natural satellite
Answewr: moon
12. a massive, gravitationally bound system consisting of stars, stellar
remnants, an interstellar medium of gas and dust
Answewr: galaxy
13. growth of a massive object by gravitationally attracting more matter
Answewr: accretion
Down
1.
a region of the solar system beyond the planets extending from the orbit of
Neptune (at 30 AU) to approximately 50 AU from the Sun
Answewr: Kuiper-belt
3.
a natural science that deals with the study of celestial objects
Answewr: Astronomy
4.
patterns formed by prominent stars within apparent proximity to one another
Answewr: constellation
7.
the galaxy that contains the Earth
Answewr: Milky-Way
11. lost its status as a planet in 2006 when it was reclassified as a dwarf
planet
Answewr: Pluto
14. interstellar cloud of dust, hydrogen, helium and other ionized gases
Answewr: nebula