Download Activity Sheet: Galaxies and Stars

Galaxies and Stars
e
What are the 3 types of galaxies?
on
1.
2.
3.
Matching: Write the letter of the most appropriate term in the blank before each description.
_____ 1.
the brightness of a star as seen from Earth
A. white dwarf star
_____ 2.
a huge ball of glowing gas
B. solar system
_____ 3.
C. light year
_____ 4.
the brightness of a star as if it were a set distance
From Earth
a giant structure containing billions of stars
_____ 5.
all of space and everything in it
E. Hubble
_____ 6.
the brightness of a star
F.
_____ 7.
the distance that light travels in one year
G. neutron star
_____ 8.
H. magnitude
_____ 9.
a group of planets and other celestial objects that
revolve around a star
the smallest kind of star
I.
absolute brightness
_____ 10.
the telescope use to look into deep space
J.
comet
D. star
apparent brightness
K. universe
L. galaxy
True/False--Circle the letter to indicate if the statement is true or false.
T
F 1. The main gases in stars are hydrogen and helium.
T
F 2. Stars can be classified according to their size, temperature, and brightness.
T
F 3. The Milky Way is an example of an elliptical galaxy.
T
F 4. Our sun is an example of a giant star.
T
F 5. A star’s brightness depends on its size and temperature.
T
F 6. When we see the stars in the sky, we are actually looking at the past.
T
F 7. There are approximately 100 galaxies in the universe.
T
F 8. A star’s color is related to its temperature.
T
F 9. A light year tells how long it takes light to travel across the universe.