Let's see if you got something in that little brain of yours. :)

2. Measuring the stars, Giants, Dwarfs
and the Main Sequence

4. 1.) ________ is born when an
enormous cloud of hydrogen gas
collapses until it is hot enough to burn
nuclear fuel.
STAR

5. 2.) The group of stars are called
________.
CLUSTERS

6. 3.) It is the rate at which a star radiates
energy into space.
Luminosity

7. 4.) It is a graph that plots stars color
and its luminosity.
Hertzsprung -
Russell Diagram

8. 5.) How many types are there to
classify a star?
7

9. 6.) ________ is an example of a yellow
dwarf.
SUN

10. 7.) The composition of stars is studied
using _____________ in which their
visible light is studied.
SPECTROSCOP
Y

11. 8.) These are the classification of stars;
O, B, A, T, F, G, K, which letter does
not belong to the group?
T

12. 9.) Sirius and Vega are examples of a
type A star. TRUE or FALSE
TRUE

13. 10.) ___________ is the rate at which a
star's radiated energy reaches an
observer on Earth.
APPARENT
BRIGHTNESS

14. 11.) _____ stars radiate most of their
energy in the red and infrared region of
the electromagnetic spectrum and thus
appear red.
COOL

15. 12.) Hot stars emit mostly _______
and ultra-violet rays.
BLUE

16. 13.) It is the largest known type of star,
some are almost as large as our
entire solar system.
SUPERGIANT
STARS

17. 14.) A rapidly spinning neutron star
that emits energy in pulses.
PULSAR

18. 15.) The largest stars have the shortest
life span. TRUE or FALSE
TRUE