Show:
Stars #1
Stars #2
Stars #3
Stars #4
Stars #5
100
What are the two main elements found in stars?
Hydrogen and Helium
100
Our sun is a _________ star. a) giant b) white dwarf c) main sequence d) neutron
c) main sequence
100
Which of these options is a star? a) Moon b) Earth c) Sun d) Jupiter
c) Sun
100

It is a hot ball of glowing gases a) star b) galaxy c) planets d) universe

a) star

100

A group of stars that form a pattern is called a(n) __________ .

constellation

200
What determines whether a star becomes a red giant or a red SUPERgiant? a) Its brightness b) Its mass c) Its color
b) Its mass
200
A star is actually born when __________. a) nuclear fusion ends b) nuclear fission ends c) nuclear fusion begins d) nuclear fission begins
c) nuclear fusion begins
200
What is the best unit of measurement to describe the distance of stars from Earth? a) meter b) kilometer c) light-year d) year
c) light-year
200
What is a nebula? a) A group of five or more stars in a galaxy b) A cloud of gas and dust in which stars form c) A place stars go to die d) A cloud of small rocks in which stars form
b) A cloud of gas and dust in which stars form
200
The gravitational pull of a black hole is so strong that not even light can escape it. True or false?
True
300
Why did ancient civilizations use the stars? a) Planting crops b) Navigation c) Calendar d) All of the above
d) All of the above
300
Sailors use what star to navigate on long voyages? It is the brightest star in the night sky and it does not move its position in the sky throughout the course of the night. a) The Big Dipper b) The North Star
b) The North Star
300

Factors that control the apparent brightness of a star as seen from Earth: a) how big it is b) how hot it is c) how far away it is d) all of the above

d) all of the above

300
Constellations are: a) star arrangements b) Christmas lights c) planet arrangements d) asteroids
a) star arrangements
300
What do you call a neutron star that is shooting energy into space? a) A supernova b) A pulsar
b) A pulsar
400
What is the temperature of a star with a blue color? a) cool b) hot c) medium for a star d) the same as the Sun
b) hot
400

What is the luminosity of 40 Eridani B?

0.01

400

Which star has a luminosity of 10 and a surface temperature of 10,000 K?

Sirius

400
These are the largest and brightest stars a) Supernovas b) Giants c) Supergiants d) Neutron stars
c) Supergiants
400
After a supernova a high mass star either becomes a __________ or a ___________ .
neutron star/pulsar or black hole
500

Apparent Brightness is: a) measure of the amount of light a star actually gives off b) measure of the amount of a star's light received on Earth c) a light year d) temporary features that come and go

b) measure of the amount of a star's light received on Earth

500
List the color of stars from hottest to coolest: (red, white, blue, yellow, orange)
blue, white, yellow, orange, red
500
How do stars begin? a) They emerge from black holes. b) When other stars shoot off smaller stars. c) When white dwarfs start generating light again. d) When fusion begins in gas clouds in space
d) When fusion begins in gas clouds in space.
500

Which star is closest to a Luminosity of 100?

Pollux

500
The scientific study of stars is called _____________.
astronomy