Unit 3: Astronomy Part 2

A star is....
(LT 1)

• made of hydrogen and helium and goes through nuclear fusion
• made of nitrogen and helium and goes through nuclear fusion
• made of hydrogen and helium and does not go through nuclear fusion
• made of nitrogen and helium and does not go through nuclear fusion

This is determined by the surface temperature of a star
(LT 2)

• color
• size
• shape
• life cycle

A star that is average temperature and middle aged would be what color?
(LT 3)

• Blue
• White
• Yellow
• Red

Stars appear to move in the night sky because...
(LT 4)

• of the earth's motions
• they are moving towards earth fast
• the speed of light
• our orbit is changing dramatically

The brightness that we see from earth
(LT 5)

• apparent magnitude
• absolute magnitude
• luminosity
• parallax

Actual brightness of a star that is found by using the distance and apparent magnitude
(LT 5)

• Luminosity
• apparent magnitude
• parallax
• temperature

Which area of the H-R diagram would we find white dwarfs?
(LT6)

• G
• F
• E
• B

Where could we find old and cool stars on the H-R diagram?
(LT 6)

• A
• G
• B
• F

Majority of star are in the _________ on the H-R diagram
(LT 6)

• Main sequence
• Red Giants section
• Blue Giants section
• White dwarfs section

What type of galaxy is seen in this picture?
(LT 7)

• Spiral
• Eliptical
• Irregular