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- 1. Multiple Choice
How do we describe a star?
A star is a massive ball of plasma that emit light in all direction
Stars are massive ball of fire
Stars are celestial bodies made up of oxygen
Stars have pointy edges similar to Christmas star.
- 2. Multiple Choice
What are the characteristics used to describe a star?
Brightness
Shape
Color and Surface temperature
Size
- 3. Multiple Choice
What do we mean by a star’s luminosity?
It pertains to brightest star
True brightness or the absolute brightness of a star
Brightness from a distant
Brightness based on location of the obsever
- 4. Multiple Choice
How does luminosity affect the brightness of a star?
It makes Blue stars appear dimmer
It makes all stars to have equal brightness
The higher the luminosity of the star, the brighter.
It makes Red stars hotter
- 5. Multiple Choice
What do we mean by star's apparent magnitude.
Apparent brightness is the perceived brightness of a star as observed from the Earth.
It is the Brightness only from the surface
It pertains to the location of the star
Apparent magnitude show the stars true brightness
- 6. Multiple Choice
How does apparent magnitude affect the brightness of a star?
It shows the average brightness of a star
More distant means dimmer.
Much closer means brighter
Apparent magnitude show the stars true brightness
- 7. Multiple Choice
Can you name the closest star on Earth? What is its color?
The Sun and it is a yellow star
Proxima Centauri and it is a red star
It is the Rigel which is a blue star
Its the Polaris of the North
- 8. Multiple Choice
What color of a star is the hottest? Give example
Blue/Alnilam
Red/Betelguese
Yellow/Sun
White/White dwarf
- 9. Multiple Choice
What color of a star is the coldest? Give example
Blue/Alnilam
Red/Betelguese
Blue/Rigel
White/White dwarf
- 10. Multiple Choice
How does color and surface temperature are related to a star’s brightness?
Stars that have blue color are hotter, thus, they are brighter
The color depends on the surface temperature
The color and surface temperature are not related to each other
Stars that have red color are colder, thus, they are dimmer
- 11. Multiple Choice
How does the size of a star affect its brightness?
The more massive a star is, the brighter
The smaller the star, the hotter
Bigger star means longer life span
The size indicates the surface temperature of a star
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