stars and seasons Flashcards
(17 cards)
What does Binary star mean ?
When two relatively close stars revolve around one another
What does Constellation mean ?
Stars grouped together according to the pattern they make in the sky
A star with a low temperature that is many times larger than our sun is ?
Red Giant
When the moon passes between the sun and earth totally blocking the sunlight is ?
Solar Eclipse
What does Supernova mean ?
The explosion of a star ,which generates enormous amounts of light .
What does emit mean?
Emit is when an object makes it own light
What does reflect mean ?
Reflect means when an object gets it light from
What does apparent motion means ?
It happens when the Earth is rotating from West to East , the sun appears to move across the sky from East to West .
What is the closest star to our Earth ?
Proxima Centauri
What are the 3 types of variable stars ?
- Pulsating Variables
- Exploding Stars
- Eclipsing Binaries
Name 3 example s of things in space that make their own light?
▪Sun
▪stars
▪constellation
Name 3 examples of things in space that reflect light
▪moon
▪planets
▪nebula
Name the 5 catagories of stars
- Supergiants
- Gaints
- Medium-sized
- White dwarf
- Neautron stars
How do astronomers know the brightness of a star to measure stars?
They use a photometer to measure
the brightness of a star and compare the brightness of star by using a number called the stars magnitude
The brighter the star is ……….. it’s magnitude
The lower the magnitude
How do astrometers use luminosity?
Astronomers use the the term luminosity to describe the amount of energy a star emits or gives.
How do astrometers use the color of stars measure a star?
The use the color of the star to take the teperature of the star.
