Color of a star
List the colors that we can use to determine other factors of a star.
Blue, White, Orange, and Red
How can we determine a star's temperature by?
Color and its luminosty.
A star with a magnitude of +10 is brighter than a star with a magnitude of - 3.
True or False
False- It would be dimmer because stars with higher magnitudes are dimmer.
Explain how astronomers find the size of a star.
Astronomers find a star's size based on its own mass.
What can you tell about a star if its color was blue?
That it is super hot.
What would be the temperature of a star if the color was orange?
The temperature of that star would be cool.
How long does it take light to travel from the sun to to Earth?
8 1/3 minutes
Define a star.
- "a fixed luminous point in the night sky which is a large, remote incandescent body like the "sun"
- Natural Satellite
- Emits Light
The temperature of a star is hot, so what would the color be?
Blue/White
What is the relationship we can see between a star's temperature and its color?
If the color is blue or white it has a warmer temp. If the color is orange or red it has a colder temp.
How do we measure the distance of light?
Lightyears
What controls a star's size?
Mass and Age.
If the temperature of a star is cool, what color would it be?
Orange/Red
What is the temperature of 'middle sized' stars?
Warmer temperatures.
Explain how astronomers find the brightness of a star.
Astronomers find the brightness of a star by measuring its magnitude.
Why do stars expand?
The core of the star is really hot which pushed the outer layers outward.
Just by using the color of a star what can we infer about a star's luminosity?
Colder temp.= higher luminosity
Higher temp.= lower luminosity
If a star's luminosity was low, what would its temperature be?
Hotter Temperature.
What things affect the magnitude of a star?
How far away it is from Earth (distance)
Does the size of a star determine its lifespan?
The larger the star's mass is, the shorter its lifespan.