PROPERTIES OF STARS

There are many different types of stars in the Universe… our star… The SUN; is a very average star

What Do we Know about Stars?

Star Temperature and Color Star Mass from Binary Stars

Star Brightness

Temperatures

A stars temperature is determined by its color

Cool_____Medium_____

Hot _____

Many stars orbit each other= BINARY STARS

We can find the mass of these stars by the size their orbits, also the small star blocks light from the big star, that tells

us their size as well.

Binary Stars

Apparent Magnitude

Absolute Magnitude

What the star looks like from Earth… based on distance from earth

The actual brightness of the star from 32.6 light years away….

Star Distance

Blue=hottestRed=coolestYellow= medium

GEOSCIENCE WARMUPS4-26-12

Agenda: 1.WarmUp

2.COTD3.Start on Star Poster

4.Star Movie

Goal: I will be able to list the different

colors of stars and their temps

What is the temperature of the suna.Hotb.Coolc.Medium

GEOSCIENCE WARMUPS4-26-12

Agenda: 1.WarmUp

2.COTD3.Complete 2 box on

star poster4.Star Movie

Goal: I will be able to describe how we tell the distance of a star

from earth and its mass

Scientists use __________ to find the mass of starsa.Binary starsb.Parallaxc.color

GEOSCIENCE WARMUPS 5-2-12

Agenda: 1.WarmUp

2.COTD3.Complete 1 box on

star poster4.Star Movie

Goal: I will be able to describe how we tell the distance of a star

from earth and its mass

Scientists use __________ to the distance of a star from Eartha.Binary starsb.Parallaxc.color

GEOSCIENCE WARMUPS5-2-12

Agenda: 1.WarmUp

2.COTD3.Complete 1 box on

star poster4.Star Movie

Goal: I will be able to describe how we tell the distance of a star

from earth and its mass

This is the real brightness of a star from 32.6 light years away…. not from eartha.Real magnitudeb.Apparent magnitudec.Absolute magnitude

GEOSCIENCE WARMUPS5-3-12

Agenda: 1.WarmUp

2.COTD3.HR Diagram Poster

4.Star Movie5.Quia Review

Goal: I will be able to describe how we tell the distance of a star

from earth and its mass

HR DIAGRAM POSTER 1. Turn to page 704 2. Draw the diagram in figure 5, with color 3. Label the x and y axis 4. Draw and fill in the following table

Star Type Absolute magnitude(Brightness)Bright, Med, dim

Temperature in degrees, then cool, medium, hot

Color of star

Super GiantWhite GiantMain SequenceWhite DwarfBlue Giant

HR DIAGRAM POSTER 1. Turn to page 704 2. Draw the diagram in figure 5, with color 3. Label the x and y axis 4. Draw and fill in the following table

Star Type Absolute magnitude(Brightness)Bright, Med, dim

Temperature in degrees, then cool, medium, hot

Color of star

Red super giant bright Cool, 3000 redGiant Med bright Cool, 3000 red

Main Sequence(Sun)

med Med, 7000 yellow

White Dwarf dim 7000 whiteBlue Giant Bright 40000 blue

HR DIAGRAM POSTER 1. Turn to page 704 2. Draw the diagram in figure 5, with color 3. Label the x and y axis 4. Draw and fill in the following table

Star Type Absolute magnitude(Brightness)Bright, Med, dim

Temperature in degrees, then cool, medium, hot

Color of star

Super GiantWhite GiantMain SequenceWhite DwarfBlue Giant

HR DIAGRAM POSTER 1. Turn to page 704 2. Draw the diagram in figure 5, with color 3. Label the x and y axis 4. Draw and fill in the following table

Star Type Absolute magnitude(Brightness)Bright, Med, dim

Temperature in degrees, then cool, medium, hot

Color of star

Super GiantWhite GiantMain SequenceWhite DwarfBlue Giant