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Astronomy Day 5. Goals Explain the connection between temperature and color. Draw three basic types of galaxies. Identify the galaxy that we live in. Bell Ringer. Why is snow white? It’s made of water and water is colorless, so how come it turns white just by freezing?.

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Astronomy day 5

Astronomy Day 5

Goals

Explain the connection between temperature and color.

Draw three basic types of galaxies.

Identify the galaxy that we live in.


Bell ringer
Bell Ringer

Why is snow white?

It’s made of water and water is colorless, so how come it turns white just by freezing?


Paul hewitt video clip

Paul Hewitt Video Clip

Be prepared to discuss the video clip.


Drawing blackbody curves

Work with your shoulder partner to draw black body curves for the following stars

Yellow

Blue-white

White

Blue

Orange

red

Label the x-axis as wavelength and the y-axis as Luminosity in Suns.

The lines you draw should correspond with the color of the star.

Make a key that shows the names of the stars.

Record the temperature (K) at the peak of your line.

Drawing Blackbody Curves


Temperature and em radiation
Temperature and EM radiation for the following stars

  • Hotter objects emit different EM radiation than cooler objects

  • Hotter objects will emit shorter wavelength EM and cooler objects

  • Think about what you know about wavelength of EM and its energy—why does this make sense?


Black body curves
Black Body Curves for the following stars


The temperature of a star is evidenced by its
The temperature of a star is evidenced by its for the following stars

  • Color

  • Brightness

  • Angular momentum

  • Rate of burning

  • Distance


The brightest color emitted by the sun is
The brightest color emitted by the sun is for the following stars

  • Blue-green

  • Orange

  • Red

  • Yellow-green

  • Violet


Applications of the connection between temperature and em radiation
Applications of the connection between temperature and EM radiation

  • Infrared ear thermometers

  • Infrared thermometers


Galaxies
Galaxies radiation

There are 3 basic types of galaxies

Spiral

Elliptical

Irregular

These three types were identified by Edwin Hubble


Milky way
Milky Way radiation


The milky way is
The Milky Way is radiation

  • An irregular galaxy

  • An elliptical galaxy

  • A spiral galaxy


Ticket out
Ticket Out radiation

  • Explain the connection between temperature and color.

  • Draw 3 basic types of galaxies. Circle the type we live in (the Milky Way Galaxy)


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