STARSSTARS

Adapted for TCSS

S4E1 Students will compare S4E1 Students will compare and contrast the physical and contrast the physical attributes of stars, star attributes of stars, star patterns, and planets.patterns, and planets.

a. Recognize the physical attributes a. Recognize the physical attributes of stars in the night sky such as of stars in the night sky such as

number, size, color, and patterns.number, size, color, and patterns.

How do stars compare How do stars compare in terms of size, color, in terms of size, color,

brightness, and brightness, and patterns?patterns?

EQ:EQ:

What is a star?What is a star?

A star is a huge ball of very A star is a huge ball of very hot gases like hydrogen hot gases like hydrogen

and helium.and helium.

Our sun is the closest star to Our sun is the closest star to our planet.our planet.

It is the only star in our solar It is the only star in our solar system.system.

Scientist classify stars in several Scientist classify stars in several ways:ways:

By sizeBy sizeBy colorBy colorBy brightnessBy brightness

Star SizesStar SizesStars come in different sizes.Stars come in different sizes.Some stars are even smaller than Some stars are even smaller than

Earth.Earth.The smallest stars are called The smallest stars are called

neutron stars.neutron stars.

STARSSTARS

Star Size Star Size (biggest (biggest to to smallest)smallest)

1. Super Giants (biggest)1. Super Giants (biggest) 2. Giants2. Giants 3. Medium Sized3. Medium Sized

STARSSTARS

Star Size Star Size (biggest (biggest to to smallest)smallest)

4. White Dwarfs4. White Dwarfs

5. Neutrons (Smallest)5. Neutrons (Smallest)

Star Colors:Star Colors: color tells the color tells the temperaturetemperature

Red (coolest)Red (coolest)Red - orangeRed - orangeYellowYellowWhiteWhiteBlue (hottest)Blue (hottest)

STARSSTARS

Star Star Temperature Temperature (coolest to (coolest to hottest)hottest)

Related to colorRelated to color

RedRed

Red-OrangeRed-Orange

YellowYellow

WhiteWhite

BlueBlue

CoolestCoolest

HottestHottest

Star BrightnessStar Brightness

Brightness depends on two things:Brightness depends on two things:How far it is from Earth.How far it is from Earth.How bright it actually is.How bright it actually is.

STARSSTARS

Star Star BrightnessBrightness

Depends actual brightness of Depends actual brightness of the star and distance from the star and distance from earthearth

STARSSTARS Star Star

PatternsPatterns(A pattern or group of stars in the sky is

called a constellation.)

Big Dipper

STARSSTARS Star Star

PatternsPatternsOrion is one of the brightest

constellations and is a mythological character.

What is our Sun?What is our Sun?

Medium sizeMedium sizeMedium heatMedium heatA yellow starA yellow starMedium brightnessMedium brightness