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Aces Training. Keep your Aces Answer Sheet! Worth a large Test. (100 pts). Pick-up Aces “Warm-up” on back table. Turn-in answer sheet before we go over it. Turn-in questions. Pick-up both at beginning of period on back table. Strategy Review. P.O.E. Focus Words 2-pass method

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Aces Training
• Keep your Aces Answer Sheet!
• Worth a large Test. (100 pts)
• Pick-up Aces “Warm-up” on back table.
• Turn-in answer sheet before we go over it.
• Turn-in questions.
• Pick-up both at beginning of period on back table.
Strategy Review.
• P.O.E.
• Focus Words
• 2-pass method
• Know your enemy

Which ORDER should you use them?

• Know your enemy
• 2-pass method
• Focus Words
• P.O.E.
#20

#22

#23

#21

“The Solar System in a Nutshell”

Chapter 25

However did it get into this nutshell?!

Do Stars Move?

Does the Universe have an end? Will you eventually run into a wall?...

How many constellations there are?

Color:

b/c of Tempo

Hot = B____

Cooler = R___

Yellow?

Mass:

How much “stuff”

“M_____R”

Properties of Stars

LUE

ATTE

ED

Binary Stars:

What are they?!

• Stars that orbit each other
• Gravity!
• Helps find Mass!
Really not that cool.

Artist Rendition of Binary System LH54-425, located in the Large Magellanic Cloud

Nasa.gov

Distance to Stars

Parallax:

• Noticing shift in location throughout the year.

Light-years!

Brightness.
• Size
• Tempo
• Distance from Earth
Hertzsprung-Russell Diagram
• Variable Stars
• Some change brightness

Nova

• Gets Brighter!
Gosh that sounds familiar…

A Cloud of Dust & Gas in Space is a ________!

NEBULA

• Assignment!
• GR. 25.1 For Stamp!
Stellar Evolution
• Birth (contraction)
• Protostar (Tempo ↑)
• Main-Sequence
• (Hydrogen Fusion)
• (90% lifetime)
• Red-Giant (Grows, Tempo ↑↓)
• Death. (Burn-out)
• Runs out of gas.
• Literally.
Releases

Helium:

Smallest Element

Helium

sticks

together

Uses Hydrogen

Forms

other

elements

Nucleosynthesis.

As stars die, they releaseingredientsfornew elements.

Dying star

least

All Very

DENSE!

most

Eventually…

…All stars collapse!

• White Dwarf
• Neutron Star
• Black Hole
The Universe.

Your Desk:

Earth.

• Contains all galaxies.
• Everything.

Lawndale HS:

Universe

Room 605:

Solar System

600 building:

Milky Way

Galaxy

Milky Way Galaxy.
• Spiral Galaxy
• Our Solar system = 2/3 way out!
Expanding Universe.
• Getting B______.
• Hubble’s Law:
• Galaxies that arefarther awayare moving away faster!

IGGER