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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
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
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.
slide3
#20

#22

#23

#21

the solar system in a nutshell
“The Solar System in a Nutshell”

Chapter 25

However did it get into this nutshell?!

slide5
Do Stars Move?

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

How many constellations there are?

properties of stars
Color:

b/c of Tempo

Hot = B____

Cooler = R___

Yellow?

Mass:

How much “stuff”

“M_____R”

Properties of Stars

LUE

ATTE

ED

binary stars
Binary Stars:

What are they?!

  • Stars that orbit each other
  • Gravity!
  • Helps find Mass!
slide8
Really not that cool.

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

Nasa.gov

distance to stars
Distance to Stars

Parallax:

  • Noticing shift in location throughout the year.

Light-years!

brightness
Brightness.
  • Size
  • Tempo
  • Distance from Earth
slide11
Hertzsprung-Russell Diagram
  • Variable Stars
    • Some change brightness

Nova

    • Gets Brighter!
gosh that sounds familiar
Gosh that sounds familiar…

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

NEBULA

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

Helium:

Smallest Element

Helium

sticks

together

Uses Hydrogen

Forms

other

elements

Nucleosynthesis.

As stars die, they releaseingredientsfornew elements.

Dying star

eventually
least

All Very

DENSE!

most

Eventually…

…All stars collapse!

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

Your Desk:

Earth.

  • Contains all galaxies.
  • Everything.

Lawndale HS:

Universe

Room 605:

Solar System

600 building:

Milky Way

Galaxy

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

IGGER

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