Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.
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Transcript of Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.
![Page 1: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/1.jpg)
Physics 205Introduction to Astronomy 1
Introductions & Scale of the Universe
![Page 2: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/2.jpg)
![Page 3: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/3.jpg)
Solar System: Sun, planets, and other objects orbiting the Sun
![Page 4: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/4.jpg)
Which is larger, a solar system or a galaxy?
A) A solar system
B) A galaxy
C) They are just different terms for the same thing
![Page 5: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/5.jpg)
Looking back in time
The further away we look …
… the further back in time we see.
![Page 6: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/6.jpg)
The light from which object is older?
A) Pluto
B) The Sun
C) The Andromeda galaxy
D) The Moon
![Page 7: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/7.jpg)
Orion Nebula
~1500 ly away
![Page 8: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/8.jpg)
Andromeda Galaxy
~2.5 million ly away
![Page 9: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/9.jpg)
(Astronomical Unit)13.8 billion ly
The “Observable Universe”
We’re in the middle
![Page 10: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/10.jpg)
In which statement are the words used incorrectly?
A) Light from the Andromeda galaxy is about 2.5 million lightyears old.
B) When we see a supernova explosion that is 150 million lightyears away, the explosion actually happened 150 million years ago. C) Since it takes light 8 minutes to travel from the Sun to the Earth, we could say that the Earth is 8 lightminutes away from the Sun.
![Page 11: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/11.jpg)
Astro-Cash Cab!
Jasmyn Brendle
Joe Gonzales
Isabel Schneider
Quincy Davison
Faleen Labato
Rules…
![Page 12: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/12.jpg)
1) True or False?
It would take light 50,000 years to go from the center of our galaxy to its outer edge.
![Page 13: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/13.jpg)
2) Put the following in order according to size, smallest to largest:
The Milky Way
The Sun
Earth
The Local Cluster
![Page 14: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/14.jpg)
3) Which type of planet is the Earth?
Terrestrial
Jovian
Dwarf
![Page 15: Physics 205 Introduction to Astronomy 1 Introductions & Scale of the Universe.](https://reader036.fdocuments.in/reader036/viewer/2022081513/56649e4d5503460f94b42fb3/html5/thumbnails/15.jpg)
4) The distance light travels in one year is called a(n) …