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Astronomy Review, Unit 2 Flashcards | StudBud
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Astronomy Review, Unit 2
Astronomy Review, Unit 2
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#Astronomy #Review, Marron 2017. Includes #questions from #notes, and #movies.
Flashcards
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Questions
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Answers
1
Using Earth's orbit is good for
the weather
use same ends of earth's orbit against background stars
measuring stars 100 Ly away
measuring stars 100 Ly for ground telescopes
2
True or False, Time does not flow at a fixed rate
True
False
3
What did The Church believe was at the center of the solar system?
Mars
Sun
Earth
Us
4
Why is the Big Bang Theory the most accepted theory for how the universe started?
most simple explaination
Religion says so
small group of scientists says it was the best option
science has proven it beyond doubt
5
True or False, A digital spectra shows intensity vs wavlength
False
True
6
Speed of Light
300,000 km/s
9.5 trillion km/year
300,000 km/year
200,000 km/s
7
Cepheid Variables
dim stars that can be measured & observed
luminous pulsating stars
8
Whats one disadvantage of a Reflecting telescope?
No chromatic aberration
Light reflects off of aluminum alloy
Cheap
Chromalic Aberration
9
The moon is similar to what?
Pluto
Venus
Mars
Earth
10
In red shift, the wavelengths of light become
slower
faster
longer
shorter
11
True or False, it takes 11 or less years to formulate General Relativity that includes gravity
False
True
12
Energy in light
E=hf
3x108 m/s
6.626x10-34
E=wf
13
True or False, Einstein's relativistic universe is absolute
True
False
14
Absolute Magnitude
the actual magnitude
what the magnitude seems like
apparent brightness
15
True or False, Extremely violent collisions are frequent
True
False
16
Which is NOT a Use of Spectrum
Motion
Temperature
Texture
Composition of Stars
17
True or False, light speed is 184,000 miles per second
True
False
18
True or False, Doppler shift is motion along the line of sight
False
True
19
True or False, Continuous Spectrum is a solid or liquid excited to emit light
False
True
20
How many major moons does Jupiter have?
4
2
3
5
21
Which one is NOT an Advantage to a Radio Telescope?
See where clouds of cool hydrogen are located between stars
Large Diffraction Fringes
Detect luminous objects
Penetrate vast clouds
22
Which of the following is NOT evidence of The Big Bang Theory?
Stars that are blue shifted
CMBR is everywhere
Abundance of hydrogen and helium
Universe is getting bigger
23
True or False, Gentle Collisions are rare
False
True
24
Number of waves past of point per second
Energy
Frequency
Wavelengths
Microwaves
25
What did Penzias & Wilson find?
a galaxy
high powered radio waves
microwave glow
the big band
26
What does Heliocentric mean?
Earth is not the center of the universe
Everything revolves around the Earth
Earth is at the center of the solar system
Earth revolves around the Sun
27
space and time tell matter to do what?
Stay still
Move
Fall
28
what does the Big Bang Theory explain?
origins of the universe
law of gravity
the beginning of life
29
True or False, Inversely proportional to square of distance between objects
False
True
30
What is the order of the Electromagnetic Spectum based on?
Radio, Infared, Visable light, Ultra Violet, X Ray, Gamma
Hydrogen levels
Microwaves
Wavelengths & Frequencies
31
Dark energy makes up what percent in the universe?
30%
70%
20%
50%
32
Name one problem of a Reflecting Telescope
Operating space
Can see to the edges of the Milky Way
Diffraction Fringe
33
True or False, in Black Body Radiation, all objects have heat unless at 0 Kelvin
False
True
34
Which is True?
To a moving obs. speed of light should be consistant
disances stretch or shrink
light always travels at the same speed
To an obs. at rest, light travels at an unconstant rate
35
who observed galaxies moving away from us?
Arno Penzias
Edwin Hubble
Georges Lemaitre
Robert Wilson
36
What is the "holy grail" of physics
unified field theory
Hydrogen
Oxygen
Atoms
37
T/F, speed of light is the same for an observer, regardless of their motion relative to light
True
False
38
What had Galileo wanted to be before he became an Italian Polymath?
Dad
Catholic Priest
Scientist
Italian Chef
39
what is a scientific theory?
well tested over a long period time
an observation of what happens
a best guess hypothesis
an opinion
40
True or False, The larger the mass, the larger the gravitational pull?
False
True
41
Whats one disadvantage of a Refracting telescope?
Red comes into focus, Blue out of focus
Cheap
Chromalic Observation
Concave Mirror
42
What is based on geometric relationships since 1500s?
Distance to Galaxies
Distance to Stars
Distance to Planets
43
A galaxy moving towards the Earth will show
a decrease in brightness
a blue shift in the spectrum
an increase in light years
a red shift in the spectrum
44
Name of Eintien's theory of gravity
Theory of Relativity
General Relativity
Special Relativity
45
What was Ellie's PHD in?
Robotics
Astro Physics
Mazer
Radio Science
46
Most abundant atom
hydrogen
nitrate
oxygen
hellium
47
How many parts are there to a Radio Telescope
4
6
2
3
48
Optical Telescopes
Reflecting & Refracting
Rotation
Refracting
Translation
49
Worst way to measure distance
parallax
cepheid variable
hertzsprung-russell diagram
50
how old is the solar system?
2.7 million years
4.4 billion years
4.6 billion years
2.7 billion years
51
Who figured out that light was a wave?
James Clark Maxwell
Galileo
James Clark Huton
Newton
52
which one is NOT a problem with Newton's clockworks universe?
Aether
Mercury's Orbit
Speed of Light
Einstein's Theory
53
what force allowed the universe to develop?
oxygen
hydrogen
Gravity
54
True or False, the sun destroys matter to get energy
False
True
55
Which is NOT true about Aether?
Newton keeps Aether
If put into motion, very complicated math
The ancient greeks Aristotle need Aether
Einstein kills Aether
