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Test your basic knowledge |
Cosmology
Start Test
Study First
Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
Rich vs poor clusters
Dwarf planets
Horizontal Branch Star
Pixel
2. Jupiter
Ecliptic
zone
fastest rotation
Limb darkening
3. When one side of a body always faces the planet it revolves around
chondrite
synchronous rotation
MOONS: largest size
Supercluster
4. A bright area of higher temperature that often proceeds the formation of sunspots.
Differential Rotation
Autumnal Equinox
Plague
inferior planets
5. Electromagnetic Radiation
Celestial Equator
A family of radiant energy- includes light
interstellar dust
Autumnal Equinox
6. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)
radiation dominated universe
Ole Roemer
protostar
belt
7. A repeated - periodic push or pull capable of summing into a larger push or pull
shape and color of ELLIPTICAL galaxies
resonance
E=mc2
Kirkwood gaps
8. The rotation of a star or planet at different speeds at its equator and poles
opposition
jovian
differential rotation
Ecliptic
9. The point directly overhead.
Zenith
radio galaxy
Hyashi track
Apollo asteroids
10. Centered on the Earth
accretion
Geocentric
Spectroscopic Parallax
HII Region
11. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t
Density Wave
inferior planets
Spectroscopic parallax
Seyfert galaxy
12. Elliptical orbits that come inside orbit of the Earth.
Apollo asteroids
Electromagnetic Radiation: Ultraviolet Light
Planetary Nebula
Cepheid Variable
13. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
opposition
planetary nebula
Particle Horizon
zone
14. A prominence seen against the disk of the sun
difference between maria and highlands of the moon.
scarp
Filament
isotropic
15. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.
SETI
The Local Group
Negative - Diverge - Less than 1
Light: travels like a wave - detected like a particle
16. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.
Turn off Point
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
Ole Roemer
cosmic fireball
17. Then the Sun moves from north to south across the celestial equator (about September 23)
Drake equation
Autumnal Equinox
Milky way Galaxy
Big Bang
18. Small moons that maintain the shape of rings around Saturn and Uranus
acceleration
Clouds of sufuric acid (very inhospitable and brightest object in the sky) - process called greenhouse affect traps radiation making it 900 degrees at times - spins with retrograde rotation (sun rises in west) and takes 58.4 days for it to set. Thick
Doppler Shift
Shepherd satellite
19. Where is the center of the expansion
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
Coldest surface
E=mc2
SETI
20. The sinking of denser elements to the center of a young molten planet
Jovian Planets
chemical differentiation
Annular Eclipse
Brown dwarf
21. The powdered stone fragments that make up the lunar 'soil'
H2 Regions
terrestrial planet
regolith
Dark Matter
22. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.
Emission Spectrum
comet
disk
synchrotron radiation
23. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.
nova
Resolving Power
Corona
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
24. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
epicycle
Focal Length
Particle Horizon
Annular Eclipse
25. The process of acquiring material
Main Sequence
accretion
Meridian
Supernova (You can be my supernova girl)
26. 100 nm 10 nm
Electromagnetic Radiation: Ultraviolet Light
nucleus
Gamma-ray Burst
Eclipses of the Moons of Jupiter
27. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE
Light Gathering Power
supernova
Astronomical Unit
Callisto (Jupiter)
28. Why does the earth have few craters while the moon has many?
Radiative Diffusion
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Electromagnetic Radiation: Visible Light
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
29. The place in the sky that the Earth's axis points toward (can be either north or south)
Colestial Pole
most moons
slowest rotation
Secondary Mirror
30. An object that may remain after a star explodes
fusion crust
Neutron Star
Open Cluster
evidence of water on mars
31. Neptune or uranus
Coldest surface
Vernal Equinox
Lagrangian Razor
standard candle
32. When particles are compressed to an unnatural state where their pressure is not related to their temperature
Black Hole
Color Index
Degeneracy
meteoriod
33. When the Moon entirely blocks the Sun.
Ganymede (Jupiter)
Total Eclipse
slowest rotation
Primary Mirror
34. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the
anorthosite
Horizontal Branch Star
The Big Bang Theory
Grand design spirals
35. A two-filter measure of the color - and hence temperature - of a star.
Color Index
Prominence
H2 Regions
Roundest orbit
36. A younger cluster of stars - found in the galaxy disk
Asymptotic giant Branch Star
nova
Open Cluster
Bulge
37. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.
Chromosphere
Doppler Shift
Jupiters red spot
Hydrostatic Equilibrium
38. Where is the center of the expansion
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
Sidereal Day
Cosmic Microwave Background
Total Eclipse
39. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)
Dark matter candidates
cosmology
Cepheid Variable
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
40. An energetic event taking place in the early universe
It does not have to expand into anything. It might just be that the 3 dimensions of space are getting bigger. It may also be that our 3 spatial dimensions are expanding into higher dimensions if such things exist.
Gamma-ray Burst
retrograde motion
quarks
41. The gap inthe outer portion of Saturn's A ring
Triple Alpha rocess
Electromagnetic Radiation: Gamma Ray
Enke gap
fewest moons
42. A high-pressure bulge in Neptune's southern hemisphere
MOONS: most geologically active
contrast northern lowlands and the southern highlands of mars...
great dark spots
Drake equation
43. Sc galaxies
epicycle
Main Sequence Stars
Thermonuclear Fusion
Flocculent spirals
44. A telescope that uses mirrors to focus light
Reflector
thinnest atmosphere
Sb spiral galaxy
Colestial Pole
45. When the Sun is farthest north of the celestial equator (about June 22)
protostar
Summer Solstice
Most dense
Disk
46. How did Earth come to have an oxygen rich atmosphere?
interstellar dust
Density Wave
Absorption Spectrum
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
47. A quantity measuring the stability of the Earth's atmosphere
Seeing
Gravitational Lens
Hyashi track
Hubble law
48. The relation that tells how light dims with distance.
Inverse Square Law
Blackbody
Neutron Star
Big Crunch
49. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
Electromagnetic Radiation: Infrared
Sa spiral galaxy
Rich vs poor clusters
Io (jupiters moon)
50. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)
Doppler Shift
Black Hole
Secondary Mirror
Interstellar Extinction