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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. Electromagnetic Radiation
Big Crunch
A family of radiant energy- includes light
quarks
Emission Spectrum
2. The telescope configuration that has the focus placed at the back of the primary mirror
asteroid
Cassegrain Focus
Apparent Magnitude
Light Curve
3. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)
differential rotation
general star population
Kuiper belt
Open Cluster
4. An element of a highly efficient - two-dimensional electronic light detector
Light Gathering Power
Sunspots
Pixel
solar nebula
5. A star that is burning hydrogen to helium in a shell surrounding it's core
meteoriod
Shepherd satellite
Red Giant Branch Star
MOONS: most geologically active
6. A subatomic particle with a negative charge. It creates light.
Electron
Summer Solstice
great dark spots
The Big Bang Theory
7. The surface of the sun
CMB
MOONS: most geologically active
Photosphere
A family of radiant energy- includes light
8. The apparent backward motion of a planet against the background of stars.
rotation curve = dark matter?
density parameter
High and low pressure which stretch into bands due to the rapid differential rotation. deeper - darker colors are in the belts and zones are lighter
retrograde motion
9. The area behind a lens where images are resolved
Planetary Nebula
radio galaxy
We don't know. It might be but does not have to be.
Focal Plane
10. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
CCD
Superior planets
Perihelion
Sa spiral galaxy
11. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
fusion crust
shape and color of ELLIPTICAL galaxies
Proton-proton chain
cosmic fireball
12. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.
greatest elongation
density waves
Nova
Metals
13. The location in the Milky Way where stars orbit like a solid wheel
Apollo asteroids
Colestial Pole
Bulge
open star clusters
14. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
Photon
Rich vs poor clusters
regolith
epicycle
15. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)
H2 Regions
self-propagating star formation
Blackbody
Rich Cluster
16. A term referring to the orbital character of stars near the Sun
Positive - Converge - Greater than 1
blazar
Photon
Differential Rotation
17. When material is heated and moves taking the heat energy with it
Umbra
Gravitational Lens
Convection
great red spot
18. Possible Fates of the Universe
Gravity only pulls matter back together. Therefore - if gravity is the only force that operates on cosmic scales then the expansion of the universe should decrease with time. The critical density is the value of matter density sufficient to halt the
Kuiper belt
Electromagnetic Radiation: Microwave
Spectral Lines
19. The lowest energy of an atom.
CCD
acceleration
Ground State
Bok Globule
20. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Planetary Nebula
Ecliptic
Gamma ray bursts
Io (jupiters moon)
21. The entity from which the whole universe is postulated to have come from.
Summer Solstice
cosmic singularity
Vernal Equinox
nucleus
22. A method of finding a star's distance from its absolute magnitude and spectral type or color.
belt
Poor Cluster
most eccentric orbit
Spectroscopic Parallax
23. VENUS
Limb darkening
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
regolith
scarp
24. Neptune or uranus
molecular clouds
thinnest atmosphere
nova
Coldest surface
25. Matter that reveals itself only through its gravitational attraction.
Neutron Star
Nucleus
dark matter
isotropic
26. Why does the earth have few craters while the moon has many?
weight
Absorption Spectrum
accretion
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
27. Moon in less than the angular diameter of the Sun.
Annular Eclipse
Doppler Shift
Galilean satellite
Enke gap
28. A spinning neutron star
great red spot
Prominence
Pulsar
difference between maria and highlands of the moon.
29. Elliptical orbits that come inside orbit of the Earth.
Wein's Law
Dark matter candidates
Apollo asteroids
supermassive black hole
30. A word used in astronomy to describe all elements besides hydrogen and helium
Metals
tectonics of Venus
Coronal Loop
Absorption Spectrum
31. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
Gravitational Lens
deferent
opposition
aphelion
32. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.
tectonics of Mars
A family of radiant energy- includes light
Terrestrial Planets
Filament
33. The part of the Milky way that has on-going star formation
Disk
Liquid metallic hydrogen
Coronal Loop
interstellar dust
34. Hydrogen and helium (mainly)
Flat - Remain Parallel - Exactly 1
Astronomical Unit
Make up of the jovian planets
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
35. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
Triple Alpha rocess
opposition
Hydrostatic Equilibrium
solar nebula
36. What is the universe expanding into?
Make up of the terrestrial planets
MOONS: larger than mercury
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.
Trojan asteroids
37. When the Sun is farthest south of the celestial equator (About December 22)
Europa (Jupiters moon)
Winter Solstice
Colestial Pole
How is winding dilemma solved?
38. A plot of star absolute magnitude verses spectral type.
H-are Diagram
direct motion
H2 Regions
meteorite
39. The mirror that determines the focus configuration of a reflector
Halo
Secondary Mirror
most eccentric orbit
The Local Group
40. A word meaning 'the same in all directions.'
Make up of the terrestrial planets
isotropic
great red spot
Halo
41. The rotation period of the Earth measured relative to the stars.
conjunction
Sidereal Day
shape and color of ELLIPTICAL galaxies
Thermal Equilibrium
42. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR
contrast northern lowlands and the southern highlands of mars...
supernova
Occam's razor
self-propagating star formation
43. The surface of the sun
Black Hole
Photosphere
Brown dwarf
Apparent Magnitude
44. The law stating that hotter blackbodies look bluer than cooler blackbodies.
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45. The number of protons in an atom.
Vernal Equinox
tectonics of Venus
accretion disk
Atomic Number
46. Mercury
Photosphere
smallest diameter
density
Main Sequence
47. The mass of an object divided by its volume
density
standard candle
Steady State Theory (Leads to Olber's Paradox)
Io (jupiters moon)
48. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Spectroscopic Parallax
Vernal Equinox
aurora
Rich vs poor clusters
49. Venus
CNO Cycle
hottest surface
Seyfert galaxy
Asymptotic giant Branch Star
50. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core
Shepherd satellite
Asymptotic giant Branch Star
MOONS: most geologically active
rotation curve = dark matter?