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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. 10^2 nm 10^7 nm
E=mc2
Cosmic Microwave Background (CMB)
Magnification
Electromagnetic Radiation: Gamma Ray
2. The wavelengths where a specific element can absorb or emit light.
Make up of the jovian planets
most moons
H2 Regions
Spectral Lines
3. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
Kuiper belt
Neutron Star
Rich vs poor clusters
H2 Regions
4. A word used in astronomy to describe all elements besides hydrogen and helium
Ecliptic
Kuiper belt
Metals
isotropic
5. A star that blows itself apart
radio galaxy
Density Wave
Supernova (You can be my supernova girl)
MOONS: most geologically active
6. A measure of the force of gravity on an object
weight
belt
Pulsar
Oort Cloud
7. Mercury - Venus - Earth - Mars
Prominence
Oort Cloud
direct motion
Terrestrial Planets
8. The oldest terrain on the moon
highlands
Liquid metallic hydrogen
Seeing
Nucleus
9. A high-pressure bulge in Neptune's southern hemisphere
Horizontal Branch Star
great dark spots
Thermal Equilibrium
Gamma-ray Burst
10. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.
coma
Halo
Autumnal Equinox
Eclipses of the Moons of Jupiter
11. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
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.
Rich Cluster
epicycle
CCD
12. A faint - remarkably uniform distribution of radiation in space
Cosmic Microwave Background
fastest rotation
Occam's razor
Oort Cloud
13. A repeated - periodic push or pull capable of summing into a larger push or pull
Parallax
Chromosphere
opposition
resonance
14. Why does the earth have few craters while the moon has many?
greehouse effects
Kirkwood gaps
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
meteorite
15. The study of the universe as a whole.
cosmology
Cosmic Microwave Background
synchronous rotation
Steady State Theory (Leads to Olber's Paradox)
16. A push or a pull
Galilean satellite
force
Sa spiral galaxy
great red spot
17. Any change in the speed or direction of an object's motion
Bulge
Cosmic Microwave Background (CMB)
cosmology
acceleration
18. The slow wobble of the Earth on its rotation axis.
Precession
Penumbra
greehouse effects
Make up of the terrestrial planets
19. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting
difference between maria and highlands of the moon.
E=mc2
Big Crunch
planetesimal
20. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this
Spectroscopic parallax
Trojan asteroids
chondrite
Kuiper belt
21. The law stating that hotter blackbodies look bluer than cooler blackbodies.
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22. The entity responsible for spiral arms in grand-design spiral galaxies
Spectroscopy
Density Wave
aphelion
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
23. When the Moon entirely blocks the Sun.
Yes - frozen at the poles- remains protected from the suns rays
Focal Plane
thinnest atmosphere
Total Eclipse
24. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.
3 reasons we orbit satellites to observe universe
Planetary Nebula
Photosphere
aphelion
25. First accurately measured the speed of light in a vacuum
cosmic fireball
CNO Cycle
Ole Roemer
Maria
26. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
Electromagnetic Radiation
evidence of water on mars
highlands
radiation dominated universe
27. A fusion process in which protons build together to form helium
Proton-proton chain
Light: travels like a wave - detected like a particle
Gamma ray bursts
Observations of distant type Ia supernovae indicate that the expansion of the universe is speeding up with time - not slowing down! So there must be a force causing this.
28. An evolved star - past the helium flash that is burning helium to carbon in it's cores
Precession
Seyfert galaxy
Horizontal Branch Star
Convection
29. The temp at which a substance in the vacuum of space solidifies
general star population
condensation temperature
Triple Alpha rocess
meteor
30. The law that predicts the possible types of spectra.
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31. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.
The Local Group
Extrasolar Planet
Negative - Diverge - Less than 1
asteroid
32. The shadow area behind the Earth or Moon where the Sun is completely obscured.
Negative - Diverge - Less than 1
Umbra
deferent
Synodic Day
33. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes
weight
Blackbody
Quasar
Spectroscopic parallax
34. 1μm 100 nm
Celestial Equator
Electromagnetic Radiation: Visible Light
MOONS: thickest atmosphere
quasar
35. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)
planetary nebula
Black Hole
Annular Eclipse
hottest surface
36. 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
Neutron Star
Red Giant
quasar
37. The location of a supermassive black hole
The Big Bang Theory resolves Olber's Paradox
Nucleus
Planetary Nebula
Prominence
38. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
meteor
molecular clouds
regolith
Dark Matter
39. The location of a supermassive black hole
Positive - Converge - Greater than 1
Olber's paradox
Negative - Diverge - Less than 1
Nucleus
40. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
supermassive black hole
High Velocity Stars
Umbra
Grand design spirals
41. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto
accretion disk
Parallax
Meridian
Kuiper belt
42. Light scattered through the atmosphere that degrades astronomical images
Kuiper belt
Photometry
Light Pollution
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
43. The mass of an object divided by its volume
Colestial Pole
Sunspots
density
fusion crust
44. The relation that tells how light dims with distance.
Ground State
Nucleus
Inverse Square Law
Limb darkening
45. Light-colored high-pressure bands in Jupiter's atmosphere
Synodic Day
era of recombination
zone
Jupiters red spot
46. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.
solar nebula
supernova
Electromagnetic Radiation
mapping the structure of Milky Way disk
47. The apparent path of the Sun through the stars on the celestial sphere.
Flocculent spirals
Callisto (Jupiter)
Radio Galaxy
Ecliptic
48. A spinning neutron star
Coldest surface
self-propagating star formation
general star population
Pulsar
49. When one side of a body always faces the planet it revolves around
gravity
standard candle
synchronous rotation
nova
50. Venus
Halo
Winter Solstice
Roundest orbit
Io (jupiters moon)