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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. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)
chemical differentiation
blazar
rotation curve=winding dilemma?
Disk
2. Jupiter
evidence of water on mars
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.
Limb darkening
Largest diameter
3. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object
Gravitational Lens
mass
scarp
most moons
4. Half of the longest diameter across an ellipse
Celestial Sphere
If it is in a denser medium - such as glass - it will move slower
Doppler Shift
semimajor axis
5. The amount an image is enlarged by a telescope
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Magnification
Nova
Europa (Jupiters moon)
6. The force of attraction between any two objects having mass
Nebula
gravity
Photon
radio galaxy
7. A subatomic particle with a negative charge. It creates light.
mare basalt
radio galaxy
Electron
Superior planets
8. A small and dim but hot star.
Photon
White Dwarf
Eyepiece Lens
Supercluster
9. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
contrast northern lowlands and the southern highlands of mars...
AGN
Open Cluster
fastest rotation
10. A very dense - highly populated cluster of galaxies
Titus-Bode Law
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Rich Cluster
interstellar dust
11. A term referring to the orbital character of stars near the Sun
meteor shower
Differential Rotation
Horizontal Branch Star
Objective Lens
12. A change in the appearance of the sun at the edge of the solar disk
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Bok Globule
Limb darkening
highlands
13. A logarithmically scaled value for the measured brightness of a star.
Parsec
Apparent Magnitude
Yes - frozen at the poles- remains protected from the suns rays
Light Curve
14. The oldest part of the Milky Way
differential rotation
Halo
Dwarf planets
Synchrotron Rotation
15. The rock that makes up the lunar maria
mare basalt
Quasar
Liquid metallic hydrogen
fusion crust
16. The name for the only seriously considered theory of the universe.
Kuiper belt
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.
Big Bang
Ganymede (Jupiter)
17. A telescope that uses lenses to focus light
Maria
Electromagnetic Radiation: Gamma Ray
Synodic Day
Refractor
18. What Ole Roemer used to measure the speed of light in a vacuum
Eclipses of the Moons of Jupiter
Chandrasekhar Limit
Differential Rotation
resonance
19. Dark areas on the sun that are cooler than the surrounding photosphere
Objective Lens
Metals
Sunspots
E=mc2
20. The measure of a variable star's apparent magnitude as it brightens and dims with time
radiation dominated universe
Kuiper belt
Pixel
Light Curve
21. Long - meandering cliff formed when a planet surface cools and shrinks
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Spectroscopic parallax
Apollo asteroids
scarp
22. A streak of light in the atmosphere
meteor
Dwarf planets
Nova
cosmic fireball
23. Mercury
radio galaxy
Electromagnetic Radiation
radio lobe
thinnest atmosphere
24. The average distance between the Earth and the Sun (=1.5 x10^8km)
Astronomical Unit
Heliocentric
great dark spots
Ground State
25. The layer of the sun just above the photosphere
CMB
Big Crunch
3 reasons we orbit satellites to observe universe
Chromosphere
26. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.
Black Hole
Brown dwarf
Gamma ray bursts
The Big Bang Theory
27. A large and bright but cool star.
Instability strip
Pixel
Red Giant
cosmic fireball
28. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula
reflection star clusters
Gamma ray bursts
Instability strip
Resolving Power
29. Hot cells of gas that rise and fall in the hotosphere
radio galaxy
Sb spiral galaxy
Ground State
Granules
30. A quantity measuring the stability of the Earth's atmosphere
Coldest surface
Seeing
Dark matter candidates
blazar
31. A spread of light with an uninterrupted wavelength distribution of energy.
Colestial Pole
Continuous Spectrum
Big Crunch
Planck time
32. The point in its orbit where a planet is nearest the sun
planetary nebula
Cosmic Microwave Background
Perihelion
Energy Level
33. A spinning neutron star
Granules
Sa spiral galaxy
Pulsar
Gamma ray bursts
34. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.
smallest diameter
open star clusters
Dwarf planets
The Big Bang Theory
35. A perfect absorber and radiator of electromagnetic radiation.
rotation curve = dark matter?
Blackbody
supermassive black hole
Pulsar
36. The high- temperatature outer layer of the sun
Corona
Horizontal Branch Star
Coronal Loop
Negative - Diverge - Less than 1
37. 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
reflection star clusters
plate tectonics
supernova
fastest rotation
38. When particles are compressed to an unnatural state where their pressure is not related to their temperature
Black Hole
Eclipses of the Moons of Jupiter
Degeneracy
Winter Solstice
39. The slow wobble of the Earth on its rotation axis.
Precession
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.
force
Corona
40. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE
anorthosite
In an expanding universe all galaxies see all other galaxies that are not gravitationally bound to them receding away. This is what we see in the Hubble Law. We infer that the Hubble law also holds true for all other galaxies.
Ganymede (Jupiter)
Dwarf planets
41. Mercury
Metals
thinnest atmosphere
gravity
Spectroscopic parallax
42. Either Io -Europa - Ganymede - or Callisto
Photon
Spectroscopy
Galilean satellite
If it is in a denser medium - such as glass - it will move slower
43. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)
Dark matter candidates
Light: travels like a wave - detected like a particle
general star population
evidence of water on mars
44. A spectrum of light with energy at only a few wavelengths.
Emission Spectrum
Blackbody
coma
Light Curve
45. The organization of clusters of galaxies into sheets and strings
belt
White Dwarf
Supercluster
jovian
46. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie
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47. The sinking of denser elements to the center of a young molten planet
least dense
radio lobe
Chandrasekhar Limit
chemical differentiation
48. Sc galaxies
Flocculent spirals
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Nova
density waves
49. An object that may remain after a star explodes
Coldest surface
Flare
Neutron Star
interstellar dust
50. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig
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