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Test your basic knowledge |
DSST Astronomy 2
Start Test
Study First
Subjects
:
dsst
,
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. Only one side
Moon Phases
Waning Moon
View of the moon
Death of the Sun
2. 23.56 hours
sun spot
cosmic microwave background radiation
Full Moon
Earth orbit
3. The phase of the Moon when an increasing amount of the Moon's near side is sunlit
Irregular Galaxy
neap tide
Waxing Moon
Zenith
4. Twice-yearly point at which the Sun reaches its greatest distance north or south of the equator
The Moon
365.2425 (Vernal Equinox year)
Solstice
Seasons
5. Alpha Centauri - 4.37 light years away OR Proxima Centauri - 4.24 light years away
plage
Closest star to the Sun
The Moon
Solar Eclipse
6. The universe originated 13.7 billion years ago from the cataclysmic explosion of a small mass of matter at extremely high density and temperature helium was present - universe is expanding and cooling
Big Bang Theory
Polaris
cosmic microwave background radiation
Sir Isaac Newton's laws
7. Sky as seen from wherever you happen to be standing; appears to be hemisphere or dome; only half of celestial sphere
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8. Galaxy with a very bright center that contains little dust and gas and is spherical to disklike in shape
Earth orbit
Equinox
AU (Astronomical Unit)
Elliptical Galaxy
9. A twice-monthly tide of minimal range that occurs when the Sun - Moon - and Earth are at right angles to each other - thus decreasing the total tidal force exerted on Earth causes North South pull
Equinox
neap tide
View of the moon
Spiral Galaxy
10. Imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator
Big Bang Theory
Lunar eclipse
Galactic Bulge
Meridian
11. New moon - (waxing or waning) crescent moon - quarter moon - (waxing or waning) gibbous moon - and full moon
Moon Phases
New Moon
Big Bang Theory
sun spot
12. Every thing revolves around the sun studied by Galelo and Copernicus
Big Bang Theory
heliocentric theory
local sky (observer's coordinates)
solar flare
13. Thick distribution of warm gas and stars around the galactic center.
Albert Einstein laws
Elliptical Galaxy
Lunar eclipse
Galactic Bulge
14. Two days of the year on which neither hemisphere is tilted toward or away from the sun
sun spot
Equinox
celestial sphere
Moon Phases
15. Cooler and not as bright as the surrounding areas and that is caused by the sun's magnetic feild
The Moon
sun spot
AU (Astronomical Unit)
Galactic Bulge
16. How long does it take for Earth to orbit the sun?
plage
sun spot
Meridian
365.2425 (Vernal Equinox year)
17. The phase of the moon in which three-fourths of the moon's side that faces earth is illuminated
Gibbous Moon
Local Group
Sir Isaac Newton's laws
celestial sphere
18. A gathering of roughly 30 Galaxies in which the Milky way belongs
Tidal Waves
Local Group
retrograde motion
Gibbous Moon
19. Sudden - violent eruption of electrically charged atomic particles from the sun's surface
Zenith
Lunar eclipse
solar flare
plage
20. A cycle of rise and drop in the ocean; caused be the gravitational pull of the Earth - Sun - and Moon.
Johannes Kepler' laws
Waxing Moon
Tidal Waves
Waning Moon
21. Imaginary sphere surrounding Earth on which celestial bodies are projected.
sun spot
Lunar eclipse
Extra terrestrial life theory
celestial sphere
22. Point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected
Zenith
plage
Johannes Kepler' laws
Extra terrestrial life theory
23. Apparent motion of the planets when they appear to move backwards (westward) with respect to the stars from the direction that they move ordinarily.
retrograde motion
Zenith
geocentric theory
Galactic Cross
24. When the Sun becomes a Red Giant - 10 billion years - Then a White Dwarf - aproximately 12 billion years
moon orbit
plage
Death of the Sun
Tidal Waves
25. The phase of the moon in which only a curved edge of the moon's side that faced earth is illuminated
Crescent Moon
spicule
New Moon
Galactic Bulge
26. 3 laws of Planetary Motion: 1. orbits are elliptical 2. Planets revolve at varying speeds 3. Planets revolve in proportion to distance from Sun
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27. Earth's average distance from the Sun - which is approximately 150 million kilometers.
cosmic microwave background radiation
Albert Einstein laws
AU (Astronomical Unit)
Tidal Waves
28. A galaxy that does not fit into any other category;
Johannes Kepler' laws
Galactic Cross
Irregular Galaxy
New Moon
29. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
retrograde motion
Solstice
Lunar eclipse
Big Bang Theory
30. The sun and stars move across the sky because of this - the stars rotate around Polaris - the North Star and make a complete circle around Polaris.
Spring tide
Earth orbit
Earth Rotation
Age of Sun
31. Moon phase that occurs when the Moon is between Earth and the Sun - at which point the Moon cannot be seen because its lighted half is facing the Sun and its dark side faces Earth
Polaris
Death of the Sun
solar flare
New Moon
32. Apparent line in the distance where the sky meets the sea or land
Meridian
Gibbous Moon
Local Group
Horizon
33. Earth is the center of the universe. Aristotelian.
Spiral Galaxy
cosmic microwave background radiation
sun core
geocentric theory
34. 1. Mass-Energy Equivalence (when a body has a mass it has a certain energy even if not moving); 2. General Relativity (gravitational attraction between masses is a result of the nearby masses. gravity has waves.)
Solstice
Gibbous Moon
retrograde motion
Albert Einstein laws
35. Highest tidal range that occurs to the alignment of Earth - the moon - and the sun - East West pull
Solstice
Spring tide
geocentric theory
Earth orbit
36. Example of a natural satellite - Earth's natural satellite
Galactic Cross
New Moon
The Moon
spicule
37. Possible since carbon based planets are common - especially on Mars and Alpha Centauri
Albert Einstein laws
moon orbit
Extra terrestrial life theory
Full Moon
38. 29.5 days
moon orbit
Full Moon
Solar Eclipse
Earth Rotation
39. Caused by the TILT of the Earth. - Summer = Northern hemisphere tilted closer to sun Winter = Northern hemisphere tilted farther from sun.
moon orbit
New Moon
Seasons
Galactic Cross
40. The phase of the Moon when a decreasing amount of the Moon's near side is sunlit
moon orbit
Earth Rotation
retrograde motion
Waning Moon
41. Galaxy with a bulge in the middle and arms that extend outward in a pinwheel pattern
celestial sphere
The Moon
Spiral Galaxy
Local Group
42. Jets of hot gas that extend from the Sun to around 20 -000 kilometers beyond the photosphere.
spicule
Age of Sun
Closest star to the Sun
Crescent Moon
43. The Milky way observed through a cross section - Our solar system is 27 -000 light years away from the Galactic bulge
New Moon
Tidal Waves
Galactic Cross
Local Group
44. Occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth
plage
Elliptical Galaxy
Solar Eclipse
sun spot
45. Almost directly over the North Pole - and does not seem to move at all. If the star rises perpendicular to the horizon - the observer is standing on the equator
Polaris
Earth Rotation
Waning Moon
Seasons
46. Closet star to earth - and is a glowing ball of gas made up of 3/4 hydrogen and 1/4 helium - Produces heat by fusion - provides the gravitational pull that keeps our solar system together
Galactic Cross
Polaris
Meridian
The Sun
47. 1. an object at rest willl stay at rest - and an object in motion will stay in motion at constant velocity unless acted upon by an unbalanced force 2. force = mass X acceleration 3. for every action there is an equal and opposite reaction
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48. Phase that occurs when all of the Moon's surface facing Earth reflects light.
Gibbous Moon
cosmic microwave background radiation
Full Moon
The Moon
49. 4.5 billion years
Age of Sun
Death of the Sun
Irregular Galaxy
Earth orbit
50. Bright regions seen in the solar chromosphere
Seasons
Waxing Moon
Irregular Galaxy
plage