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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. Phase that occurs when all of the Moon's surface facing Earth reflects light.
Solstice
Earth Rotation
Full Moon
Galactic Bulge
2. The phase of the moon in which only a curved edge of the moon's side that faced earth is illuminated
Moon Phases
Solar Eclipse
geocentric theory
Crescent Moon
3. Imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator
Tidal Waves
Solar Eclipse
Zenith
Meridian
4. Every thing revolves around the sun studied by Galelo and Copernicus
plage
Waxing Moon
heliocentric theory
Meridian
5. Galaxy with a bulge in the middle and arms that extend outward in a pinwheel pattern
Solar Eclipse
Spiral Galaxy
Earth Rotation
sun core
6. Example of a natural satellite - Earth's natural satellite
Johannes Kepler' laws
solar flare
Moon Phases
The Moon
7. 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
The Moon
Zenith
8. Sudden - violent eruption of electrically charged atomic particles from the sun's surface
solar flare
Big Bang Theory
Sir Isaac Newton's laws
Albert Einstein laws
9. Alpha Centauri - 4.37 light years away OR Proxima Centauri - 4.24 light years away
Albert Einstein laws
Galactic Bulge
Sir Isaac Newton's laws
Closest star to the Sun
10. How long does it take for Earth to orbit the sun?
365.2425 (Vernal Equinox year)
Earth orbit
Tidal Waves
sun spot
11. 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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12. 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
Spiral Galaxy
Big Bang Theory
Seasons
heliocentric theory
13. The phase of the moon in which three-fourths of the moon's side that faces earth is illuminated
cosmic microwave background radiation
Full Moon
Gibbous Moon
Solstice
14. Caused by the TILT of the Earth. - Summer = Northern hemisphere tilted closer to sun Winter = Northern hemisphere tilted farther from sun.
Seasons
Zenith
Solar Eclipse
solar flare
15. Highest tidal range that occurs to the alignment of Earth - the moon - and the sun - East West pull
View of the moon
sun spot
Spring tide
Big Bang Theory
16. Jets of hot gas that extend from the Sun to around 20 -000 kilometers beyond the photosphere.
spicule
Meridian
cosmic microwave background radiation
Big Bang Theory
17. A cycle of rise and drop in the ocean; caused be the gravitational pull of the Earth - Sun - and Moon.
Zenith
Tidal Waves
Waxing Moon
sun core
18. 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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19. Only one side
Extra terrestrial life theory
heliocentric theory
Spiral Galaxy
View of the moon
20. Cooler and not as bright as the surrounding areas and that is caused by the sun's magnetic feild
sun spot
celestial sphere
solar flare
The Sun
21. Galaxy with a very bright center that contains little dust and gas and is spherical to disklike in shape
Galactic Bulge
Elliptical Galaxy
View of the moon
Equinox
22. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
Age of Sun
Lunar eclipse
celestial sphere
Galactic Cross
23. Thick distribution of warm gas and stars around the galactic center.
Full Moon
geocentric theory
Polaris
Galactic Bulge
24. Earth's average distance from the Sun - which is approximately 150 million kilometers.
Death of the Sun
Full Moon
AU (Astronomical Unit)
View of the moon
25. Bright regions seen in the solar chromosphere
Closest star to the Sun
celestial sphere
Meridian
plage
26. 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.
Lunar eclipse
Earth Rotation
Earth orbit
celestial sphere
27. The phase of the Moon when an increasing amount of the Moon's near side is sunlit
Waxing Moon
Elliptical Galaxy
Gibbous Moon
Solar Eclipse
28. 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
neap tide
New Moon
Elliptical Galaxy
Tidal Waves
29. Dense - fusion takes place here (15 -000 -000K)
Tidal Waves
Waning Moon
sun core
Sir Isaac Newton's laws
30. A galaxy that does not fit into any other category;
Irregular Galaxy
Seasons
Waxing Moon
heliocentric theory
31. A gathering of roughly 30 Galaxies in which the Milky way belongs
Horizon
Local Group
heliocentric theory
neap tide
32. The Milky way observed through a cross section - Our solar system is 27 -000 light years away from the Galactic bulge
sun core
cosmic microwave background radiation
Sir Isaac Newton's laws
Galactic Cross
33. Two days of the year on which neither hemisphere is tilted toward or away from the sun
Gibbous Moon
Equinox
Johannes Kepler' laws
Age of Sun
34. Occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth
365.2425 (Vernal Equinox year)
View of the moon
Age of Sun
Solar Eclipse
35. 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.)
AU (Astronomical Unit)
Albert Einstein laws
Elliptical Galaxy
plage
36. Point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected
Galactic Cross
Zenith
Seasons
local sky (observer's coordinates)
37. The phase of the Moon when a decreasing amount of the Moon's near side is sunlit
Death of the Sun
Waning Moon
Earth orbit
AU (Astronomical Unit)
38. 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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39. When the Sun becomes a Red Giant - 10 billion years - Then a White Dwarf - aproximately 12 billion years
Moon Phases
AU (Astronomical Unit)
Death of the Sun
Tidal Waves
40. 29.5 days
Moon Phases
spicule
Lunar eclipse
moon orbit
41. New moon - (waxing or waning) crescent moon - quarter moon - (waxing or waning) gibbous moon - and full moon
Polaris
Moon Phases
Lunar eclipse
Death of the Sun
42. 23.56 hours
Lunar eclipse
The Moon
heliocentric theory
Earth orbit
43. 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
Waning Moon
sun spot
The Sun
44. Imaginary sphere surrounding Earth on which celestial bodies are projected.
heliocentric theory
View of the moon
celestial sphere
Lunar eclipse
45. Remnant radiation from the big bang - which we detect using radio telescopes
plage
Earth orbit
cosmic microwave background radiation
View of the moon
46. Apparent line in the distance where the sky meets the sea or land
celestial sphere
Horizon
Spring tide
Sir Isaac Newton's laws
47. 4.5 billion years
Gibbous Moon
Age of Sun
Closest star to the Sun
Spiral Galaxy
48. 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
solar flare
sun core
Horizon
49. Possible since carbon based planets are common - especially on Mars and Alpha Centauri
plage
Johannes Kepler' laws
Elliptical Galaxy
Extra terrestrial life theory
50. Earth is the center of the universe. Aristotelian.
Earth orbit
sun core
geocentric theory
Meridian