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Q 1/91
Score 0
A device built to observe distant objects by making them appear closer
30
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Q 2/91
Score 0
energy that travels through space in the form of waves
30
Users re-arrange answers into correct order
91 questions
Q.
A device built to observe distant objects by making them appear closer
1
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energy that travels through space in the form of waves
2
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Electromagnetic radiation that can be seen with the unaided eye
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Horizontal distance between the crests or between the troughs of two adjacent waves
4
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colored band/range of colors produced when a beam of light passes through a prism
5
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a telescope that uses lenses or mirrors to collect and focus visible light
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A telescope that uses convex lenses to gather and focus light
7
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a lens that is thicker in the middle than at the edges and bends light rays towards one another
8
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A device that brings visible light to a focus with mirrors
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A device used to detect radio waves from objects in space
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a building that contains one or more telescopes--large observatories are often located on mountaintops or in space
11
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A pattern or grouping of stars that people imagine to represent a figure or object
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a device that breaks light into colors and produces an image of the resulting spectrum
13
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the brightness of a star as seen from Earth
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the brightness a star would have if it were at a standard distance from earth
15
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The distance light travels in one year
16
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The apparent shift in the position of an object when viewed from different locations
17
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a graph comparing star magnitude (brightness) and luminosity (temperature)
18
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a diagonal area on an H-R diagram that includes more than 90 percent of all stars
19
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A large cloud of gas and dust in space, spread out in an immense volume
20
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A contracting cloud of gas and dust with enough mass to form a star
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A small, hot, dim star that is the leftover center of an old star
22
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Star that results when a white dwarf stops giving off energy
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A gigantic explosion in which a massive star collapses and throws its outer layers into space
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The remains of high-mass stars
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A rapidly spinning neutron star that emits rapid pulses of radio and optical energy
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An object in space whose gravity is so strong not even light can escape
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A star system with two stars that revolve around each other
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A binary star system in which one star periodically blocks the light from the other
29
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A star cluster that has a loose, disorganized appearance and contains no more than a few thousand stars
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Spherical region filled with thousands of closely-spaced older stars
31
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A collection of stars, dust, and gas bound together by gravity
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a galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
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A galaxy shaped like a round or flattened ball, generally containing only old stars
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A galaxy that has an undefined shape; irregular galaxies have large numbers of young stars and greats amounts of gas and dust are usually found near larger galaxies
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An enormously bright, distant galaxy with a giant black hole at its center
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A large spiral galaxy that is home to Earth and the rest of our solar system, and about a trillion stars
37
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All of space and everything in it
38
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A mathematical method of writing numbers using powers of ten
39
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Astronomical unit; the average distance between Earth and the sun, about 150 million kilometers
40
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The theory that the universe originated 20 billion years ago from the cataclysmic explosion of a small mass of matter at extremely high density and temperature
41
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The observation that the further away a galaxy is the faster it's moving away
42
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Electromagnetic radiation left over from the big bang
43
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A large cloud of gas and dust such as the one that formed our solar system
44
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Small planetary objects that form through the action of gravity during the birth of a solar system
45
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Matter that does not give off electromagnetic radiation
46
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a mysterious force that appears to be causing the expansion of the universe to accelerate
47
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A model of the universe in which Earth is at the center of the revolving planets and stars.
48
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A model of the solar system in which Earth and the other planets revolve around the sun
49
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A elongated circle, or oval shape, the shape of orbit of comets
50
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The central part of the sun, where nuclear fusion occurs
51
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A nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy
52
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A region of very tightly packed gas where energy is transferred mainly in the form of electromagnetic radiation
53
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Outermost layer of the sun's interior
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The middle layer of the sun's atmosphere
55
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The outer layer of the sun's atmosphere
56
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A stream of electrically charged particles produced by the sun's corona
57
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A dark area of gas on the sun's surface that is cooler than surrounding gases
58
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A loop of gas that protrudes from the sun's surface, linking parts of sunspot regions
59
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A sudden eruption of intense high-energy radiation from the sun's surface
60
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The name given to the four inner planets: Mercury, Venus, Earth, and Mars
61
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Process by which atmospheric gases trap heat close to Earth's surface and prevent it from escaping into space
62
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a large planet of relatively low density consisting predominantly of hydrogen and helium, such as Jupiter, Saturn, Uranus, or Neptune
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A thin disk of small ice and rock particles surrounding a planet
64
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a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbit
65
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The fuzzy outer layer of a comet
66
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A region of the solar system that is just beyond the orbit of Neptune and that contains small bodies made mostly of ice
67
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A spherical region of comets that surrounds the solar system
68
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objects revolving around the sun that are too small and too numerous to be considered planets
69
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A chunk of rock or dust in space
70
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The movement of an object around another object
71
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The path of an object as it revolves around another object in space
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The spinning motion of a planet on its axis
73
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An imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates
74
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365 1/4 days
75
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tilt of earth's axis
76
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The two days of the year on which neither hemisphere is tilted toward or away from the sun
77
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either of the two times in the year, the summer solstice and the winter solstice, when the sun reaches its highest or lowest point in the sky at noon, marked by the longest and shortest days.
78
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the scientific law that states that every object in the universe attracts every other object
79
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Resistance of an object to a change in its motion
80
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Occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth
81
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the blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
82
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The tide with the greatest difference between consecutive low and high tides
83
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A less than average tide occurring at the first and third quarters of the moon
84
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Dark, flat areas on the moon's surface formed from huge ancient lava flows.
85
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A large round pit caused by the impact of a meteoroid
86
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moon mountains
87
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A chunk of rock or dust in space
88
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Q.
The moon's temperature varies greatly from day to night because it has no ________________________________________.
89
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a space of partial illumination (as in an eclipse) between the perfect shadow on all side and full light
90
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The darkest part of a shadow where all light is blocked
