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Astronomy Unit 1 Review
Astronomy Unit 1 Review
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Hudson High School Introduction to Astronomy, Unit 1 History of Astronomy
Flashcards
35 cards
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Practice quiz
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Host live
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Questions
35
Answers
1
What is a consequence of Kepler's 2nd law? (Planet orbits sweep equal areas in equal times)
Comets interfere with planet orbits.
Planets further away from Sun take longer to complete orbit.
Planets move faster when closer to sun.
Retrograde motion is explained.
2
Multiple-star systems were first observed in which era?
Renaissance
Classical
Modern
Prehistoric
3
Which of these is responsible for our day and night?
Earth's revolution around sun
Earth's tilt
Moon's orbit around Earth
Earth's rotation on axis
4
Who measured the size and relative distances of the Earth, Moon, and Sun?
Eudoxus
Aristarchus
Ptolemy
Galileo
5
Who was the Classical astronomer who put forth the heliocentric theory?
Brahe
Copernicus
Eudoxus
Aristarchus
6
What are the consequences of Earth's tilt of 23deg away from vertical?
precession
seasons
all of these
angle of sun's rays
7
What are the two primary reasons that prehistoric people watched the sun, moon, and stars?
Politics, Religion
Ceremonies, Stories
Timekeeping, Religion
Seasons, Farming
8
Who discovered Jupiter's moons (and showed that SOMETHING didn't orbit Earth!)?
Galileo
Brahe
Kepler
Newton
9
Which day is 24 hours long?
Lunar
Solar
Martian
Sidereal
10
How long does it take for Earth to complete one full revolution around the Sun?
none of these
1 month
1 year
1 day
11
What is the ecliptic?
The path of Earth's orbit around Sun
The circle of animal constellations
A and C
The path of the sun through the constellations
12
The northern hemisphere is tilted ____________ the sun at the spring equinox.
Away from
Toward
Neither of these
13
Who built very accurate instruments and recorded data that helped prove heliocentric theory?
Kepler
Eudoxus
Brahe
Galileo
14
On which scale is "zero" the coldest something can ever be?
Rankine
Celsius
Farenheit
Kelvin
15
Who was the first major astronomer to use a telescope for observation of the stars and planets?
Brahe
Galileo
Aristarchus
Kepler
16
Who calculated the circumference of Earth using shadows, angles, and a well in Egypt?
Aristotle
Eudoxus
Pythagorus
Erathosthenes
17
Larger telescopes in the modern era allowed us to see ____________________.
All of these
Galaxies
Nebulae
Supernovae
18
Who kept accurate records of comets, eclipses, supernovae, and sunspots?
Prehistoric people
Greeks
Asians
Islamics
19
Who came up with the 3 Laws of Planetary Motion?
Copernicus
Brahe
Aristarchus
Kepler
20
What is the name for the phenomenon when a planet appears to move "backward" against the stars?
Retrospective motion
Westward motion
Prograde motion
Retrograde motion
21
Why did Pythagoras believe the Earth was round?
Shadows during eclipse
Sphere was ideal shape
measurements he made
Curved horizons
22
Which of Kepler's laws can be used to explain retrograde motion?
1: Planets move in elliptical orbits.
None of these.
3: Time to orbit sun is related to orbit size.
2: Planet orbits sweep out equal areas in equal times.
23
Epicycles were _______________'s attempt to explain retrograde motion using spherical orbits.
Copernicus
Ptolemy
Aristotle
Erathosthenes
24
Who invented the modern study of motion, optics, gravity, and calculus?
Brahe
Galileo
Newton
Kepler
25
Where do the Celestial Poles lie?
Toward Polaris, the North Star
On Celestial Sphere, perpendicular to Earth's orbit
At the Sun's poles of rotation
On Celestial Sphere, above Earth's magnetic poles
26
What did Eudoxus' geocentric model fail to explain?
Retrograde Motion
Perihelion
Zodiac
Parallax
27
Star rise to star rise is called a ___________________.
sidereal year
sidereal day
solar year
solar day
28
The northern hemisphere has its longest daytime on the _____________________.
spring equinox
summer solstice
fall equinox
winter solstice
29
Earth is closest to the sun during which northern hemisphere season?
Aphelion
Perihelion
Winter
Summer
30
What is Kepler's 1st law?
Planet orbits sweep out equal areas in equal times.
Bodies with mass attract each other.
Planets move in elliptical orbits.
The orbit period is related to the orbit size.
31
Which term means "closest approach to the sun"?
aphelion
equinox
solstice
perihelion
32
The heliocentric model places the __________ at the center of the solar system.
Moon
Sun
Earth
None of these
33
Which of these is responsible for stars/sun rising in the east and setting in the west?
Celestial Sphere turning around Earth
Moon's orbit around Earth
Earth's revolution around the Sun
Earth's rotation on axis
34
What word represents the period of time from a full moon back to a full moon?
Day
Month
Year
Minute
35
Who contributed names of bright stars and multiple math concepts to the study of astronomy?
Islamics
Ptolemy
Aristarchus
Asians
