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68 Cards in this Set

  • Front
  • Back
What are the progression of changes in the moon's appearance during the month
phases of the moon
What is the point at which the moon is farthest from Earth in its orbit
apogee
What are the traces out a cone over a period of 26,000 years
precession
what are the two main motions of Earth
rotation and revolution
what is the turing or spinning of a body on its axis
rotation
what is the time in July when Earth is farthest from the sun
Aphelion
Who concluded that Earth is a planet
Nicolaus Copernicus
What is the apparent westward motion of the planets with respect to the stars
retrograde motion
who created a model of the universe that accounted for the movement of the planets
ptolemy
State one of Kepler's laws of planetary motion
the path of each planet around the sun is an ellipse, with the sun at one focus
What is one of Kepler's three laws of planetary motion
Each planet revolves so that an imaginary line connecting it to the sun sweeps over equal areas in equal time intervals
What is the last of Kepler's three laws of planetary motion
The square of the length of time it takes a planet to orbit the sun is proportional to the cube of its mean distance to the sun
Briefly explain the Geocentric model
the moon, sun, and the known planets orbit Earth
Briefly explain the Heliocentric model
Earth and the other planets orbit the sun
What is the science that studies the universe
Astronomy
What is an oval-shaped path
ellipse
What is the point at which the moon is closest to the Earth
perigee
The solar system speeds in the direction of the star
vega
What is a result of the motion of the moon and the sunlight that is reflected from its surface
moon phase
What is a depression produced by a meteorite impact
crater
Who was the first astronomer to formulate and test the law of universal gravitation
Newton
What does the gravitational force do with distance
decrease
what is one of the discoveries that Galileo made
planets are disks
what is another discovery that Galileo made
the discovery that the sun had sunspots, or dark regions
What is one of the four important discovery that Galileo made
the discovery that venus has phases just like the moon
What is the last discovery that Galileo made
the discovery that the planets are circular disks, not just points of light
An astronomical unit is about how many kilometers and how many miles
150,000,00 kilometers and 93,000,000
What is the time in January when Earth is closest to the sun
Perihelion
What says is the time it takes for Earth to make one complete rotation with respect to a star other than the sun
sidereal day
What is a long channel associated with lunar maria
rille
What is thin, gray layer on the surface of the moon
lunar regolith
what are any system of bright, elongated streaks, sometimes associated with a crater on the moon
rays
most of the lunar surface is made up of densely pitted light-colored areas known as what
highlands
What are ancient beds of basaltic lava, originated when asteroids punctured the lunar surface
maria
what is the month based on the cycle of the moon's phases
syndic
What month is the true period of the moon's revolution around Earth
sidereal
what occurs when the moon passes through Earth's shadow
lunar eclipse
an eclipse of the moon can only occur when the moon is the what phase
full moon
what can occur when the moon moves in a line directly between Earth and the sun
solar eclipse
what is the period of Pluto in Earth years
247.70
What is the solar distance of Earth in A.U.'s
1.0
How much dud Galileo's telescope magnify distance objects
three times the size seen by the unaided eye
What are the names of five noted scientists that were responsible for the birth of modern astronomy
Galileo Galileo, Johannes Kepler, Nicolaus Copernicus, Tycho Brahe, and Sir Isaac Newton
What scientists concluded that the Earth was round
Aristotle
The first successful attempt to establish the size of the Earth is credited to
Eratosthenes
What is the period of Mercury in Earth years
0.24
What is the solar distance of Uranus
19.18 A.U.
What is the period of Jupiter in Earth years?
11.86
What is the solar distance of Saturn
9.54 A.U.
What is the period of Neptune in Earth years
164.8
What is the period of Venus in Earth years
0.62
What is the total number of eclipses
The usual number of eclipses is four. One set of solar and one set of lunar eclipse. Followed six months later with another set.
What is the maximum that can occur in a year
The total number of eclipses in one year isn't more than seven.
What is Earth's orbit of speed
107,000 kilometers is Earth's orbit of speed
How did Aristotle conclude that the Earth is round
It always casts a curved shadow on the moon when it passes between the sun and moon. He's belief that the EArth is round was largely abandoned in the Middle Ages
Which Astronomer spent 20 years on the planets
Tycho Brahe
What is revolution
the motion of one body about another, as Earth about the sun
What was Hipparchus known for
He was best known for his star catalog. He determined the location of almost 850 stars, which he divided into six groups according to their brightness.
Which eclipses are you most likely to experience
lunar eclipse
How old is the moon
about 4 and a half billion years old
Which scientists discovered that venus has phases
Galileo Galilei
Who was the first to make an accurate measure of the earth's size
Eratosthene
Phases of the moon
New, crescent (waxing), first quarter, Gibbous (waxing), full, gibbous (wanning), third quarter, and crescent (wanning)
Measure of a total matter an object has
60-kg
Approximate length of day and night on the moon
27 1/3 Earth days
What is the new moon phase
The moon disappears altogether.
What is the first quarter phase
when the moon can be seen from about noon to midnight
What is the full moon phase
when the moon can be seen rising in the east as the sun is sinking in the west