The earth's rotation really makes my day (name the concept)
The point in a planet’s orbit at which it is farthest from the sun
aphelion
Which of the 8 planets do not have moons?
Mercury and Venus
What planet is particularly known for its rings?
Saturn
True/False: The surface of the moon is tough and firm
False; it is covered with a layer of dust and rocks
The different shapes of the moon made visible by reflected sunlight
Phases
Planets move faster when they are closer to the sun, than when they are farther from the sun
Kepler's 2nd Law
True/False: All planets spin on their axes in the same direction.
False; Venus and Uranus have a retrograde rotation
True/False: All the outer planets have rings
True
The point in the moon’s orbit at which it is farthest from the Earth
apogee
The moon after the full moon and before the new moon, when its appearance is shrinking
Waning moon
The point in a planet’s orbit at which it is closest to the sun
perihelion
Which of the inner planets has the strongest gravity?
Earth
Name three ways that the outer planets are alike
Each planet is larger than any of the inner planets;
They all have rings; and
The most common element in each are hydrogen and helium.
What are the long channels in the moon's surface?
rilles
How often does a new moon phase occur?
once a month
Planets move around the sun not in circles but in elliptical orbits
Kepler's 1st Law
Which of the terrestrial planets has water only in ice and vapor form?
Mars
Which two elements are present in great quantities in all the gas giants?
hydrogen and helium
The point in the moon’s orbit at which it is closest to the Earth
perigee
The moon after the new moon and before the full moon, when its appearance is growing
Waxing moon
The time it takes a planet to orbit the sun is directly related to its distance from the sun
Kepler's 3rd Law
What does gravity have to do with planetary orbits?
It keeps the planets from traveling indefinitely into space
Why is there an equatorial bulge to Jupiter and Saturn?
The planets are spinning so fast on their axis, that the equator bulges out and their poles flatten
True/False: Erosion changes the moon’s surface dramatically from week to week.
False; the moon does not have weather, so it does not experience erosion
What created the moon's craters?
meteorite impacts