The Moon
What causes the phases of the Moon?
The changing positions of the Moon, Earth, and Sun relative to each other.
What is the Sun primarily made of?
Hydrogen & Helium
What is the shape of the earth?
An oblate spheroid.
What is the largest planet in our solar system?
Jupiter
What is the name of our galaxy?
The Milky Way
What is the term for when the Moon completely covers the Sun?
A solar eclipse.
What process powers the Sun?
Nuclear Fusion
What is Earth's primary source of energy?
The Sun
Name the four terrestrial planets.
Mercury, Venus, Earth & Mars
What is the term for a group of stars, gas, and dust bound together by gravity?
A galaxy.
How long does it take for the Moon to orbit the Earth?
About 27.3 Days.
What layer of the Sun is visible during a total solar eclipse?
The corona.
How many continents are there on Earth?
Seven
What is the asteroid belt?
A region of space between Mars and Jupiter where most asteroids are found.
How many galaxies are estimated to exist in the universe?
Over 2 trillion.
What is the dark, flat area on the Moon called?
A mare (maria).
How long does it take sunlight to reach Earth?
About 8 minutes.
What is the name of the layer of gases surrounding Earth?
The atmosphere
What is the Kuiper Belt?
A region of the solar system beyond Neptune filled with icy bodies.
What type of galaxy is the Milky Way?
A spiral galaxy.
What is the significant effect of the Moon on Earth?
The moons gravity causes ocean tides.
What is the term for the Sun's energy output?
Luminosity
What is the term for the tilt of Earth's axis?
Axial tilt or obliquity
What is the term for a planet's path around the Sun?
An orbit.
What is the approximate size of the Milky Way galaxy?
Approximately 100,000 lightyears in diameter.