Earth, Moon, and Sun
The Big Bang
The Moon
Galaxies and Planets
Comets, Meteoroids, Asteroids
100
The line passing through Earth's center and poles?
What is Earth's axis?
100
The Big Bang is said to have caused this?
What is the creation of the universe?
100
This phase of the moon is completely illuminated.
What is a full moon?
100
The planet that is the closest to our sun.
What is Mercury?
100
A meteoroid that has entered Earth's atmosphere.
What is a meteor?
200
The path of Earth as it revolves round the sun?
What is orbit?
200
When as the galaxies move, the light waves they emit become more spread apart?
What is the Doppler Effect?
200
When the moon is completely dark?
What is a new moon?
200
The planet that is farthest from the sun.
What is Neptune?
200
Small chunks of rock in space.
What is an asteroid?
300
When the sun is farthest north or south of the equator?
What is equinox?
300
The single point in space in which before the Big Bang, all matter was compressed into?
What is the singularity?
300
What other astronomical object, along with the moon, causes Earth's tides?
What is the sun?
300
The planet that has the shortest day.
What is Jupiter?
300
A famous comet that returns to Earth's view approximately every 76 years.
What is Halley's Comet?
400
The movement of Earth around the sun?
What is rotation?
400
When the light from faraway galaxies appear more red than usual?
What is red shift?
400
The amount of the surface of the moon that is illuminated during the first-quarter phase?
What is nearly one-half?
400
This former planet was reclassified in 2006 as a "dwarf planet".
What is Pluto?
400
The largest discovered asteroid.
What is Ceres?
500
When the noon sun is directly overhead at the equator?
What is solstice?
500
Hydrogen combined with tritium?
How did helium form shortly after the big bang?
500
The number of days in the cycle of the moon phases?
What is 29.5?
500
This galaxy is nearest to the Milky Way and will someday collide with it?
What is Andromeda?
500
This is the name for a meteor after it has collided with Earth's surface.
What is a meteorite?
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