The Earth's orbit around the sun lasts this long.
What is one year (or 365 1/4 days)?
How many planets are in our solar system?
What is eight?
Without this, the Earth would not experience seasons.
What is the tilt of Earth's axis?
This is a frozen mass of different types of ice and dust orbiting the Sun.
What is a comet?
This force keeps the planets and moons in their orbits.
What is gravity?
How long does it take the Earth to make one complete rotation on its axis?
What is one day or 24 hours?
Name the four inner planets.
What are Mercury, Venus, Earth and Mars?
When part of the Earth is tilted closer to the sun, that part of the world experiences this season.
What is summer?
This rocky object is larger than most other types of space debris, and revolves around the sun.
What is an asteroid?
The reason the moon appears to be lit up in the sky.
What is the reflection of the Sun's light?
The effect of the Earth rotating on its axis.
What causes day and night?
Name the four outer planets.
What are Jupiter, Saturn, Uranus, and Neptune?
When part of the Earth is tilted away from the sun, that part of the world experiences this season.
What is winter?
This rocky object is smaller than an asteroid.
What is a meteoroid?
The name of the competition between the Soviet Union and the United States.
What is the Space Race?
What is the scientific word for Earth's orbit around the sun?
What is "revolution"?
What we call a planet that is smaller than a regular planet.
What is a dwarf planet?
If the northern hemisphere is experiencing winter, the southern hemisphere is experiencing this season.
What is summer?
This is a piece of a meteor that lands on Earth.
What is a meteorite?
The first man in space.
Who is Yuri Gagarin?
The number of orbits Juan has experienced in his lifetime if he is 11 years old.
What is 11?
Only the outer planets have this unique feature.
What are rings?
What we call the time of year when day and night are of equal length.
What is an equinox?
This is the galaxy in which our solar system resides.
What is the Milky Way?
Spacecraft that gather data without a crew.
What are space probes?