These 2 planets cannot be seen from Earth without a telescope.
What is Uranus and Neptune?
100
This man observed Venus going through phases similar to the moon.
Who is Galileo?
100
This is the layer of the sun's atmosphere that we usually see.
What is the photosphere?
100
This planet spins on its side.
What is Uranus?
100
When a meteor hits the ground, it is called this.
What is a meteorite?
200
These are the 4 inner planets.
What is terrestrial?
200
Ancient astronomers thought that all celestial objects revolved around this object.
What is the Earth?
200
When a meteoroid enters Earth's atmosphere, it produces a streak of light and is called...
What is a meteor?
200
This is the largest planet.
What is Jupiter?
200
What are the shapes of the orbits of most comets?
What is a narrow ellipse?
300
These are the 4 outer planets.
What are gas giants?
300
This man discovered Jupiter's 4 largest moons.
Who is Galileo?
300
This planet is around the same size and density as Earth.
What is Venus?
300
This is the smallest planet. (Not Pluto)
What is Mercury?
300
The asteroid belt is located between these two planets.
What is Mars and Jupiter?
400
Neptune is similar in size and color to this planet.
What is Uranus?
400
This model of the solar system is sun-centered.
What is Heliocentric?
400
This model of the solar system is Earth-centered.
What is Geocentric?
400
The Great Red Spot is...
What is a storm?
400
Meteoroids are usually created by these.
What are asteroids and comets?
500
Mars has two unusual features that could be caused by plasmas. One is a huge volcano (or mountain) which is MUCH larger than Mt. Everest. Another is...
What is the great canyon on the surface of Mars?
500
Galileo discovered 4 moons revolving around Jupiter, and this one other thing--which helped him to prove the heliocentric model.
What is Venus' phases are like the moons?
500
This planet is our neighbor that is closer to the sun.