This planet is the "3'rd rock from the sun". It has a large amount of water on its surface and is the only planet that currently has conditions which sustain life as we know it.
What is Earth?
100
These are dark areas on the sun's surface.
What is sunspots?
100
Asteroids are small Solar System bodies that orbit this.
What is the sun?
100
This is the term used to describe a group of billions of stars.
What is a galaxy?
100
This is a non-contact force that acts on objects. If two objects are placed in space, they will be drawn towards each other by this force.
What is gravity?
200
Small and recently re-classified as a dwarf planet, this is the littlest planet found furthest out in our solar system.
What is Pluto?
200
The sun, and all bodies that orbit around it form this.
What is solar system?
200
Comets are made of these things.
What is ice, dust, and small rocky particles.
200
List the following objects in space in order from largest to smallest: star, planet, galaxy, universe.
What is universe, galaxy, star, planet?
200
A meteoroid that burns up as it passes through the Earth’s atmosphere.
What is a meteor.
300
This is the largest planet in the solar system.
What is Jupiter?
300
All objects in the solar system travel around the sun in this kind of orbit that is not circular, but more oval shaped.
What is elliptical orbit?
300
Asteroids are made of this.
What is rock and metal?
300
If a star is 300 light-years from Earth, how long does it take light from that star to reach Earth?
What is 300 years?
300
In this process, the nuclei of atoms fuse together to form a larger nucleus.
What is nuclear fusion?
400
This is known as the red planet, and has shown evidence that it may have had microscopic life on it long ago.
What is Mars?
400
This is the innermost part of the sun where it's energy is generated.
What is the core?
400
This is a celestial object that produces a glow of ice melting off into vapor when close to a star.
What is the tail of a comet?
400
This term is used to describe a star that has several smaller bodies orbiting it.
What is solar system?
400
An object that keeps moving with the same speed and direction is this.
What is inertia?
500
This is the 8th planet from the Sun, and is made of mostly hyrdrogen, helium, and methane gas.
What is Neptune?
500
The sun's rays strike Earth most directly along here.
What is the equator?
500
The asteroid Belt is located here.
What is the area that lies roughly between the orbits of Mars and Jupiter in the Solar System.
500
If a star has similar sizes and surface temperatures as our sun, we can conclude this about that star.
What is a medium sized star like the sun or a main sequence star.
500
This comet can be seen with the naked eye from Earth every 75 to 76 years.