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Planets
Other Objects in Space
Stars
Studying the Stars
More Astronomy
100
The modern solar system made by Kepler has this in the center.
What is the sun?
100
A rocky body that orbits the sun like a planet.
What is an asteroid?
100
The sun's size compared to other stars.
What is average sized star?
100
The process of bending light.
What is refracting?
100
The process of bouncing light to form a clear image.
What is reflecting?
200
Oval-shaped, like a flattened circle
What is elliptical?
200
This causes the ocean tides on earth.
What is the moon's gravity?
200
The bigger and hotter the star is, the more it does this.
What is give off light?
200
This tool separates light into color bands and dark lines.
What is a spectroscope?
200
Telescopes can be carried to space by these.
What are rockets?
300
Because planets appeared to move from one group of stars to another, the Greeks called the planets this.
What are wanderers?
300
The asteroid belt is between these two planets.
What is Mars and Jupiter?
300
This surrounds the star's surface.
What is the corona?
300
The air around the Earth that can often cause images from telescopes to become blurry.
What is the atmosphere?
300
Stars that seem to be grouped together.
What is a constellation?
400
We measure the average distance of planets using this unit.
What are astronomical units?
400
Name three objects other than planets that orbit the sun.
What are comets, asteroids, and meteoroids?
400
The distance light travels in one year is known as this AND in kilometers is this.
What is a light year and travels 9,500,000,000, 000?
400
Lenses and mirrors in telescopes do this.
What is focus light and magnify images?
400
Hundreds and billions of stars in a cluster.
What is a galaxy?
500
Which two scientists had the planets orbiting in a circle in their solar system model?
Who are Copernicus and Ptolemy?
500
Name three ways the sun effects the earth.
What is provides light and heat, keeps Earth in its orbit, affects ocean tides, too?
500
Name three properties of stars.
What is its size, its brightness, and its color?
500
The reason why scientists use light years to measure the distances of stars.
What is kilometers and astronomical units are to small?
500
The reason why stars glow.
What are nuclear reactions inside the core of the star giving off large amounts of heat and light.