Early Astronomers
Telescopes and Astronomy
Stars
Galaxies and universe
Planetary Motion
100
This Greek Astronomer was the most popular astronomer for close to 1500 years.
Who was Ptolemy.
100
This is the time it takes for the moon to revolve around the Earth once.
What is a month.
100
This color of star is the hottest.
What is blue.
100
This type of galaxy has a bulge at the center and spiral arms.
What is Spiral galaxy.
100
This is the path that a body follows as it travels around another body in space.
What is orbit.
200
This Polish astronomer published a new theory that was sun centered, but his theory did not replace the Ptolemaic theory immediately.
Who was Copernicus.
200
In the 1920's, this astronomer discovered that there was more to the universe than just our galaxy.
Edwin Hubble
200
This is how we classify stars.
By their temperature.
200
This type of galaxy has no distinct shape.
What is an irregular galaxy.
200
Of Kepler's laws, this law states that planets travel in an ellipse.
What is the 1st law of planetary motion.
300
When Copernicus' Theory was accepted, major changes in society and science took place. What is this time frame called?
Copernican Revolution
300
This type of telescope uses mirrors to gather light.
What is a reflecting telescope.
300
This consists of millions of colors, including red, orange, yellow, green, blue, indigo, and violet.
What is the spectrum.
300
This is the latin word for "cloud."
What is nebula
300
Of Kepler's laws, this law states that a planet further away from the sun will take longer to orbit the sun.
What is Kepler's 3rd law.
400
This astronomer is responsible for the Laws of planetary motion.
Who was Kepler.
400
This is the time required for the Earth to rotate once on its axis.
What is a day.
400
This is how bright stars look, or appear to be.
What is apparent magnitude.
400
This is the theory that the universe formed with a huge explosion.
What is the big bang theory.
400
The gravitational force between two objects depends on these 2 things.
Mass of an object and the distance between the two objects.
500
This astronomer went blind in one eye due to looking at the sun through a telescope.
Galileo
500
This type of telescope uses lenses to gather light.
What is refracting telescope.
500
This is the actual brightness of a star.
What is absolute magnitude.
500
Cosmologist use this model to explain the movement of galaxies in the universe.
What is the Raisin-Bread Model.
500
What keeps the moon in orbit around the Earth?
Gravity and inertia
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