the earth's angle of rotation, the angle the Earth rotates at
What is 23.5 degrees?
100
this element makes up most of stars, and the universe for that matter
What is Hydrogen?
100
arguably the greatest scientist of all time, discovered gravity, invented calculus, and even his own line of cookies
Who is Sir Isaac Newton?
100
these are chunks of rock that float around space, could be the size of your car or this building
What are asteroids?
200
the moon passes into the Earth's shadow
What is a lunar eclipse?
200
from earth, planets sometimes appear to reverse their orbit, which we call this
What is retrograde motion?
200
what we call the increasing wavelength of the light given off by a star that is traveling away from us
What is a redshift?
200
created three laws that describe planetary motion
Who is Johannes Kepler?
200
the largest planet in our solar system
What is Jupiter?
300
a model of the solar system with the Earth at the center, created by Ptolemy
What is the geocentric model?
300
a day that their is equal durations of daytime and nighttime
What is an equinox?
300
on average, the sun's rays hit along this location on the earth with the highest intensity
What is the Equator?
300
this man invented the telescope, discovered Jupiter's four largest moons, and was placed under house arrest until his death by the Catholic Church after proving the heliocentric model
Who is Galileo Galilei?
300
this planet is covered in a dense cloud of sulfur, has phases that we can see, and revolves faster than Earth does
What is Venus?
400
the shape in which all planets orbit their star
What is an ellipse?
400
this phenomenon is caused by the Earth's rotation, also is the reason that hurricanes rotate
What is the Coriolis Effect?
400
the classification of the sun as a star
What is a medium yellow main sequence star?
400
If Santa lived on the Tropic of Cancer (23.5 degrees north), what day would the sun be directly overhead at high noon?
What is June 20 (the summer solstice)?
400
the Asteroid Belt is in between these two planets
What are Mars and Jupiter?
500
this diagram, found in your reference table, can tell you about the luminosity, size, and temperature of stars, among other things
What is the Hertzsprung-Russel (HR) diagram?
500
this planet revolves around the sun at the slowest speed, as per Kepler's laws
What is Neptune?
500
these celestial bodies are composed of hundreds of thousands of stars, and come in different shapes and sizes
What is a galaxy?
500
how old you would be if you were the same age as the Earth
What is 4.6 billion years?
500
this is the closest galaxy to our own, and is one of the only galaxies that is moving toward us (as a matter of fact, it will collide with the Milky way eventually)