Show:
Ancient Astronomers
The Moon
The Earth
Planets
Miscellaneous
100
This is the word used for all Earth-centered theories of the solar system
What is geocentric
100
This length of time is both the moon's rotation and revolution period (can round off)
What is 27.3 days or one month or 27/28 days.
100
When a location is most facing the sun on a given day, the time of day is this.
What is noon?
100
Earth, Venus, Mars and Mercury are all this type of planet.
What is terrestrial?
100
This is a fancy word for the oval shape of our orbit.
What is ellipse?
200
This bold astronomer made discoveries such as sunspots with his telescope.
Who is Galileo
200
This moon phase occurs when the moon is between the Earth and the sun.
What is new
200
The daylight and nighttime are equally long on these days.
What is an equinox?
200
With planets, strong magnetism is associated with which type of motion?
What is fast rotation?
200
Gravity's strength depends on two factors, distance and this quantity.
What is mass?
300
Kepler's third law says that a planet's year gets much, much longer if this is increased
What is distance to the sun.
300
The light is on the right and is increasing during all the phases described with this word.
What is waxing?
300
On this day, your hemisphere is most aimed away from the sun and has the lowest sun altitude.
What is winter solstice?
300
Mercury has no greenhouse effect because it does not have one of these.
What is an atmosphere?
300
This group of planets and other objects orbiting the sun formed out of a swirling nebula.
What is the solar system?
400
This man came up with an Earth-centered theory that was very complicated but fairly good at predicting things.
Who is Ptolemy?
400
The moon causes neap tides during which phase or phases?
What are first and third quarters?
400
Changes in sun altitude and day length are caused by this feature of Earth's axis.
What is a our tilt?
400
Rings, many moons, and low density are characteristic of which type of planet?
What is gas giant/Jovian/outer
400
Our own collection of billions of stars, the Milky Way, is one of billions of these in the universe.
What is a galaxy?
500
This word describes the theory that was adopted because it explained more than the older geocentric theory.
What is heliocentric?
500
The eclipse that might occur at the full moon is called this.
What is a lunar eclipse?
500
Our elliptical orbit brings us closest to the sun in this season.
What is winter?
500
This man's work included the discovery that planet orbits were ellipses and that planets move faster when closer to the sun.
Who is Kepler?
500
The two ocean bulges formed by the moon add to the two bulges formed by the sun during which type of tide?
What is spring tides?