Celestial Bods
The definition of a celestial body involves the following: "a _______ object that can be found in space."
Naturally
This term means the Earth is in the center of the solar system and that everything revolves around it.
Geocentric
The first gas giant of the solar system.
Jupiter
Smaller groups of stars forming patterns within constellations.
Asterism
The type of celestial body our Sun is known as.
Star
The movement of celestial bodies that is responsible for day/night cycles.
Rotation
This astronomer based his model on the apparent backward (or retrograde) movements of Mars.
Ptolemy
This category of planets are known for having shorter years.
Inner planets (or terrestrial planets)
Another common name for the constellation: Ursa Major
Big Bear
Solar Prominence
These bodies break off of asteroids and are only found out in space.
Meteoroid
Isaac Newton was to first to show that this force was responsible for keeping all celestial bodies in orbit.
Gravity
The main reason why outer planets have such low temperatures.
The asterism that is found within a certain Lion.
Sickle
Sunspots are _____ patches that are slightly ______ than the rest of the Sun's surface.
2. Cooler
The plane or imaginary line on which almost all celestial bodies move around the Sun.
Ecliptic
The apparent backwards motion of a celestial body like Mars.
Retrograde motion
The one planetary criteria that Pluto fails, thus demoting it to dwarf planet status.
Not big enough to clear its orbital path from debris
A "W" shaped asterism is found within this constellation.
Cassiopeia
One of the main functions or purposes of the Sun. A term that describes the life giving heat and light emitted from the Sun.
Solar Radiation
The only type of celestial body that does NOT move along the ecliptic plane.
Comet
Kepler's third law: The time it takes for a planet to _________ the Sun is directly related to __________ the Sun.
1. revolve around
2. how far away it is from
The hottest planet in the solar system.
Venus
(don't worry, this is a fun fact - not a quiz item!)
Ursa Minor (Little Bear is also acceptable!)
The Greek word for Sun. We have encountered it before in Chapter 10!
Helios