Distances
Law that determines the relative distances of the planets
What is Kepler's 3rd law?
The light of a comets comes from here
What is the sun?
Meteors and meteoroids are made of this
What is rock?
Double points for specifying iron and nickel!
Asteroids are this large
What is between 100m and 1,000 km?
The planets orbit in ______ direction as the Sun's rotation on its axis
What is the same?
You need these to determine the density of a planet
What are mass and volume?
What is away from the sun?
The difference between a meteor and a meteoroid
What is location?
(One is in the atmosphere and one is on the ground is also acceptable)
Asteroids are made of this
What is carbon, iron, and other rock?
Most planets orbit on their axes _____ direction as the sun
What is the same?
Variables needed for the diameter of a planet
What are angular size and distance?
Comets are about this large
What is a few km?
Most meteor showers are caused by this
What is Earth passing through comet debris?
Where is the asteroid belt?
What is between Mars and Jupiter?
A planets moons orbit _____ direction as the planet's rotation
What is in the same?
5 characteristics of terrestrial planets
Close to Sun
Small masses, radii
Rocky, solid surfaces
High densities
Slow rotation
Weak magnetic fields
No rings
Few moons
Comets are made of these substances
What are dust, rock, methane, ammonia, and ice?
Meteors on average are approximately this old
What is 4.5 billion years?
Three reasons asteroids never became planets
What is too little mass, different chemical compositions, and Jupiter's gravity?
This body does NOT orbit in the ecliptic plane
What is comets?
Number of moons of Neptune OR Pluto
What is 14? OR What is 5?
Short period comets likely originate from here AND Long period comets likely originate from here
What is the Kuiper belt AND What is the Oort cloud?
The meteoroid in Winslow, AZ weighed approximately this much
What is 200,000 tons?
About this many asteroids have orbits that cross Earth's path
What is 12,000?
The apparent path of the Sun in the celestial sphere, resulting from Earth's orbit around the Sun
What is the ecliptic plane?