Show:
The Sun
The Planets
Comets
Small Objects
Planetary Motions
100
Part of the sun where nuclear fusion changes hydrogen into helium.
Where is the core?
100
These two rocky planets have no moons.
What are mercury and venus
100
Comets have often been described as a dirty one of these.
What is an ice ball?
100
About half of all asteroids are found between these two planets.
What are Mars and Jupiter
100
The path of one object around another object in space
What is an orbit
200
Layer of the sun that we can see from Earth.
What is the photosphere?
200
Europa, Callisto, Io, and Ganymede are the four largest of this gas giant's many moons.
What is Jupiter?
200
This is the only solid part of a comet.
What is the nucleus?
200
Tonya found one of these small rocky objects lying in a small crater on the playground at school.
What is a meteorite?
200
Kepler showed that a planet's (or other objects) movement around the sun is in this shape.
What is elliptical?
300
These magnetic disturbances on the face of the sun run in eleven year cycles and an affect the climate here on Earth.
What are sunspots?
300
Because it has no atmosphere and a very slow rotation, this planet is both one of the hottest and one of the coldest planets in our solar system.
What is Mercury?
300
This is what happens to a comet's tail as it gets closer to the sun because more of the cometary material is boiling off.
What is it gets longer.
300
These fiery little objects are often mistakenly called "shooting stars"
What is are meteors?
300
The point where a planet (or other object) is closest to the sun.
What is perihelion?
400
The only time that the sun's chromosphere and corona are visible.
What is during an eclipse?
400
A thick layer of this greenhouse gas as its atmosphere makes Venus the hottest planet.
What is carbon dioxide?
400
Place 30,000 AU beyond Pluto where most inactive comets are found.
What is the Oort Cloud?
400
This is home to Pluto and thousands of other dwarf planets.
What is the Kuiper belt?
400
This changes as a planet's distance from the sun changes.
What is what is its orbital velocity?
500
This is created when solar flares and prominences eject material into space.
What is the solar wind?
500
Because of its very slow retrograde rotation, this is the only planet in the solar system where a day takes longer than its year.
What is Venus?
500
This satellite orbiter launched "Philea", a small lander that landed on comet 67P in November 2014.
What is Rosetta?
500
This object was the largest asteroid, but now is considered a dwarf planet living in the asteroid belt.
What is Ceres?
500
Month in which Earth is at aphelion.
What is July?