The process in the Sun's core when hydrogen combines together to form helium producing heat energy and light
What is nuclear fusion
100
Unit of measurement to find distances within the solar system
What is the astronomical unit
100
A cloud of dust and gas that begins to gather before a star is created.
What is a Nebula
100
The 8 different appearances that the Moon cycles through in one month's time
What are phases
100
The method that astronomers use to measure the relative distance stars are from Earth; the apparent shift in position of an object due to a change in the observers position
What is parallax
200
A darker, cooler area on the sun's surface
What is a sunspot
200
The first four planets in the solar system are collectively known as this (otherwise known as the terrestrial planets)
What are the inner planets
200
An adult star that when plotted on the H-R Diagram graph fits into a band that diagonals from upper left to lower right
What is main sequence star
200
When the Moon appears to get bigger night after night
What is waxing
200
A piece of rock circling the Sun in between the orbit of Mars and Jupiter
What is an Asteroid
300
A giant storm on the sun's surface that sends out huge streams of charged particles into the solar system
What is solar flare
300
The planet known as the "red planet"
What is Mars
300
This determines how a star lives its life.
What is Mass/Size
300
The most current theory for the origin of the Moon
What is the Impact Theory
300
Also known as a "dirty snowball", this object circling the solar system can have two tails (dust and ion)
What is a Comet
400
The center of the sun, where the sun's energy is produced
What is the core
400
The planet with the "great red spot"
What is Jupiter
400
When a star runs out of its hydrogen fuel it will expand outward to form this stage.
What is a giant (Red Giant, Supergiant).
400
The phase when the Moon is between the Earth and Sun, when the lit half is facing the Sun and is not seen from Earth
What is a New Moon
400
When a meteoroid is large enough not to burn up in the atmosphere and strikes the Earth's surface
What is a meteorite
500
The visible surface of the sun
What is the photosphere
500
The out planet that is tipped on its side
What is Uranus
500
The result of a supernova explosion and collapse, when gravity can become so great that not even light can escape .
What is a Blackhole
500
The event that happens when the earth casts a shadow across the Moon
(The Umbra is the dark inner part of the Shadow; the Penumbra is the lighter, outer portion of the shadow)
What is a Lunar Eclipse
500
When electrical discharges from the Sun reach Earth, they generate this display of light at Earth's poles