The Sun
The Moon
The Planets
Space Objects
This and That
100
This occurs when the Moon lies directly between Earth and the Sun.
What is a solar eclipse?
100
One complete change of the moon phases.
What is a lunar cycle?
100
What are the four rocky planets?
Mercury, Venus, Earth, Mars
100
Metallic, rocky bodies without atmospheres that orbit the Sun.
What is an asteroid?
100
This equals the distance that a beam of light travels through space in one year.
What is a light year?
200
This is a region on the Sun's surface that is cooler than the surrounding areas.
What is a sunspot?
200
This occurs when Earth lies between the Sun and the Moon (although not exactly between).
What is the full moon?
200
Jupiter, Saturn, Uranus, Neptune
What is the gaseous planets?
200
This are similar to planets: they orbit the Sun and; have a roughly spherical shape. However they have an unusual orbit.
What is a dwarf planet?
200
The longest period of daylight or night in a year.
What is a solstice?
300
This is a large, low energy, curved, bright stream of particles.
What is a solar prominence?
300
This occurs when Earth blocks out the Sun's light shining on the Moon.
What is a lunar eclipse?
300
This is the largest planet.
What is Jupiter?
300
A meteor that does not burn up completely and that strikes the Earth's surface.
What is a meteorite?
300
One complete orbit of Earth around the Sun.
What is a revolution?
400
This is a high energy massive explosion on the surface of the Sun.
What is a solar flare?
400
Any object that orbits a planet.
What is a satellite?
400
This gives Uranus and Neptune their bluish colour.
What is methane?
400
A celestial object made of ice and dust.
What is a comet?
400
This occurs when the hours of daylight and the hours of night are of equal length.
What is an equinox?
500
This is an extremely powerful kind of flare, where large amounts of plasma are thrown into space. This is one of the factors that causes the aurora borealis and aurora australis.
What is a coronal mass ejection?
500
What is one way (theory) that scientists believe how the Moon was created?
The Earth was struck by a large object; the metal core at the centre of the large object plunged deep into Earth, where it merged with the Earth's core; the rocky crusts of Earth and the object mixed; the larger object cooled to form Earth and the smaller object blasted from Earth; it was trapped by the Earth's gravitational force; eventually compacted to become the Moon
500
This lies between the rocky planets and the gaseous planets.
What is the asteroid belt?
500
These are a small pieces of rock or metal that travel throughout the solar system with no fixed path.
What is a meteoroid?
500
The apparent path of the Sun as it moves through the sky during the year.
What is elliptical path?
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