What are the inner planets (Mercury, Venus, Earth, Mars)?
100
when the Earth comes between the moon and the Sun and shadow of Earth falls on the moon
What is a lunar eclipse?
100
the region of space between Mars and Jupiter
What is the asteroid belt?
200
the average distance between Earth and the Sun
What is an astronomical unit?
200
the relationship between temperature and luminosity of stars
What is as temperature increases, luminosity increases?
200
these planets are made mostly of gases with deep, massive atmospheres
What are the gas giants?
200
when the moon comes between the sun and the Earth and the shadow of the moon falls on the Earth
What is a solar eclipse?
200
small rocky body that orbits the sun
What is an asteroid?
300
the counter-clockwise rotation as seen from above the north pole of a celestial body
What is prograde rotation?
300
this theory suggests that the universe was created about 13 billion years ago in a massive explosion
What is the Big Bang Theory?
300
Name the planets in order starting from the closest to the sun.
What is: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune?
300
weak tide caused by Earth, moon, and sun being at right angles
What is a neap tide?
300
a small rocky body that travels through space; probably small pieces of asteroids
What is a meteoroid?
400
different appearances of the moon due to the relative positions of the Earth, Moon, and Sun
What are phases?
400
3 types of galaxies
What are spiral, lenticular, and irregular?
400
the amount of time it takes for a body to spin once on its axis
What is period of rotation?
400
extreme tide caused by Earth, moon, and sun aligning
What is a spring tide?
400
dirty snowball made of ice, rock, and cosmic dust that orbits the sun in an ellipse
What is a comet?
500
the clockwise spin of a planet as seen from above its north pole
What is retrograde rotation?
500
What causes Earth's seasons?
What is the tilt of Earth's axis?
500
the amount of time it takes a body to travel once around the sun
What is period of revolution?
500
Describe the current theory of our moon, Luna.
What is: a large object collided with Earth. Some of Earth's mantle was blasted into space. The pieces came together and begin to orbit the Earth, becoming the moon?
500
the bright streak of light you see as a meteoroid burns up in Earth's atmosphere