Show:
Lesson 1
Lesson 2
Lesson 3
Lesson 4
Lesson 5
100
The study of the universe.
What is astronomy?
100
A bowl shaped depression on the Moon's surface
What is a crater
100
Consists of a star, such as the Sun, as well as all the planets, moons, and other bodies traveling around it
What is a solar system
100
A group of stars that appear to form a pattern
What is a constellation
100
A group of star clusters held together by gravity
What is a galaxy
200
A vertical belt 15 degrees wide in longitude in which all locations have the same
What is a standard time zone?
200
The shape of the Moon we see in the night sky
What is a phase of the Moon
200
The tendency of a moving object to stay in motion
What is inertia
200
The apparent shift in an object's position when viewed from two locations
What is parallax
300
One complete spin on an axis
What is a rotation
300
When the Earth blocks sunlight from reaching the Moon
What is a lunar eclipse
300
Rocky or metallic objects that orbit the Sun
What is an asteroid
300
The distance that light travels in a year
What is a light-year
300
The absorption lines that show as space expands
What is expansion redshift
400
On complete trip around the Sun
What is a revolution
400
When the Earth passes through the Moon's shadow
What is a solar eclipse
400
A ball of ice and rock that orbits the Sun
What is a comet
400
An exploded star
What is a supernova
400
The expansion of the universe that sent matter in all directions
What is the Big Bang
500
A line at a longitude of 180 degrees made to prevent the time change problem
What is the International Date Line
500
The regular rise and fall of the water level along a shore
What is a tide
500
Small, rocky or metallic objects that orbit the Sun in the inner and outer regions of the solar system
What is a meteoroid
500
A huge cloud of gas and dust in space
What is a nebula
500
The radiation that has been left behind by the Big Bang and gives evidence to support it
What is background radiation