Vocabulary
A large sphere that moves around the Sun
Planet
What are the four inner planets?
Mercury, Venus, Earth and Mars
What tool would a scientist use to look at the Moon?
A telescope
Which star is closest to Earth?
the Milky Way
the Sun, planets, and other objects
Solar System
What are the four outer planets?
Jupiter, Saturn, Uranus and Neptune
What did Galileo learn about Earth with his telescope?
Earth revolves around the Sun.
True or False: Stars move.
False
_____ is the clear piece of material that affects the path of light rays (part of the telescope).
lens
a hot, glowing ball of gases
Star
Why are Mercury, Venus, Earth, and Mars the warmest planets?
Because they are closest to the Sun
What did people believe about the solar system before Copernicus?
They believed the Sun moved around the Earth.
Why do stars appear to move across the night sky?
Because Earth rotates
A small piece of ice, rock, or metal that has broken off a comet or asteroid.
meteor
A tool to make far away objects appear closer and larger
Telescope
What other objects are in our solar system? (besides the Sun and other planets)
Asteroids, comets, meteors
What kind of telescope takes in radio waves?
Radio Telescope
Why do we see different stars during different seasons?
Because Earth revolves around the Sun
A large piece of rock or metal in space.
asteroid
A group of stars that forms a picture
constellation
A meteor that hits Earth is called a ______.
meteorite
What telescope travels high above our planet in space?
the Hubble Telescope
List three ways in which constellations helped people.
They helped people tell time, seasons, and direction.
A chunk of ice mixed with rocks and dust moving through space.
Comet