Vocabulary
A small piece of ice, rock, or metal that has broken off a comet or asteroid.
meteor
Why can we see the Sun?
Because we revolve around it.
A tool that makes far objects appear bigger and nearer.
telescope
Our solar system is in a group of stars called the
Milky Way
We see different stars in summer and winter because Earth _______ around the Sun.
Revolves
The Sun, the planets, and other objects.
Solar System
What makes up the solar system?
What did people believe about the solar system before Copernicus?
The Sun revolved around the Earth.
The closest star to Earth is the _____.
Sun
Why can't we see other stars during the daytime?
The Sun's light makes it too bright to see other stars.
A group of stars that forms a picture
Constellation
Name the four inner planets.
Mercury, Venus, Earth and Mars
Which scientist confirmed that the Earth revolves around the Sun using his telescope?
Galileo
Why do stars appear to move across the night sky?
Because the Earth is rotating.
A meteor that hits Earth is called a
meteorite
A chunk of ice mixed with rocks and dust moving through space.
comet
Name the four outer planets
Jupiter, Saturn, Uranus, Neptune
A telescope that takes in radio waves is called a _______.
Radio telescope
Then a computer takes in the data and turns it into pictures.
List two ways that constellations helped people.
They used them to tell time. Farmers used them to tell the seasons. Sailors could tell direction by the positions of stars.
_____ is called the "sideways" planet because it turns on its side.
Uranus
A large piece of rock or metal in space.
asteroid
How does a meteor form?
small pieces of ice, rock, or metal that break off of a comet or asteroid
A piece of clear material can change the path of light.
lens
We face Orion during the day in summer. Why is it not visible?
The Sun blocks our view of Orion. However, we can see Orion in the winter.
_____ is the hottest planet.
Venus