Lesson 1: Brightness
What star is at the center of our solar system?
The sun
Mercury, Venus, Earth and Mars
Name the four outer planets.
Jupiter, Saturn Uranus, Neptune
What are the outer planets often called?
Gas Giants
What are asteroids mostly made of?
rock
Why does the sun look brighter than other stars?
Because it is closer to Earth
Why are Mercury, Venus, Earth and Mars called inner planets?
They are closest to the sun.
Which planet is the largest in the solar system?
Jupiter
Why are outer planets called gas giants?
They have thick atmospheres made of gas.
Where are many astroids found?
Between Mars and Jupiter
What does apparent brightness mean?
How bright a star looks from Earth
What are inner planets mostly made of?
Rock (rocky/solid surfaces)
Which planet is the farthest from the sun?
Neptune
false
What are comets made of?
Ice, dust and rock
Name one factor that affects how bright a star looks.
Distance OR how bright the star really is
What number planet from the sun is earth?
third
Which planet has rings made of ice, dust, and rock?
Saturn
Name one characteristic of gas giants
large size, many moons, rings, thick gas atmosphere
What happens when a comet gets close to the sun?
It forms a trail
True or False: A farther star can look dimmer than a closer star even if it is brighter
True
Which inner planets have moons?
Earth and Mars
Which outer planet takes more than 100 Earth years to orbit the sun?
Neptune
Which two gas giants look blue because of methane?
Uranus and Neptune
What is one difference between an asteroid and a comet?
Comets form trails and asteroids do not, OR they are made of different materials