Lesson 2 Flashcards
(22 cards)
What is the center of our solar system?
Sun
How many planets does our solar system have?
8
List the inner planets.
Mercury, Venus, Earth, Mars
List the outer planets.
Jupiter, Saturn, Uranus, Neptune
How are the inner planets similar?
- Less than two moons
- Close to the sun
- Rocky surfaces
- They are smaller
Why is Mars called the “Red Planet”?
It looks fiery red from earth
Why is Earth the most unusual inner planet?
- It has life
- Oxygen
- It has water
What separates the inner planets from the outer planets?
Asteroid’s belt
What makes the gas giants similar?
- Made of gas
- Huge
- They all have rings
- They have many moons
How are the gas giants different from Pluto?
- It’s small
2. It has a rocky surface
Which of the outer planets is the largest?
Jupiter
What is the great red spot on Jupiter?
A hurricane like storm
What is different about the way Uranus rotates?
On its side
How are asteroids and comets alike?
How are they different?
Alike:
They are smaller than planets
Different:
1. Comets have a tail and balls of rock, frozen gases and ice
- Asteroids are made out of rock and metal
A ball of rock, ice, and frozen gases in space is what?
Comet
A large object that moves around a star is what?
Planet
A group of objects in space that revolves around a central star is what?
Solar system
The imaginary line around which Earth spins as it rotates is what?
Axis
The different shapes that earths moon seems to have is what
Phases
Which planet has the shortest year?
Mercury
Which planet has the longest year?
Neptune
How are outer planets different from inner planets?
They have rings and they are huge.
