Planets
What is the shape of the planets' orbits?
Elliptical shape
What is the order of the planets? (including the asteroid belt and the kuiper belt)
Mercury, Venus, Earth, mars, Asteroid Belt, Jupiter, Saturn, Uranus, Neptune, and Kuiper Belt
Why did the girl bring a ladder to school?
She wanted to go to high school
What makes a day on a planet?
Rotation
What are the characteristics of the terrestrial planets?
1. Small
2. Rocky
3. Few moons
4. Metallic core
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Why is Venus so hot?
Because it has a thick atmosphere that leads to increased greenhouse effect that traps heat
What makes a year on a planet?
Revolution
What are the characteristics of the gas giants?
1. Rings
2. Many moons
3. Metallic core
4. Icy crust
5. Outer layer of hydrogen and helium
Models of the universe
Ptolemy vs Copernicus
Ptolomy: Earth was the center of the universe
Copernicus: Sun was center of the universe
Uranus is different because it rotates on its side
What effects gravitational force and how?
Gravity is affected by mass and distance because if you increase mass you increase gravity. And if the distance is larger then gravity goes down.
What is the biggest planet and the smallest planet?
Biggest: JUPITER
Smallest: MERCURY
What is the difference between rotation and revolution?
Rotation: is around the axis (one day)
Revolution: Is around the sun (one year)
Why are Neptune and Uranus considered twins?
1. Blue
2. Mass
3. Rotation
4. Gas Giants
What are Saturn's rings made of?
Ice and Rock
What is Mars revolution and rotation?
Revolution: 686.93 Earth days
Rotation: 24.6 hours
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Why do we think about colonizing Mars and not Venus?
1. Venus is the hottest planet (bad idea to live there)
2. Mars has polar caps of water ice
3. Venus has no visible light
What are the 2 reasons that we remain in orbit around the sun?
1. Law of Inertia: Tendency of an object to resist change in motion ("Objects in motion tend to stay in motion unless acted on by an outside force")
2. Gravity: Force of attraction between objects that is due to their masses and distance