Solar System Test
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- What is unique about Uranus’s rotation?
- Spins on its side
- Who first purposed the geocentric model of the solar system?
- --Ptolemy
- The sun contains what percentage of the solar system’s mass?
- 99.7%
- List the planets form closest to farthest from the sun.
- Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
- Who proposed the heliocentric model of the solar system?
- Copernicus
- Name the outer planets?
- Jupiter, Saturn, Uranus, Neptune, Pluto
- Name the inner planets
- Mercury, Venus, Earth and Mars
- Which planets have one moon?
- Earth and Pluto
- Which planets have rings?
- Jupiter, Saturn, Uranus, Neptune
- Copernicus stated what three beliefs of the solar system?
-
--Heliocentric
--Earth spins on its axis
--Moon revolves around the earth - Which planets have no moons?
- Mercury and Venus
- Which planets have two moons?
- Mars
- Pluto is located in which part of the solar system?
- Kuiper Belt
- Which planets day is longer then its year?
- Venus
- In 1994 what comet slammed into Jupiter?
- Shoemaker Levi
- Why does Mercury have the widest temperature range?
- Very close to sun--during day its facing the sun so it is hot--all night facing away from sun so very cold and atmosphere traps the cold in just as it does with the heat
- Explain how the balance between the solar wind and polar gravity affected the order of gas giants?
- Harder to push away so it stayed close by--easier ones were pushed away
- What are the parts of a comet?
-
-Nucleus
-Coma
-Tail - What is the first stage in solar system formation?
- Nebula
- Why is the sky black on Mercury?
- No atmosphere--doesnt scatter light
- Copernicus concluded that the planets revolve aroudn the sun------
- retrograde motion
- Which is commonly known as a shooting star?
- meteor
- What are teh two main differences between an asteroid and a meteoroid?
- Asteroids are bigger and it orbits the sun
- Explain why Venus is the hottest planet?
- Atmosphere traps the heat
- What is the only spacecraft to visit Uranus and Neptune?
- Voyager 2
- Where do most meteoroids come from?
- Melting comets
- What is the hottest planet in the solar system?
- Venus
- What planet is named after the god of the underworld?
- Pluto
- Which planet was first to be discovered by telescope?
- Uranus
- Explain the geocentric model of the universe.
- Everything revolves around the earth
- Explain the heliocentric model fo the solar system
- Everything revolves around the sun
- What are the names of Mar's two moons?
- Phobos and Dimodes
- Give two main differences between inner and outer planets
-
-Inner planets are rock and outer are gas
-Inner have less moons and outer have more - Why do the years get longer farther away from the sun?
-
-Longer trip around the sun
-Travel at a slower speed - What two forces keep planets in motion around the sun?
-
-Inertia
-Gravity - List the three reasons why NASA is so interested in Mars?
-
-Fossilized bacteria
-Atmosphere is similar to ours
-Polar ice caps and water - What are Kepler's three laws of motion?
-
-Sun is not in the middle
-Closer the planets are the faster they orbit
-Elliptical orbit - How long does it take earth to rotate once on its axis?
- 23.56 minutes
- Which directoin does the tail of a comet pont and why?
- Away from the sun because of the solar wind
- What year will Halle's comet next visit earth?
- 2061
- What is the largest known asteroid?
- Ceres
- How close is the North Star?
- 4.24 light years
- How was the solar system formed?
-
-starts as a big ball of gas called a nebula
-gravity contracts the mass
-under so much pressure starts to burn
-once it starts to burn it pushes other materials away
-material cools and forms planet - What is a meteor?
- Meteors are rocks in the atmosphere
- What is a Meteorite?
- A meteorite is a rock that hits a planet
- What is a meteoroid?
- A Meteoroids is a mass of rock in space
- What is the distance from teh sun to the Earth?
- 150 million km
- What is the order of planets largest to smallest?
- Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury, Pluto
- Which planets have 1 moon?
- Pluto and Earth
- Which planets have 2 or more moons?
- Mars, Jupiter, Saturn, Uranus, Neptune
- Name 3 reasons why Mercury has a lot of craters
-
-no atmosphere (atmosphere burns up meteors)
-no water to make them erode
-mercury is close to sun - What causes the bands on Jupiter?
- High Winds
- What are the Spots on Planets?
- Hurricanes
- Where do comets come from?
- The Oort Cloud and the Kuiper Belt
- What is an asteroid?
- A piece of rock similar to but smaller than a planet orbiting the sun.
- Where are most asteroids found?
- In the Asteroid belt between Mars and Jupiter
- What is a comet?
- Comets- a mass of rock and dust mixed with frozen water, methane and ammonia (gas) “dirty snowballsâ€