Question 1

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What is at the center of our solar system?

Question 2

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the sun

Question 3

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How many major planets are there in the solar system?

Question 4

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eight

Question 5

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What are examples of celestial bodies?

Question 6

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planets, moons, dwarf planets, cosmic dust, asteroids, comets, and meteroids

Question 7

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What is the sun?

Question 8

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The sun is a medium sized yellow star.

Question 9

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How do the planets orbit the sun? In what order?

Question 10

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Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune

Question 11

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What are three examples of dwarf planets?

Question 12

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Pluto, Ceres, and Eris

Question 13

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How many moons are included in our solar system?

Question 14

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almost 200

Question 15

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What is the solar system?

Question 16

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the collection of planets (including Earth), moons, asteroids, and other celestial bodies that orbit the sun.

Question 17

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What is the third planet from the sun?

Question 18

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Earth

Question 19

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What of these is NOT part of the solar system?

Question 20

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the sun

Question 21

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eight planets

Question 22

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Milky Way galaxy

Question 23

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asteroids

Question 24

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The milky way galaxy

Question 25

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What is the relationship between the sun and the eight major planets?

Question 26

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The eight planets orbit the sun.

Question 27

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How is the Milky Way Galaxy different from the solar system?

Question 28

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The solar system is a very small part of the Milky Way, which is made up of billions of stars

Question 29

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About how many stars exist in our Milky Way?

Question 30

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200 billion

Question 31

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Why does the sun appear to be the largest star in the sky?

Question 32

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It is the closest star to Earth

Question 33

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What is the largest object in the solar system?

Question 34

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the sun, more than 1.3 million Earths could fit inside of it!

Question 35

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How far is Earth from the sun?

Question 36

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93 million miles away (about 150 million kilometers)

Question 37

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What are the terrestrial planets?

Question 38

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Mercury, Venus, Earth, Mars

Question 39

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What do terrestrial planets all have?

Question 40

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hard, rocky surfaces, dense, and have solid cores with relatively thin atmospheres and relatively small diameters with few or no moons.

Question 41

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What are the four outer planets called?

Question 42

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Jovian planets or gas giants

Question 43

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How are Jovian planets different from terrestrial planets?

Question 44

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Jovian planets are cold, much larger, they are made of gases and liquids (not water), they have no real surface to stand on, with very small cores, and they all have rings similar to Saturn, and they all have moons

Question 45

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From what you have learned so far, which do you think came first, the Milky Way Galaxy or the sun and our solar system? Why?

Question 46

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The Milky Way because as the dust and gas in the Milky Way became denser, after a long time, stars began to form from the material in the galaxy.

Question 47

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What are the four Jovian planets and why are they called "Jovian"?

Question 48

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Jupiter, Saturn, Uranus, and Neptune, because they all resemble Jupiter

Question 49

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What is the largest planet in the solar system? It is 10 times larger than Earth.

Question 50

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Jupiter

Question 51

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Why was Pluto dropped from the list of major planets?

Question 52

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Scientists discovered another body very similar to Pluto and instead of expanding the solar system from 9 planets, scientists created a new classification, dwarf planets.

Question 53

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What is the IAU?

Question 54

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The International Astronomical Union is the official body that sets definitions and verifies identifications for planetary science.

Question 55

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What is a dwarf planet?

Question 56

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A celestial body that orbits the sun, has enough mass to give it a round shape, is not a moon orbiting another planet, but has NOT cleared a path through the region around its orbit.

Question 57

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How many dwarf planets does the IAU recognize?

Question 58

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5

Question 59

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List 3 characteristics of Jovian planets.

Question 60

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no solid surface; thick, dense atmosphere; many moons

Question 61

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What is the main difference between a dwarf planet and a major planet?

Question 62

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Dwarf planets have not cleared other bodies out of their orbital paths.

Question 63

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What kinds of objects are smaller than dwarf planets?

Question 64

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Asteroids, comets, and meteoroids, but far more numerous

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