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Transcript
The Solar System 5th grade science Objectives To discover the wonders that the cosmos can unlock. Students will be able to: • Identify what can be found in the Solar System • Compare and Contrast the Sun, planets, and moons found in our Solar System. • Compare the Sun to other stars. Think we’re big? Thing again! A Quiz?!? Let’s begin by testing your knowledge! 1. How many planets are in our Solar System? A. 7 B. 8 C. 9 2. How many planets in our Solar System have rings? A. B. C. D. 1 2 3 4 Let’s see how we did! We have 8 planets in our solar system! We used to have 9 until it was decided that Pluto didn’t count! While Saturn has the brightest and most beautiful rings, all 4 gas giants have some rings around them! Jupiter, Uranus, and Neptune also have them! The First Four. The Rocky Planets Mercury, Venus, Earth, and Mars are the first four planets in our Solar System. All are solid planets but they are also very different! And now, something for completely different… The Asteroid Belt lies between the orbits of Mars and Jupiter, orbiting around the sun. The Gas Giants! After the rocky planets, we venture out to further away from the Sun where giants roam! Jupiter, Saturn, Uranus, and Neptune patrol the outer reached of our solar system! They make our rocky planets look tiny! When Mr. Clemons was your age, Pluto was a planet! Pluto used to be considered out 9th planet. Recently, scientists voted to make it a “Dwarf-Planet”. Why do you think they did that? Reasons for Pluto’s Demotion to a Dwarf-Planet: Pluto just didn’t fit in! The size of Pluto is smaller than our moon! It is so far from the sun, it’s in a region called the Kuiper Belt. That’s like the Asteroid Belt but much further away and much, much, much colder! Pluto is just a larger the normal object in the Kuiper Belt. There are other dwarf planets just like Pluto in the Kuiper Belt too! Do you agree that Pluto should be a dwarf-planet? Moons! Moons are satellites, rotating around their host planet, dwarf planet, or even asteroids. They are too small to be planets. Not all of them are round like our Moon either! The Earth has one moon. Mars has two! How many are there in our Solar System? OVER 146 MOONS!!! Astronomers have found at least 146 moons orbiting planets in our solar system. Another 27 moons are awaiting official confirmation of their discovery. This number does not include the six moons of the dwarf planets, nor does this tally include the tiny satellites that orbit some asteroids and other celestial objects (NASA.gov). Jupiter has 50 with possibly 17 more! Saturn has 53 with possibly another 9. Uranus has 27. Neptune has 13! And that doesn’t include moons of asteroids or dwarf-planets! The Sun, our own star. So how BIG is the Sun? And yet…the sun isn’t even the largest star… VY Canis Majoris is the largest star ever discovered! Mean Mr. Clemons’ Second Quiz 1. How many moons are there in the Solar System? 2. What comes after Mars? 3. What’s the smallest planet? Homework!!! Take an opportunity to show what you’ve learned about the layout of our Solar System! Draw the Solar System in order. Make sure you make them the right sizes. Please include the Asteroid Belt.