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How big do you think our Solar System is compared to the Universe? On the 5th of September 1977, NASA launched Voyager 1. In August 2013, Voyager 1 left the Solar System. It took 36 years, with Voyager 1 travelling at a speed of nearly 36 000 miles in one hour. On the 12th of September 2013 Voyager was 11.6 billion miles from the Earth. http://scaleofuniverse.com/ How far away? How far are each of these objects from the Earth? Can you put them in order of distance, starting with the Earth at the centre? Moon Proxima Centauri (a star) Andromeda (a galaxy) Neptune Sun How far away? How far are each of these objects from the Earth? Can you put them in order of distance, starting with the Earth at the centre? Moon = 384 000 km Sun = 150 000 000 km Neptune = 4 500 000 000 km Proxima Centauri =4.0 x 1013 km (4.3 ly) Andromeda = 2.5 x 1019 km (2.5 million ly) The Solar System Success Criteria Today you will: Know some objects in the Solar System Understand the similarities and differences between the planets in the Solar System Be able to explain why it is difficult to make scale models of the Solar System What is in the Solar System? What is in the Solar System? What is in the Solar System? How can we remember…? M–V–E–M–J–S–U–N https://www.youtube.com/watch?v=3b2twHNy9L8 What is in the Solar System? The Solar System Success Criteria Today you will: Know some objects in the Solar System Understand the similarities and differences between the planets in the Solar System Be able to explain why it is difficult to make scale models of the Solar System What are the planets like? The planets can be divided into two groups: • Rocky inner planets • Gas giants How do you think these planets might be similar and how might they be different? What are the planets like? Solar System Top Trumps Round 1: Which has the BIGGEST DIAMETER? Round 2: Which has the TEMPERATURE CLOSEST TO EARTH’S TEMPERATURE? Round 3: Which has the HIGHEST ORBITAL SPEED? Round 4: Which has the HIGHEST MASS? Round 5: Which has the EARLIEST YEAR OF DISCOVERY? The Solar System Success Criteria Today you will: Know some objects in the Solar System Understand the similarities and differences between the planets in the Solar System Be able to explain why it is difficult to make scale models of the Solar System Scale of the Solar System Can you fit the whole Solar System onto one strip of paper? 1. Fold your strip of paper into three equal sections. 2. Write ‘Sun’ at the top, ‘Saturn’ at the first fold, ‘Uranus’ at the second fold, and ‘Neptune’ at the bottom. 3. Fold the top of the page (Sun) to the first fold (Saturn). Label the new fold ‘Jupiter’. 4. Fold the top of the page (Sun) and the new fold (Jupiter) into three equal sections. 5. Label the fold closest to the Sun as ‘Mars’. 6. Write the remaining planets equally spaced between the Sun and Mars. These planets are Mercury, Venus, and Earth. https://www.youtube.com/watch?v=97Ob0xR0Ut8 The Solar System Success Criteria Today you will: Know some objects in the Solar System Understand the similarities and differences between the planets in the Solar System Be able to explain why it is difficult to make scale models of the Solar System Our Solar System Our solar system has ______ planets and Earth thousands of ___________, which are small eight lumps of rock found between _________ and Mars Jupiter. reflect All the planets and asteroids _______ around orbit the Sun. The Sun is a ______ so it produces its star own _______. We can only see planets when light they _________ light from the Sun. asteroids One of Four What is the closest planet to the Sun? Jupiter The Earth Mercury Saturn What is the closest planet to the Sun? Jupiter The Earth Mercury Saturn Which is the largest planet? Jupiter The Earth Mercury Saturn Which is the largest planet? Jupiter The Earth Mercury Saturn Which of the following planets is our next door neighbour? The Moon Mercury Venus Neptune Which of the following planets is our next door neighbour? The Moon Mercury Venus Neptune Put the following in order of size (smallest first): a.Galaxy b.Planet c.Star d.Universe abcd bcad dcba cdba Put the following in order of size (smallest first): a.Galaxy b.Planet c.Star d.Universe abcd bcad dcba cdba Identify the planet: Earth Mars Pluto Saturn Identify the planet: Earth Mars Pluto Saturn Identify the planet: Pluto Mercury Uranus Neptune Identify the planet: Pluto Mercury Uranus Neptune How long does it take the Earth to orbit the Sun? 1 month 1 day 3 months I year How long does it take the Earth to orbit the Sun? 1 month 1 day 3 months 1 year How long does it take for the Earth to rotate once on it’s axis? 1 Hour 12 Hours 24 Hours 1 Year How long does it take for the Earth to rotate once on it’s axis? 1 Hour 12 Hours 24 Hours 1 Year Which planet has the greatest gravitational pull? Jupiter Mars Earth Pluto Which planet has the greatest gravitational pull? Jupiter Mars Earth Pluto