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Today

Today. Hand in any work needed. Get out a small piece of paper, PUT YOUR NAME ON IT. When bell rings the quiz will start and you will have 1 minute per question to answer. Question 1. What are the dark spots on the moon called?. Question 2.

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Today

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  1. Today • Hand in any work needed. • Get out a small piece of paper, PUT YOUR NAME ON IT. • When bell rings the quiz will start and you will have 1 minute per question to answer.

  2. Question 1 • What are the dark spots on the moon called?

  3. Question 2 • List the waxing phases in order from New to full • OR • Draw the phases

  4. Question 3 • What causes the tides?

  5. Question 4 • Draw a solar eclipse • (include all three objects involved) • Do not draw a dark circle!!

  6. Mini Quiz • What are the dark spots on the moon called? • Mare • List the waxing phases in order from New • New, Crescent, 1st 1/4 , Gibbous, Full • What causes the tides? • The moons gravity and the Earth’s • Draw a solar eclipse

  7. Planets and orbits

  8. Vocabulary • Eccentricity • Planet • Terrestrial Planet • Jovian Planet

  9. Eccentricity • How do planets stay in their orbit? • Gravity • Eccentricity is the shape of the orbit, measurement of how flat a circle is.

  10. Open to page 15 • Also open your ESRT to the cover. • Find the Formula for the eccentricity. • Use your ruler on your cover of the ESRT to measure and lets find the eccentricity. 5 10

  11. Eccentricity • Minimum eccentricity • Circle has an eccentricity of 0 0/5=0.000 • Maximum eccentricity • Line has an eccentricity of 1 5/5=1.000 • ALL ECCENTRICITY VALUES HAVE 3 DECIMALS!!!

  12. Orbits around the sun • Planets will go fastest when it is near the Sun! • WHY????

  13. The Solar System • ~4.5 billion years old • Planets (Large object that is rounded from its own gravity that orbits a central star) • Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune • Pluto (not a planet anymore) • Asteroids, Meteors and Comets

  14. Planets • Terrestrial • Small and Rocky • Venus, Mercury Earth and Mars • Close to the Sun • Jovian • Large & Gaseous • Jupiter, Saturn, Uranus & Neptune • Far from Sun ESRT can help greatly!!

  15. ESRT pg 15

  16. And what about Pluto? • It is small and rocky like a terrestrial, but out by Jovian? • Orbit is erratic • Smaller than all other planets including our moon! Can fit it into US! A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighborhood around its orbit A celestial object that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, (c) has not cleared the neighborhood around its orbit, and (d) is not a satellite .

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