Earth Science Rocks! Warm up March 26

1. Earth Science Rocks!Warm up March 26 • Use the table below to answer the question. • This table shows data for major characteristics of the nine planets in the solar system. • One revolution – the time to make one complete trip around the Sun • One rotation - the time • required to make one complete turn on its axis. • QUESTION: • Which of the following planets has the shortest day measured in Earth time? • A. Pluto • B. Earth • C. Jupiter • D. Mercury

2. Earth Science Rocks! MYP Unit Question: What’s out there? Area of Interaction: Human Ingenuity Learner profile: Risk Taker Standard: Explore current scientific views of the universe and how those views evolved.

3. Earth Science Rocks! Learning Target: Today I’m learning about comets, asteroids, and meteors because they are similar. Opening: Where are we located in the universe? Work Session: Notes: Comets, Meteors, Asteroids Closing: Venn Diagram

4. Our Solar System is part of the Milky Way Galaxy • Where are we located?

5. You are Here

6. Picture of the Milky Way from Earth

7. Picture of the Milky Way from Earth

8. Picture of the Milky Way from Earth

9. What else is out there? Asteroids, Meteors, and Comets

10. Asteroids • Pieces of debris left over from the formation of the solar system. • Too small to be considered a planet The asteroid Vega imaged by NASA's Dawn spacecraft

11. Asteroids • Composition: Rock fragments and metal

12. Asteroids Location: • Between Mars and Jupiter. • They orbit the sun

13. Asteroids • Characteristics: • Small, • planet-like • bodies

14. Asteroids • Examples: • The Asteroid Belt

15. Meteors, Meteoroids, Meteorites • Composition: • Pieces of rock or iron that enter Earth’s atmosphere.

16. Meteors: Any asteroid that enters Earth’s atmosphere. Meteorites: The remnants of a meteor that reach the Earth’s surface

17. Meteors, Meteoroids, Meteorites • Location: • They fall all over Earth; come from within our solar system

18. Meteors, Meteoroids, Meteorites Characteristics: Produces a streak of light Come from comets or asteroids

19. Meteors, Meteoroids, Meteorites • Examples: Leonid Meteor shower in November

20. Hoba: The World's Largest Meteorite Discovered by a Farmer Plowing His Field In 1920, a farmer was plowing a field near Grootfontein, Namibia when his plow suddenly screeched to a halt. Curious about what he had run into he dug in the soil to find a large piece of metal. The large metal mass quickly attracted the attention of scientists and others, who identified it as a meteorite and removed the soil around it. 66-ton iron meteorite - the largest single meteorite ever found and the largest piece of iron ever found near Earth's surface.

21. Campo del Cielo 2nd Largest Meteorite in the world Chaco, Argentina 37 tons

22. The Cape York Meteorite 3rd Largest Meteorite in the U.S. – 31 tons

23. Armanty, Xinjiang, China 4th Largest Meteorite in the World 28 tons

24. Willamette Meteorite Largest meteorite found in America –15 tons

25. Can you imagine watching these things hit the ground??

26. Meteor over Milwaukee, Wisconsin April 10, 2010

27. Comets • Composition: • Chunks of ice and dust

28. Comets • Location: • Orbit the sun in a long narrow ellipse. • Come from the Kuiper belt

29. Comets • Characteristics: • Millions of kilometers long. • When near the sun, a “tail” forms of gas and dust that always points away from the Sun.

30. Comets • Examples: • Halley’s Comet (every 76 years) The next one will be in 2061 • Shoemaker-Levy

31. shoemaker-levy comet

32. Comet PanSTARRSNorthern Hemisphere – March 2013 March 28, the comet sets before the moon rises at around 9:30 p.m. ( Next trip: 10,000

33. Look to the left of the moon

34. Comet Ison Heading toward the sun – November 2013. Comet ISON on the morning of December 10, 2013.

35. Compare/Contrast Asteroid, Meteors, and Comets

36. Big Dipper Moon