1 / 47

ASTRONOMY

ASTRONOMY. - study of all physical objects in space. History of Space – 10:25. Our amazing world. I. History Timeline. 50s – Russian Sputnik – 1 st satellite in space__. TIMELINE. ___________________________________ 50s ’61 Alan Shepherd – 1 st American

nellis
Download Presentation

ASTRONOMY

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ASTRONOMY - study of all physical objects in space

  2. History of Space – 10:25

  3. Our amazing world

  4. I. History Timeline 50s – Russian Sputnik – 1st satellite in space__

  5. TIMELINE ___________________________________ 50s ’61 Alan Shepherd – 1st American in space

  6. TIMELINE ___________________________________ 50s ’61 ’62 John Glenn- orbits earth

  7. TIMELINE ___________________________________ 50s ’61 ’62 ’68 around moon

  8. TIMELINE ___________________________________ 50s ’61 ’62 ’68 ’69 Neal Armstrong 1st to walk on moon Armstrong, Michael Collins, Buzz Aldrin

  9. TIMELINE ___________________________________ 50s ’61 ’62 ’68 ’69 80s space shuttle 1st reusable spacecraft

  10. TIMELINE __________________________________ 50s ’61 ’62 ’68 ’69 80s 1990s – Hubble space telescope

  11. II. Universe A. Distance measured 1. light year – distance light travels through space in one yr. 2. Astronomical Unit (A.U.) – distance between earth & sun (93 million miles)

  12. B. Galaxy – large group of stars that travel together 1. star – giant ball of hot glowing gases

  13. Constellation – sections w/patterns

  14. 2. Milky Way – spiral shape

  15. III. Our Solar System – sun + 8 planets A. Planetary Motion 1. revolution – planets orbit around sun; causes 1 year 2. rotation – spins on axis; causes day/night

  16. B. Sun – closest star 1. core made of H atoms fuse to formHe atoms - (nuclear fusion) 2. Gravity – keeps planets in orbit 3. Sunspots – dark areas on surface (cooler gases)

  17. Our Sun – 3:16

  18. C. Planets – My very educated mother just served us nachos 1. Inner Planets – small & dense; rocky a. Mercury – no atmosphere; ½ HOT & ½ FREEZING; No life

  19. b. Venus – CO2 atm. (+H2SO4) – traps heat; hottest planet; rotates opposite earth

  20. c. Earth – H2O (life); N2 & O2 atmos.; 1 moon (Luna) – natural satellite: object that orbits a planet

  21. Earth

  22. d. Mars – “Red Planet” – red soil; mainly CO2 (cold); 2 tiny moons

  23.  Asteroid Belt – separates inner & outer Planets; most asteroids found here

  24. 2. Outer Planets – gas giants (rings); no known solid surfaces a. Jupiter – largest; 62 moons; thin set of rings; “Great Red Spot” – hurricane-like storm

  25. b. Saturn – 2nd largest; ice & dust; 61 moons (Titan – 2nd largest moon); known for large rings

  26. C. Uranus – axis runs sideways; 27 moons

  27. d. Neptune – “The Blue World”; crosses Pluto’s path to switch positions; winds up to 700 mph; 13 moons (Pluto – dwarf planet)

  28. Planets – 3:42

  29. D. Moons 1. all (exc. Mercury/Venus) have moon (s) 2. reflect light

  30. 3. Phases – different appearance a. New Moon – no sunlight facing earth; moon between sun & earth; - after: amt. of light gets larger (waxes) b. 1st Quarter – sunlight on the right ½

  31. c. Full Moon – see whole moon; - after: amt. of light gets smaller (wanes) d. 3rd Quarter – sunlight on left side 4. Takes 27 1/3 days

  32. Phases of the Moon – 4:09

  33. 5. Eclipse – shadow of one body falls on another a. lunar eclipse – earth comes between the sun & moon; shadow of earth covers moon; turns red (bloody MES)

  34. b. Solar Eclipse – moon comes between earth & sun; shadow of moon covers earth; can blind you; (EMS)

  35. Total Eclipse of the Sun – 2:50

  36. 6. Tides – rise & fall of Earth’s water; gravity causes it a. high tide – moon’s gravity pulls water toward point on Earth’s surface closest to moon

  37. b. spring tide – 2x/mo. (new & full moon) – earth, moon, & sun line up: very high & very low tide c. neap tide – 2x/mo. (1st & 3rd quarter) – 3 form 90o angle; tides w/least difference

  38. Tides – 1:42

  39. E. Other small bodies 1. Asteroids – small rocky objects that orbit sun; in Asteroid Belt (between Mars & Jupiter)

  40. 2. Comets – ball of ice & dust – orbits sun; 10 miles across & tail 100 million miles (as tail passes near sun, it melts & evaporates forming glowing tail)

  41. Haley’s Comet

  42. 3. Meteoroid – piece of rock or dust in space from asteroids or comets a. meteor – “Shooting Star” meteoroid enter atmosphere – burn  streak of light

  43. Comets & Meteors – 3:55

  44. Shooting Star

  45. b. meteorite – doesn’t burn completely & falls to ground c. meteor shower – when Earth passes through dusty debris left behind the orbit of a comet

  46. Meteors, Meteoroids, Meteorites – 2:16

  47. THE END!!!

More Related