Science Test

Card Set Information

Author:
Pranxtor
ID:
117845
Filename:
Science Test
Updated:
2011-11-19 07:18:37
Tags:
science test exam space earth beyond chemistry life living biology physics electronics
Folders:

Description:
For my end of year science exam. Year 9
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Pranxtor on FreezingBlue Flashcards. What would you like to do?


  1. Who discovered that the universe was expanding in 1929?
    Edwin Hubble, astronomer.
  2. What is redshift?
    The spectra, or the intensity of light of faint objects.
  3. When about did the big bang occur?
    About 14 billion years ago.
  4. How large was the universe 14 billion years ago?
    Thousands of times smaller than a pin head.
  5. What began with the big bang?
    Time, space and matter.
  6. Is the universe still expanding today?
    Yes.
  7. Over the first three minutes of the big bang the universe cooled by how many degrees?
    Below 1 billion degrees celsius.
  8. What were the first two elements created?
    Hydrogen and helium.
  9. Does the big bang theory say what caused it?
    No.
  10. Why does gravity differ on different planets.
    Planets vary in size and mass.
  11. What percentage of gravity does mercury compared to earth?
    38%
  12. Which planet has a radius of 4,879km?
    Mercury.
  13. Which planet has slightly over 90% of earths gravity.
    Venus.
  14. What percentage of earths gravity does mars have?
    37%
  15. Hydrogen
    H
  16. Helium
    He
  17. Carbon
    C
  18. Lithium
    Li
  19. Zinc
    Zn
  20. Calcium
    Ca
  21. Iron
    Fe
  22. Cobalt
    Co
  23. Nickel
    Ni
  24. Copper
    Cu
  25. Nitrogen
    N
  26. Oxygen
    O
  27. Neon
    Ne
  28. Sodium
    Na
  29. Magnesium
    Mg
  30. Aluminum
    Al
  31. Phosphorus
    P
  32. Sulfur
    S
  33. Chlorine
    Cl
  34. Potassium
    K
  35. What are the atoms in the molecule?
    Oxygen, Hydorgen, Hydrogen
  36. Why is water is called H2O?
    It has 2 hydrogen and 1 oxygen atom
  37. Water forming on the outside of a glass of ice water, your mirror fogging over after you get out of a hot shower, and dew on the grass in the morning, are all examples of what?
    condensation
  38. Water covers about what percent of the earth?
    75%
  39. About what percent earths water is in the oceans?
    97%
  40. Why can't we drink the water in the ocean?
    It is to salty
  41. What is salinaty?
    measure of salt in the water
  42. What kind of water do humans need?
    fresh water
  43. Most of earths fresh water is frozen where?
    glaciers
  44. What percent of earths water can humans drink?
    1%
  45. Where do we get drinking water? (there are 4)
    • rivers
    • stream
    • lakes
    • aquifers
  46. The root word of _____________________ is "condense" which means to make smaller.
    condensation
  47. The root word of _______________________ is "precipitate", which means to move or fall.
    precipatation
  48. What is the source of energy that makes the water cycle happen?
    the sun
  49. List 5 ways you use water in your everyday life
    • swimming
    • bathing
    • drinking
    • cleaning
    • cooking
    • watering the plants
    • (or any other use)
  50. Is the Ocean fresh or salt water?
    salt
  51. Is the Ocean solid or liquid?
    liquid
  52. Changes in apparent shape of the moon
    Phases
  53. Objects that move between Mars and Jupiter
    Asteroids
  54. Imaginary line that Earth rotates around
    Axis
  55. Small mass of ice and dust that orbits the sun
    Comet
  56. Path an object takes when revolving around another object
    Orbit
  57. An object that moves around another
    Satellite
  58. Large object that moves around a star
    Planet
  59. Burning sphere of gases
    Star
  60. Vast majority of asteriods are found between Mars and Jupiter in the
    Asteroid belt
  61. Diffuse region around the nucleus of the comet, a region of relatively dense gas
    Coma
  62. Interior to the coma is the __, a mass of mostly water ice with rocky particles
    Nucleus
  63. Constant outflow of charged particles from the outer atmosphere of the Sun, which moves past Earth with a velocity of 400 km/s
    Solar wind
  64. Largest non-plantary or non-lunar objects in our solar system, larger then 100m in diameter
    Asteriods
  65. What are the four basic categories of minor objects
    Meteoroids, Asteroids, Comets Dust and Gas
  66. Moon passes through the shadow of the Earth (longer duration)
    Lunar eclipse
  67. Patterns of brighter stars
    Constellations
  68. Moon phases in front of the sun
    Solar eclipse
  69. Integrated set of statements used to explain natural phenomena
    Theory
  70. The study of the stars
    Astronomy
  71. Site at which one or more telescopes have been constructed
    Observatory
  72. 94% of astreoids are found between
    Jupiter and Mars
  73. Smaller bodies in between planets, defined as any rocky-metallic ojects less than 100 meters in size
    Meteoroids
  74. While heated to incandescence by atmospheric friction during their passage through atmosphere
    Meteors
  75. A fragment that survives to hit the ground
    Meteorite
  76. Moon Phases
  77. (increasing illimination) 1st quater to full
    New moon waxing
  78. Less than half is illuminated by sunlight
    Crescent
  79. Between full and quarter
    Gibbous
  80. Mercury has 38% the gravity of Earth
  81. Mars has 37% the gravity of earth and the lowest in the solar system.
  82. Venus has 90% the gravity of earth.

What would you like to do?

Home > Flashcards > Print Preview