1. Sciences

    Will al earth’s resources last forever?
  2. science

    explain why earth has a moon
  3. Science

    When did our Earth form to a planet? =]
  4. science

    why does the moon have more craters than the earth?
  5. earth science9volcanos0

    when a volcano becomes dormant it is...
  6. Astronomy

    The precession of the Earth its causes, and its ramifications
  7. Science

    What is the lowest atmosphere on earth?
  8. Science

    Which of Earth sprees contain most of the mass?
  9. Science

    Why are there so many different species on earth today?
  10. math

    If I am 11 years old on Earth,how old will I be in Mercury?
  11. Science

    If we can't dig to the center of the earth, how do we know that is down there?
  12. project

    save the earth with picture
  13. Science

    what is the distance above Earth's surface?
  14. physics

    at what attitude the value of g would become one forth than on the surface of the earth?
  15. earth

    How does time affect crystals?
  16. Science

    What are some bad things on Earth ?
  17. earth science

    A heterogeneous mixture is a
  18. science

    where does the earth loose energy to ??
  19. science

    what planet has almost the same density as earth?
  20. earth

    what is the chemical formula of chock?
  21. earth

    What does the phrase "salt of truth" mean?
  22. science

    will earth get smaller in the future?if does why?
  23. geometry

    how do i find the radius of the earth
  24. earth science

    soil maps are used to do what
  25. Earth science

    What is a relief map?
  26. physics

    in the model ,how far away from the earth would the sun be?
  27. science

    how did the miners of chile get into the earth
  28. science

    What are some causes for the changing of Earth's surface?
  29. Geography

    During the formation earth , from where does the water came ?
  30. Chemistry

    Most of the earth is made of what? Is it helium?
  31. earth science

    How do astronomers use satellites?
  32. science

    How Do the Earth's Four Subsystems Work Together?
  33. earth science

    What latitudes are most likely to see glaciers? A. 30° N and 30° S B. 10° N and 10° S C. 45° N and 45° S D. 90° N and 90° S
  34. Kumar

    What is the life of earth ? explain and why?
  35. 9th grade

    how earth rotates?
  36. Science

    Why the earth rotate each 24 hours?
  37. science

    What do earth`s plates float on?
  38. science

    When is the Earth farthest from the sun?
  39. Africa

    What is a deep trench in the earth
  40. physics please help

    In a physics laboratory experiment, a coil with 170 turns enclosing an area of 10cm^2 is rotated from a position where its plane is perpendicular to the earth's magnetic field to one where its plane is parallel to the field. The rotation takes 5.0×10^2 s
  41. 8th grade

    A) light travels at approximately 186,000 miles per second. approximately how far will it travel in 1 minute? express your answer in scientific notation B) the sun is approximately 93,000,000 miles from the earth. about how long does it take light to
  42. french

    can someone help me edit this? Bonjour, mon client s'appelle Tiffany. En général, elle est très énergique et très sportive. Elle a aussi une grande collection de certificats et des prix. Pendant son temps libre, Tiffany aime lire, jouer de
  43. math

    The owner of Campus Cafe plans to open a second location on a satellite campus in 5yrs. She buys an annuity that pays 10.5% interest compounded annually A. If the payment is $4000 a year, find the future value of the annuity in 5yrs. B. How much more
  44. Maths

    A particle rotates in a circular orbit about a point located 30cm away, with angular speed 2 rad s^-1. If the angular momentum is 0.2 Js, determine the mass of the particle. I used L=mr^2 omega and got 1.11kg A constant torque of 0.2Nm accelerates the
  45. science

    I need to know about the wind patterns, tides/high and low,or upwelling for the north sea,irish sea,and the bay of biscay Thank you for using the Jiskha Homework Help Forum. Here is what I find: 1.
  46. Physics-Please check

    Posted by JulieAnne on Wednesday, January 5, 2011 at 5:15pm. Please check my two answers I was sitting in a park on a bench next to another person and I moved tow times the original distance between the two of us, the force of gravity between me and the
  47. Physics

    a. An object has a mass of 33 kg. The acceleration of gravity is 9.8 m/ s^2. What is its weight on the earth? Answer in units of N. 2. What is its mass on the moon where the force of gravity is 1/6 that of the earth? Answer in units of kg. 3. What is the
  48. math

    What kinds of products are manufactured to be parabolic? Name some things that can be elliptical. Parabola: satellite dish, headlights ellipse: The “whisper chamber” in the United States Capitol is an ellipse, stand at one focus and whisper, and anyone
  49. 7th grade Social Studies Ms. Sue

    1. Which climate region dominates most of Northern Africa? (1 point) humid continental highland tundra arid 2. What kind of storm covers the largest area? (1 point) rainstorm blizzard hurricane tornado 3. Earth’s climate is affected by latitude,
  50. Logarithms

    Kepler's third law of planetary motion relates P, the period of a planet's orbit, to R, the planet's mean distance from the sun, through the equation log P = 1/2 (log k + 3 log R), where k is a constant. a) Rewrite the formula as a single logarithm. b)
  51. CONSUMER MATH

    The owner of Campus Cafe plans to open a second location on a satellite campus in 5yrs. She buys an annuity that pays 10.5% interest compounded annually A. If the payment is $4000 a year, find the future value of the annuity in 5yrs. B. How much more
  52. English

    Are the following sentences possible? Thank you very much. 1) He shot me in the leg. 2) He showed me the way to the supermarket. 3) He likes shooting. 4) He shouted at him. 5) I always show my gift card to the check-out clerk so that I can get a discount
  53. science

    write T if the statement is true or F if it is false. a.)All the planets travel around the sun at the same speed.my answer is T. b.)The sun's gravity keeps the planets in orbit around it. my answer is F. c.)There is an asteroid belt between Jupiter and
  54. History

    What options best indicate ways in which the collapse of the Soviet Union affected other governments? (Select all that apply.) a. Ambassadors to the former Soviet Union had to be reassigned to the new republics b. States could establish their own Communist
  55. physics

    What two facts did Newton need to be able to calculate the acceleration of the Moon? 1) the distance to the Moon and the diameter of the Moon. 2) the time it takes the Moon to make one revolution and the distance from the Earth to the sun. 3) the diameter
  56. physics

    What two facts did Newton need to be able to calculate the acceleration of the Moon? A) the distance to the Moon and the diameter of the Moon B) the time it takes the Moon to make one revolution and the distance from the Earth to the sun C) the diameter of
  57. physics

    What two facts did Newton need to be able to calculate the acceleration of the Moon? 1) the distance to the Moon and the diameter of the Moon. 2)the time it takes the Moon to make one revolution and the distance from the Earth to the sun. 3)the diameter of
  58. Math

    Could someone please check my work on these word problems? My solutions just don't seem right, could you please let me know where I may have messed up. Many people know that the weight of an object varies on different planets, but did you know that the
  59. physics (Newton's law of gravitation)

    Can anyone please help me with this question? I am really confused. A neutron star and a black hole are 2.400e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030
  60. earth science

    what are basic things that we should know about deposition?
  61. physics

    what is the weight of a 3.0 kg object on the surface of the earth?
  62. Science

    Which waves can be used to map the interior of earth?
  63. math

    Find the weight of a 60 kg astronaut on earth?
  64. science

    How do the Sun, Earth, and Moon depend on each other?
  65. Science

    When are tides in the earth's oceans the highest
  66. physics

    What length of pendulum has a period of 0.9 s on Earth?
  67. science

    Describe the motions that causes one day on earth
  68. French

    What is the significance of the scorched- earth policy??
  69. Earth Science

    What is the landform of the Grand Teton?
  70. geophysics

    how would you exaplain how and why each of the four moon phases appear to look like they do to us here on earth?
  71. science

    how are resources brought up from the earth's surface?
  72. science

    what are some ways Earth is protected by its atmosphere?
  73. social studies

    What are the names of the four hemisphere on Earth?
  74. physics

    What length of pendulum has a period of 0.9 s on Earth?
  75. physics

    what is the mass of a 1000N man on earth?
  76. science

    what are some items on earth that look similar to the moon?
  77. Science

    What is th weight on earth of a girl with a mass of 30 kg?
  78. Chemistry

    What is the mass of a 4 kg object, A. On the earth (g=-10 m/s/s) B. On the moon (g=-2 m/s/s)
  79. science

    which one of earth's layers has the hottest temperature? why?
  80. Science

    Why is Earth is the omnipresent conductive surface?
  81. science

    which planet other than earth may be livable by humans?
  82. science

    what is the outermost layer of earth's surface
  83. science

    how much less is the gravity on the lunar surface than on earth?
  84. earth

    Was there any magnetic pulling during the Mesozoic Era?
  85. science

    does anybody know where i can find info. about the earth's crust?
  86. Earth science

    How do I calculate 220grams of c-14 to 55 grams of c-4?
  87. earth

    how do isostatic adjustments affect isostasy
  88. Physics

    Why is the most common frame of reference Earth?
  89. Physics

    How far above the surface of the earth would you have to be before your weight is reduced by 12.89%? Please Help !
  90. Science

    how many of earth's atmospheres is on you at sea level?
  91. provine

    How does the tilt of the earth affect climate
  92. Physics

    How can one solve this equation for t? Y = 1.3 + 18.8 t - (g/2) t^2 = 0 (Assume g = 9.8 m/s^2, the value on Earth)
  93. Science

    How did people shape the Earth? Please answer thanks
  94. science

    what material is earth and mars made of ?
  95. earth science

    what are the variables on rocks and minerals
  96. math

    How big is the sun compared to earth.
  97. physical geography

    what are the five most important paralells of the earth?
  98. Earth science

    What is the primary cause of crustal movement?
  99. earth

    what type of magma flows very quickly
  100. science

    how are mercury and venus similar to earth?