Unit E: Space Exploration

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Across
  1. 2. the distance between two objects in space is measured in _____________ units and is equivalent to about 150 million km.
  2. 5. a ___________ telescope that bends light with mirrors.
  3. 7. if a star is moving away from us, the dark lines shift toward the long-wave end is said to be ______ shifted.
  4. 8. an orbit that is higher in altitude and rotates at the same speed as the Earth.
  5. 12. small pieces of rock flying through space with no particular path.
  6. 14. the shorter the wavelength, the greater the _____________ power and vice versa. Helps determine the precision of an image produced.
  7. 16. Mercury, Venus, Earth and Mars are classified as this type of planet.
  8. 20. the forces of gravity acting on a mass in orbit around Earth are greatly reduced.
  9. 22. the ____________ spectrum that shows every color. Produced by matter heated at high pressures.
  10. 23. the model of the universe that is centered around the Earth.
  11. 24. if a star is moving toward us, the dark lines shift toward the short-wave end is said to be ______ shifted.
  12. 25. angle of elevation
  13. 27. ___________ optics is technology used to adjust the mirror of a telescope or the image to compensate for the effects of the movement of our atmosphere.
  14. 28. the ____________ spectrum that only shows thin lines of color. Produced when gases are heated at low pressures.
  15. 30. a reflecting telescope that orbits Earth that was launched in the year 1990.
  16. 31. the ____________ spectrum that shows dark lines on a continuous spectrum. Produced when a continuous spectrum of light passes through a cooler gas.
  17. 33. a phenomenon caused by the movement of an observer towards or away from the source of a wave which gives the perception of a variation in frequency is called the ___________ effect.
  18. 34. the device or material carried by the rocket
  19. 36. the apparent shift in the position of an object depending on the position of the observer.
  20. 38. a ___________ telescope bends light with only lenses.
  21. 40. the model of the universe that is centered around the Sun.
  22. 41. a set of all galaxies. There is only 1.
Down
  1. 1. a ___________ telescope that uses both lenses and mirrors.
  2. 3. when a small piece of rock flying in space get pulled into the atmosphere by Earth's gravity.
  3. 4. a small piece of rock flying through space that hits the surface of the Earth.
  4. 6. the Sun and Jupiter are the two largest emitters of __________ waves in our Solar System.
  5. 9. a device that breaks down light into bands of color.
  6. 10. when the Sun reaches its highest or lowest point in the sky at noon.
  7. 11. a rocket that ejects or detaches sections of itself when there is no more fuel.
  8. 13. the study of the interaction between light and matter (the science of color).
  9. 15. a cloud of gas and dust. First stage in the formation of a star.
  10. 17. a huge bubble of gas.
  11. 18. a _________ year is the distance light travels in one Earth year. About 9.5 trillion km.
  12. 19. an indirect measure of distance where an imaginary is created where an observer and an object whose distance is to be determined.
  13. 21. a mass of ice, rock and dust flying through space often with a tail.
  14. 23. sets of millions of stars, dust and gas.
  15. 26. a tube with one end containing fuel and the other end containing a payload.
  16. 29. by connecting two or more telescopes together via computers, we can have a telescope the size equal to the distance between them is called ______________.
  17. 32. a system where a series of axes are used to determine the position or movement of certain things is called a _________ point.
  18. 35. an artificial ___________ is made by humans and used to observe the Earth and objects in space.
  19. 37. first angle that begins opposite the North Pole and continues clockwise.
  20. 39. Jupiter, Saturn, Uranus, Neptune are classified as this type of planet.