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