Across
- 2. this compound, along with water, increases the thickness of lava as well as its explosiveness
- 4. the season caused when part of Earth is tilted more toward the Sun
- 5. created by an earthquake; mapped to allow us to know the Earth's interior
- 8. Venus & Earth both experience a __________ effect due to their atmospheres
- 11. large planet colored with bands of brown, red, and tan
- 12. one probe sent to the Moon to measure conditions and gather mineral samples
- 13. the 4th planet from the Sun
- 14. this telescope uses clear lenses
- 16. the hard, frozen part of a comet
- 18. large, dark plains of hardened lava on the moon
- 19. the strength of an earthquake as measured by the Richter Scale
- 20. mountain-like landform that forms from successive eruptions from a vent
- 21. the least number of seismograms needed to locate the epicenter of an earthquake
- 24. vibration caused by moving tectonic plates
- 25. the phase right after the New Moon
- 28. developed the Sun-centered theory of the universe
- 29. magma that reaches the Earth's surface
- 30. a ______ eclipse occurs when the Moon blocks the Sun's light from reaching Earth
- 31. the ______ tide happens when the Sun, Moon, and Earth create a right angle
- 32. a crack that forms in the Earth's crust
- 33. the ______ telescope does not require light and looks like a large satellite dish
- 35. pulling force that causes normal faults
- 36. the first & fastest seismic wave generated by an earthquake
- 42. one of these equals 1 year
- 43. formed when magma hardens in a horizontal crack
Down
- 1. ____________ dating measures radioactive isotopes to determine the age of a rock layer
- 3. this telescope uses curved mirrors
- 6. the _______________ spectrum is energy organized by wavelength
- 7. side-to-side force that causes slip-strike faults
- 9. Neptune and Uranus appear this color due to the methane in their atmosphere
- 10. a disturbance in an established rock layer
- 13. a bright streak across the sky
- 15. the depression often found around the top of the volcano
- 17. squeezing force that causes reverse faults
- 22. largest igneous formation; magma hardens in a large body underground
- 23. Neil _________ was the first man on the Moon
- 26. the second & slower seismic wave generated by an earthquake
- 27. a meteoroid that strikes Earth
- 30. the ______ tide shows the greatest tidal range
- 34. the speed of _______ equals 300000 km/s
- 37. ____________ dating compares rock layers to each other
- 38. the Modified ___________ scale measures the intensity of the earthquake
- 39. the 2nd planet from the Sun
- 40. the exact location in the Earth where an earthquake starts
- 41. formed when magma hardens in a vertical crack