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Across 3. A mudflow is erosion caused by rainfall and _______ 4. The continental _______ is part of the continent that extends underwater into the ocean. 6. The speed of _____ helps to predict how fast an approaching storm will arrive. 7. Water that flows over the earth's surface and into streams. 9. When air contains too much ________, humidity is high. 12. Soil is a mixture of weathered rocks, and remains of plants and ______. 14. ________ climate has high temperatures and humidity 16. A change is air pressure means a change in _______ 18. Freezing water and growing tree roots cause _______ weathering of rocks. 20. An area where runoff drains into a river and its tributaries is a ________ basin. 22. A _______ measures air temperature. 23. The water cycle is the continuous _______ of water between the atmosphere and Earth's surface. 26. __________ is the breaking down of rocks on the earth's surface. 28. A _________ measures humidity.

Down 1. A ________ is used to find wind direction. 2. _____ climate has cold temperatures and little precipitation 5. _______ is the wearing away and moving of weathered rock and soil. 8. A ___________ is a spring that lies close to hot rock or magma. 10. _______ climate has the greatest weather changes. 11. A glacier moves loose rocks and soil downhill until it melts and deposits sediment in ridges or _______. 13. An air mass has the same temperature & ________ throughout. 15. Large stream of water in the ocean caused by winds. 17. This tool measures air pressure 18. The _______ ridge is an underwater mountain chain. 19. An ______ measures wind speed 21. This tool measures amount of rainfall 24. A _____ forms when a river deposits sediment where it empties into a lake or ocean 25. Reservoirs are artificial ______ that store large amounts of fresh water. 27. Groundwater sinks into the ground until it comes to a solid ____ layer that it cannot move through.