Across
- 1. the boundary between two different air masses
- 4. a short term climate change that occurs every two to ten years
- 5. a large group of cells that all have the same purpose or function
- 6. forms when a cold air mass pushes a warm air mass; thunderheads can form followed by cool, fair weather
- 9. system (of nerves) in your body that sends messages for controlling movement and feeling between the brain and the other parts of the body
- 11. thick, fluffy clouds with flat bases, formed by vertically rising air currents, usually mean fair weather
- 15. global winds in the United States that constantly blow from west to east
- 19. the basic unit of life; the smallest living part of the body
- 20. system that breaks down food into a form that can be used by the body
- 22. the falling to earth of any form of water (rain, snow, sleet, hail)
- 24. a flow of air or water in a certain direction
- 25. system that helps support and move the body and protect some of the organs
- 27. clouds that form in flat layers and often cover much of the sky- usually mean rain or snow
- 29. composed of many cells
- 33. on of the halves of the earth as divided by the equator
- 35. a warm ocean current that flows from the Gulf of Mexico northward through the Atlantic Ocean
- 36. system that transports materials such as food, and oxygen to the cells throughout the body
Down
- 2. tissues that work together to perform a specific function
- 3. rain, snow melt, or other water that flows in surface streams, rivers, or other bodies of water
- 4. an imaginary line around the Earth forming the great circle that is equal distance from the north and south pole
- 7. a group of structures that work together to perform a specific function or task
- 8. a high-speed high-altitude airstream blowing from west to east near the top of the troposphere; had important effects of the formation of weather fronts
- 10. a type of cumulus cloud that is tall and gray, and associated with thunderstorms
- 11. wispy, feathery clouds made of ice crystals that form at high levels- usually mean fair weather or a change in weather
- 12. a mass of rising warm air that usually brings wet, stormy weather
- 13. the average weather conditions in an area over a long period of time
- 14. a mass of sinking cold air that usually bring fair weather
- 16. system used to bring in oxygen for the body to use and to take away carbon dioxide
- 17. a body of air that has about the same temperature and moister throughout
- 18. the condition of Earth’s atmosphere at a particular time and place
- 21. system that controls all movement in the body
- 23. the process by which water changes from liquid form to an atmospheric gas
- 26. an imaginary line around the Earth parallel to the equator
- 28. a front where warm air moves over cold air and brings drizzly rain and then are followed by war and clear weather
- 30. the process by which plants release water vapor into the atmosphere
- 31. the process by which water molecules of water vapor in the air become liquid water
- 32. composed of one cell
- 34. the amount of water vapor in the air