Scientists who collect data using a variety of instruments and then...					
				 
			
									
							 
						
			
			Tool used to measure air temperature					
				 
			
									
							 
						
			
			Tall, dark clouds that are associated with thunderstorms.					
				 
			
									
							 
						
			
			Tool used to measure precipitation.					
				 
			
									
							 
						
			
			Tool used to measure wind velocity, or speed					
				 
			
									
							 
						
			
			Amount of moisture, or water vapor, in the air.					
				 
			
									
							 
						
			
			Thunderstorm meets strong winds high in the sky, the winds can cause...					
				 
			
									
							 
						
			
			The boundary between two air masses that have different temperatures...					
				 
			
									
							 
						
			
			White puffy clouds that look like cotton and are associated with sunny...					
				 
			
									
							 
						
			
			Thin, feathery clouds made of ice crystals that are seen high in the...					
				 
			
									
							 
						
			
			Tool used to measure air pressure					
				 
			
									
							 
						
			
			Warm, low pressure weather system surrounded by cooler air over ocean...					
				 
			
									
							 
						
			
			Mass of light air that sometimes moves in and slides over a mass of...					
				 
			
									
							 
						
			
			VEry large body of air that is spread over hundreds of miles and has...					
				 
			
									
							 
						
			
			Push caused by the weight of air.					
				 
			
									
							 
						
			
			Smooth gray clouds that cover the whole sky and usually bring light...					
				 
			
									
							 
						
			
			Does coldor warm air form low pressure areas?					
				 
			
									
							 
						
			
			Hurricanes, thunderstorms, and tornadoes are caused by					
				 
			
									
							 
						
			
			What air is more dense? Cold or hot					
				 
			
									
							 
						
			
			Mass of heavy air that sometimes slides underneath a mass of lighter...					
				 
			
									
							 
						
			
			__________ pressure usually contain clouds.					
				 
			
									
							 
						
			
			Warm, moist air near the ground is covered by a mass of cold air, a...					
				 
			
									
							 
						
			
			All storms have strong winds and _______ air pressure					
				 
			
									
							 
						
			
			Does cold or warm air form high pressure areas?					
				 
			
									
							 
						
			
			_______ pressure areas usually have very few clouds.