7-26. The circulation which produces a balance 

 of heat in the Northern Hemisphere is 

 best described as a 



1. short tropical column of air bursting 

 at the bottom and moving northward, 

 and a tall polar column breaking off 

 aloft and moving southward 



2. short tropical column of air breaking 

 off aloft and moving northward, and a 

 tall polar column bursting at the 

 bottom and moving southward 



3. tall tropical column of air bursting 

 at the bottom and moving northward, 

 and a short polar column breaking off 

 aloft and moving southward 



4. tall tropical column of air breaking 

 off aloft and moving northward, and a 

 short polar column bursting at the 

 bottom and moving southward 



7-32. Matter may be found in which of the 

 following states? 



1. Gas only 



2. Liquid only 



3. Solid only 



4. Gas, liquid, or solid 



Items 7-33 through 7-36 refer to the 

 * following general properties of matter: 



A. Mass 



B. Density 



C. Permanence 



D. Inertia 



E. Specific gravity 



F. Impenetrability 



G. Weight 

 H. Porosity 

 I . Volume 



J. Gravitation 



Learning Objective: Recognize the 

 meaning of basic physics and the 

 composition, forms, properties, 

 and characteristics of matter. 



7-33. This property remains the same regardless 

 of altitude or latitude. 



1. A 



2. B 



3. G 



4. J 



7-27. All matter is composed of which of the 

 following basic particles? 



1. Protons and electrons 



2. Atoms and molecules 



3. Molecules and neutrons 



4. Electrons and molecules 



7-28. What is the smallest unit into which water 

 can be divided and still retain the char- 

 acteristics of water? 



1. Atom 



2. Proton 



3. Molecule 



4. Electron 



7-29. What is the smallest particle in a chemi- 

 cal element? 



1. A compound 



2. A molecule 



3. An element 



4. An atom 



7-34. These properties vary with both latitude 

 and altitude. 



1. A and B 



2. D and E 



3. G and I 



4. G and J 



7-35. This property is the product of three 

 linear measurements. 



1. A 



2. E 



3. G 



4. I 



7-36. This property of an object is derived by 

 dividing the object's mass by its volume. 



1. B 



2. D 



3. E 



4. I 



7-30. A compound is formed from which of the 

 following? 



1. A combination of two or more atoms 



2. A mixture of elements 



3. A mixture of atoms 



4. A combination of two or more elements 



7-31. Air is an example of which of the follow- 

 ing? 



1. A mixture 



2. An element 



3 . A compound 



4. A substance 



Learning Objective: Identify terms 

 and units of measure employed in the 

 metric system, and solve problems of 

 metric system unit conversion. 



7-37. The metric (CGS) system has been adopted 

 by meteorologists to measure units of 



1. length, mass, and time 



2. gravity, density, and force 



3. centimeters, grams, and seconds 



4. circular motion, gravity, and speed 



41 



