Atmospheric Composition The atmosphere is made up of

Atmospheric Composition • The atmosphere is made up of a mixture of invisible gases. The main gases in the atmosphere are nitrogen, oxygen and carbon dioxide. • In addition to these gases, the lower layers of the atmosphere contain water vapour. From a weather standpoint, this water vapour is the most important constituent of the atmosphere. Level Four 413. 01 a OHP # 1

Properties of the Atmosphere • MOBILITY • CAPACITY FOR EXPANSION • CAPACITY FOR COMPRESSION Level Four 413. 01 a OHP # 2

Circle the letter which corresponds to the answer of each of the following questions: Name: Which of the following are three principal properties of the atmosphere: Identify the three main gases that are present in the atmosphere: A. Nitrogen A. Mobility B. Carbon Monoxide B. Viscosity C. Helium C. Pressure D. Hydrogen D. Capacity for Expansion E. Oxygen E. Fluidity F. Carbon F. Capacity for Compression G. Carbon Dioxide G. Capacity for Combustion Choose the word which best fits the following sentence: Because the atmosphere has Temperature Level Four 413. 01 a it exerts a pressure on the Earth’s surface. Weight Mobility OHP # 3

Circle the letter which corresponds to the answer of each of the following questions: Name: Which of the following are three principal properties of the atmosphere: Identify the three main gases that are present in the atmosphere: A. Nitrogen A. Mobility B. Carbon Monoxide B. Viscosity C. Helium C. Pressure D. Hydrogen D. Capacity for Expansion E. Oxygen E. Fluidity F. Carbon F. Capacity for Compression G. Carbon Dioxide G. Capacity for Combustion Choose the word which best fits the following sentence: Because the atmosphere has WEIGHT it exerts a pressure on the Earth’s surface. Temperature Level Four 413. 01 a Weight Mobility OHP # 4