mrs.kargbo

What is the most abundant gas in the atmosphere? 

• oxygen
• nitrogen
• helium
• carbon dioxide 

What percent of the gases within the atmosphere is oxygen? 

• 50%
• 67%
• 21%
• 18%

What percent of gases within the atmosphere is nitrogen? 

• 78%
• 80%
• 50%
• 38%

What are the layers of atmosphere, as listed as closest to farthest from the earth? 

• troposhpere, mesosphere, thermosphere, exosphere
• mesosphere, thermosphere stratosphere, troposphere, exosphere
• troposphere, stratosphere, mesosphere, thermosphere, exosphere 
• exosphere, thermosphere, mesosphere, stratosphere, troposphere

What is the relationship of air pressure to increasing altitude? 

• low air pressure = high altitiude
• high air pressure= high altitude
• low air pressure = low altitude

When the sun heats up liquid water and changes it to a gas, what is this stage of the water cycle? 

• condensation
• evaporation
• transpiration
• run off

What is the process where rain water soaks into ground, through the soil and underlying rock layers?

• infiltration
• precipitation
• condensation
• transpiration

Water that collects in rivers, streams, and oceans.  What part of the water cycle is this?

• transpiration
• condensation
• evaporation
• run off 

The process of evaporation from plants.  Is what part of the water cycle.

• transpiration
• condensation
• evaporation
• run off 

As water rises higher in the atmosphere, it starts to cool and become a liquid again.  What stage of the water cycle is this?

• Precipitation 
• infiltration
• condensation
• evaporation