Metrology

The amount of water vapor in the atmosphere is called the

• Air temperature
• Air pressure
• Humidity
• Dew Point

The amount of water vapor in the air compared to maximum amount of water vapor the air can hold is the    .

• Absolute humidity
• Relative humidity
• Dew point
• Air pressure

The temperature to which air must be cooled to be completely full of water vapor (completely saturated).  

• Absolute humidity
• Relative humidity
• Dew point
• Transpiration

On a weather map, the area where tornadoes are likely to form is called the   .  

• Cold front
• Tornado line
• Wet line
• Dry line

In this scenario:
7:30 am  55 degrees  50% humidity
9:30 am  70 degrees  30% humidity

Why did the relative humidity go down?

• I breathed in a lot of water vapor.
• Warm air can hold more water vapor, so the percentage goes down.
• The students dry out the air.
• The students breathed in the water vapor.

Tornadoes form near the dry line.  What else must be there for a tornado to form?

• A large thunderstorm
• Warm ocean water
• Cold, moist air
• A girl with ruby slippers

The two ways that water vapor usually gets into the air are

• Evaporation and condensation
• Evaporation and transpiration
• Perspiration and evaporation
• Transpiration and convection

The radiant energy from the sun is converted into heat when it hits the ground and the oceans.  The atmosphere traps some of this heat to keep the planet warm.  This is called                   .

• Transpiration
• Global Warming
• the Greenhouse Effect
• The Oceaan Effect

In this weather station model, the temperature is

• 11 degrees Fahrenheit
• 27 degrees Fahrenheit
• 25 degrees Celsius
• 25 degrees Fahrenheit

In this weather station model diagram, the dew point is 

• 27 degrees Fahrenheit
• 25 degrees Fahrenheit
• 25 millibars
• 11 degrees Fahrenheit