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Chapter 16
Sections 1 & 2
| Question | Answer |
|---|---|
| What two things affect an increase in humidity? | 1. Increase of water vapor in the air due to evaporations, and 2. Increase in temperature helps increase humidity. |
| What is the percentage of relative humidity if the air is saturated? | 100% |
| Relative humidity is expressed as a _________________ | Percentage |
| When does condensation occur? | Air has to be saturated with a relative humidity of 100%. |
| How are clouds formed? | Through the process of condensation. Warm air rises and cools into droplets. These droplets attach to dust particles. Droplets, dust particles, and ice crystals combine to form clouds. |
| Three types of Clouds. | Cumulus Stratus Cirrus |
| What does nimbus or nimbo attached to a cloud name indicate? | Some type of precipitation. |
| How are clouds classified? | By altitude and temp formation |
| What are the terms used to classify clouds based on altitude? | Low, Middle (alto), and High (Cirro) |
| What is the name for white puffy clouds that are high in the sky? | Cirrocumulus. |
| Four types of precipitation. | rain sleet show hail |
| Most common type of precipitation | Rain |
| What type of precipitation is freezing rain? | Sleet. |
| What type of precipitation is vapor that turns into ice? | Snow. |
| What falls from the sky as chunks of ice? | Hail. |
| How are air masses represented on maps? | Two letter symbol where the first lower case letter represent moisture content and second upper case letter represents temperature. |
| What are the four air masses? | Maritime Tropical Maritime Polar Continental Tropical Continental Polar |
| Parts or Descriptions of Maritime Tropical Air Masses. | Forms over Water (Gulf of Mexico/Atlantic Ocean) Low Pressure Warm Humid |
| Parts or Descriptions of Maritime Polar Air Masses. | Forms over Water (N. Pacific Ocean) High Pressure Cool Humid |
| Parts or Descriptions of Continental Tropical Air Masses. | Forms over Land (Mexico & SW U.S.) Low Pressure Warm Dry |
| Parts or Descriptions of Continental Polar Air Masses. | Forms over Land (Northern Canada) High Pressure Cool Dry |
| What is a Warm Front? | Warm air rises up over cold air mass resulting in showers and gentle rain. |
| What is a Cold Front? | Cold air mass sinks under warm air mass resulting in thunderstorms and heavy precipitation. |
| What is a Stationary Front? | A front that stalls and remains in one place resulting in precipitation for days. |
| What is an Occluded Front? | Forms when a warm air mass is caught between two colder air masses resulting in cooler temps, lots of rain and snow. |
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