Physical Geography 101
Precipitation Study Guide


After the "Precipitation" lecture and readings you should be able to answer and discuss the following questions.

Define the term "precipitate".

How does precipitation form?

What is the average size of raindrops?

What is the maximum size that is possible for raindrops?

What is the difference between rain and snow?

At what temperature range (Celsius) do dendrites form?

If you step outside and see dendrites falling, what does this tell you?

What is sleet?

What is an ice storm?

What is hail?

How is precipitation measured?

What is the device used to measure precipitation?

How is snowfall officially measured and how is it measure for reporting to the public?

What are the three types of precipitation?

Describe the sequence of steps that lead to the formation of orographic precipitation.

Describe the sequence of steps that lead to the formation of convectional precipitation.

In both cases, what condition must be met in order for precipitation to occur?

What is the strongest form of convectional precipitation?

What additional phenomena often occur in this type of convectional precipitation?