Global
Climates and Seasons
Precipitation (
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to Lesson)
This
animation shows how global precipitation changes throughout the
year. Precipitation includes rain, snow, sleet, etc. First take
time to understand the map.
The
horizontal lines represent latitudes.
(Can you find the equator?)
The
color key at the bottom shows the range from very
little precipitation (on the left side) to lots
of precipitation (on the right side).
Try
to locate where you live (approximately).
The
first few times you look at the animation, look at precipitation
patterns on the entire globe. (Try starting in January.)
The
next few times through, look at precipitation patterns just in
North America.
Answer
the questions
below the map. You can review the animation as you try to answer
the questions.
Average
Precipitation Through the Year(Link
to full-size
map)
Questions
What
patterns do you notice? What general statements can you make about
global precipitation?
Which
areas/latitudes tend to have the most precipitation? The least?
What
happens to the rainiest bands throughout the year? (Look at Central
and South America.) Which direction(s) do they move?
Point
to a place in North America that you think might have a rainy
season and a dry season. Explain why you think so.
Point
to your migrating animal's winter and summer habitats. What does
this map tell you about the moisture conditions that it needs
to survive — or that it can survive in?