Mini Lesson

Tropical Cyclone Counts Bar/Column Chart

Mini Lesson

Tropical cyclones are sometimes called hurricanes or typhoons. Some areas of the world have more tropical cyclones than others. The number of tropical cyclones from 1842 - 2018 is shown on the map below.

In this lesson, we will study the map to identify patterns of tropical cyclones, then use these findings to help us analyze a type of graph called a bar/column chart.

Tropical Cyclone Map

Section A: Identify Patterns of Tropical Cyclones on the Map

  1. Looking at the above map of tropical cyclone data, which color shows areas with the least hurricanes? Which color values on the map show areas with the most hurricanes?
  2. On the blank map below, draw a box around the area between 60°- 65° East and 10° - 20° North.

Blank World Map

Section B: Analyze the “Number of Tropical Cyclones by Latitude” bar chart and answer questions below. 

(Notice, the orange bars represent the amount of hurricanes at 60° East for the latitudes between 10° North and 20° North. The blue bars represent the number of hurricanes at 65° East for the latitudes between 10° North and 20° North.)

Tropical Cyclones Bar/Column Chart

  1. What was the total number of tropical cyclones at each latitude between 60° and 65° East?
  2. Which latitude had the highest number of tropical cyclones between 60° and 65° East?
  3. How many more tropical cyclones were at 14° N than at 15° N between 60° and 65° East?
  4. How many fewer tropical cyclones were at 11° N than at 10° N between 60° and 65° East?

Teacher Note

Teachers who are interested in receiving the answer key, please contact MND from your school email address at larc-mynasadata@mail.nasa.gov.

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