1. Where is Tornado Alley? AF1 - Drawing a choropleth map
AF3 - describe the distribution of tornadoes
AF4 -  explain the formation of a tornado

2. STARTER: Tornadoes are so good they have
made lots of films about them!
List the impacts of a tornado:

3. It is a choropleth map that shows the number of males
What is this type of map called? In which state is the greatest number of males compared to women? What is the data?
It is a choropleth map that shows the number of males
per 100 females.
The biggest
imbalance is in
Alaska with
men to 100
females

4. AF1: Create a choropleth map of tornado deaths in the USA,
Ohio 85
Oklahoma
113
Oregon 3
Pennsylvania 26
South Carolina 53
South Dakota 8
Tennessee 38
Texas
114
Utah 1
Virginia 13
Washington 6
West Virginia
100
Wisconsin
117
Wyoming 2*
State
Deaths
Alabama 72
Arizona 2
Arkansas 55
Colorado 10
Connecticut 34
Delaware
Florida 25
Georgia
203
Idaho
Illinois
613
Indiana 71
Iowa 92
Kansas 82
Kentucky 76
Louisiana 49
Maine 1
Maryland 16
Massachusetts 94
Michigan
115
Minnesota 72
Mississippi
317
Missouri
158
Montana 2
Nebraska
101
New Hampshire 6
New Jersey 5
New Mexico
New York 4
North Carolina 23
North Dakota 10
Create a key, no more than 4
colours, equal range, no white,
similar to
this example –
change the numbers

5. Use this map, ignore Alaska.
Describe the
distribution of deaths from
tornadoes.
Remember data, place names,
direction
Finally, draw
around the
states you
think form
Tornado
Alley.

6. Draw a line around or shade in the area of Tornado Alley and
add it to your key.
What is the source of the warm moist air pictured in green? Where is the warm dry air pictured in orange coming from? The blue?
Why do you think
there are a lot of
deaths in states like
Illinois and
Mississippi despite
being on the edge of
Tornado Alley?
Lack of prediction, preparation and planning
in these areas as they are focused on areas
with there is a high frequency of tornadoes.

7. Map Skills Test

8. Questions 1-10 (INDIVIDUAL WORK – NO TALKING)
1. What does DL stand for? _____________
2. Give the 4 figure grid reference for Oregon _ _ _ _
3. Give the 4 figure grid reference for Lake Michigan _ _ _ _
4. Give the 6 figure grid reference for ‘I’ of Iowa _ _ _ _ _ _
5. Give the 6 figure grid reference for Washington D.C. _ _ _ _ _ _
6. Which state is the furthest southeast? ____________
7. Which state is southwest of Montana? ____________
8. Which state is 1000 miles northwest of the centre of Tennessee? ___________
9. What is the area of Colorado? _________square miles
10. What is the shortest, straight line, distance you would travel to get from Mexico to the centre of Washington D.C.?____________ miles.

9. Answers – swap books Delaware 0022 0522 044238 067232 Florida Idaho
New York
Roughly 367 x 500 = square miles
5.5cm/1.5cm x 500miles = 1833 miles

10. Set a target… A: 9-10, B: 7-8, C: 5-6, D: 3-4, E: 1-2
Write their grade then the following;
WWW (what went well):
EBI (even better if):
Using a key
4 figure grid
references
6 figure grid
Direction
Scale

11.
Annotate your diagram with the information
from the link (above),
you have 1 minute per
slide to add information to explain how a tornado forms.
Aim to add connectives, such as, because and therefore to add detail.

12. Plenary: Describe what you would do and what you would have already done, knowing you live in a high risk area?