Learn to Tell The Temperature Using Cricket Chirps

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Learning to tell the temperature outside without a thermometer is a very valuable life skill, and is reasonably easy to calculate.

In keeping with the Outdoor Bill of Rights, this activity reflects the right of children to sleep under the stars.

There is a very simple formula when calculating the temperature, as long as you can hear the crickets outside chirping.

This formula is as follows:

# of chirps heard in a span of 14 seconds + 40degrees = Temperature in Fahrenheit

That is, if you hear 33 chirps in 14 seconds, the temperature is 73 degrees Fahrenheit.

(33 + 40 = 77)

You can also use a similar formula to convert chirps to Celsius.

For Celsius, you need to count the chirps for 25 seconds. For the sake of this formula, we will call the number you count X.

Using X, the formula is:

(X Chirps / 3) + 4 = Temperature in Celsius

That is, if you hear 33 chirps in 25 seconds, the temperature is 15 degrees Celsius.

(33/3) + 4 = 15

The only trick to this is singling out ONE cricket from the many that might be chirping.

You can further the learning of this lesson by teaching your students how to convert from Celsius to Fahrenheit using the formula:

Celsius to Fahrenheit: Deduct 32, then multiply by 5, then divide by 9

Fahrenheit to Celsius: Multiply by 9, then divide by 5, then add 32

You can test the accuracy of the temperatures they get to how their formulas counting cricket chirps turned out.

This activity is a great way to get your kids to learn outdoors and use nature.

Sammy the Sturgeon's Get Outdoors & Buckle Up in Your Truck Program developed and maintained in conjunction with:
Tennessee Tech UniversityTennessee Wildlife Resources AgencyGovernor's Highway Safety OfficeTennessee Department of SafetyTennessee Coordinated School Health