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Temperature Ranges by Seasons and Climates

Lesson Transcript
Instructor: Julie Zundel

Julie has taught high school Zoology, Biology, Physical Science and Chem Tech. She has a Bachelor of Science in Biology and a Master of Education.

The changes in seasons and climates are the major factors that affect the temperature ranges of a region. Learn about temperature ranges, review the definition of climate, and explore different climates such as the tundra, arid, tropical, and temperate climates. Updated: 11/10/2021

Temperature Scale

Sammy Celsius is here to help you learn about climates and temperatures throughout the world. But why Sammy Celsius? Why not Frankie Fahrenheit? Well, most of the world uses the Celsius temperature scale. I know, I know, the United States uses Fahrenheit, but scientists, even those in the United States, primarily use Celsius, so we're going to use that scale in this lesson.

It may take some time to get used to Celsius, but it's actually quite simple compared to Fahrenheit. For example, 100 degrees C and 0 degrees C are boiling and freezing; both of those are easier to remember than the Fahrenheit scale of 212 degrees for boiling and 32 degrees for freezing. Sorry, Frankie Fahrenheit. So, in addition to remembering the boiling and freezing points in Celsius, try to remember that room temperature is about 20 degrees C; just so you have some points of reference.

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  • 1:00 Climate
  • 1:56 Tundra
  • 3:16 Arid
  • 4:24 Tropical
  • 5:17 Temperate
  • 6:45 Lesson Summary
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Climate Defined

The word 'climate' gets thrown around a lot, and it's often used in place of other words like 'temperature' and 'weather.' Since this lesson is going to be focusing on climate and temperature, it's worth taking a moment to get some definitions under our belt. Weather is what you observe occurring in the atmosphere that may be rain, snow, or clouds. Climate refers to the patterns of weather that have been observed for a long time. In order to examine climate, one must follow the weather patterns and seasons over many, many years. Finally, temperature refers to how much heat energy is contained in a substance and can be measured using a thermometer, like Sammy.

In order to get a better idea of weather, climate, and temperature, we're going to explore four different climates: tundra, arid, tropical, and temperate. Of course, these different climates can go by other names, and these four do not represent all of the climates that can be found on Earth.

Tundra

The first climate we're going to examine is the tundra, or the climate that is characterized by cold temperatures, limited precipitation, and areas of permafrost, or permanently frozen ground.

There are two types of tundra: arctic and alpine. But we are going to focus on arctic, which can be found surrounding the North Pole. You might not be familiar with arctic tundra, but it actually makes up 20% of the Earth's surface.

Since we have Sammy here, let's talk about the temperatures found in the tundra, which vary dramatically depending on the season. Unlike latitudes that are further south, the tundra climate is characterized by two seasons: summer and winter. Although there are spring and fall seasons, they're extremely short.

Due to its proximity to the North Pole, the winters are dark and cold with average temperatures of -34 degrees C. Wow! -34 as an average! Yikes! I'd hate to see a cold day! Summers, on the other hand, have almost constant daylight and temperatures ranging from 3-12 degrees C.

The weather patterns vary depending on the season, but it's often dry and windy. In fact, tundra is often referred to as a cold desert. I don't know about you, but Sammy is getting cold, so let's head south to a different climate.

Arid

Almost 33% of the Earth's land is considered an arid climate. Typically, an arid climate is found in a desert, and, unlike the tundra climate, arid climates are found slightly north or south of the equator. Since they are located so far apart, you might not think the tundra and the arid climates share many similarities, but they actually do! Like the tundra, an arid climate doesn't have the typical spring, summer, fall, and winter seasons. Instead, there is usually just a summer and a winter.

In addition, both areas receive little precipitation. In fact, arid climates are defined as areas that receive less than ten inches of precipitation per year.

Let's grab Sammy to look at the temperatures in the arid climate. It probably doesn't shock you that, on the warm end, temperatures can reach upwards of 55 degrees C, but you may be surprised to learn that temperatures can plummet to -34 degrees C. Of course the cold temperatures coincide with arid climates that are further away from the equator. Typically, arid climates occur 30 degrees north or south of the equator, but they can occur further north or south.

Tropical

Tropical climates are located near the equator. In fact, this climate can be found 15 to 25 degrees north and south of the equator, and they make up 6 to 7% of the Earth's surface. They are also characterized by heavy precipitation. For example, they average 400 inches per year! Whoa! Better put on a raincoat, Sammy. Speaking of which, what does the temperature look like here, Sammy? Okay, it looks like the average temperature is 21 to 30 degrees C. Hey, that's near room temperature! If it wasn't so wet, this place would be great!

And, like the other climates we've touched on, the tropical climates don't have the typical seasons. In fact, due to the proximity to the equator, the temperature and length of day remains fairly constant throughout the year. Okay, it looks like we have time to visit one more climate.

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