【5th Grade Social Studies】Mastering Japan’s Landforms!
Hello everyone! Starting today, let’s explore the "landforms and characteristics of our country" together.
You might feel like "landforms" sounds a bit difficult, but don't worry!
Once you understand the shape of Japan—the place where we live—and its unique features, scenery during your travels and daily weather reports will become much more interesting.
1. Japan is a "Land of Mountains"! Secrets of our Land
If you look at the Japanese archipelago from above, you’ll notice something: "There are so many mountains!"
About 75% (three-quarters) of Japan’s land is made up of mountains and forests. There is only about 25% of flat land where people can actually live.
【Key Points】
・Japan is surrounded by the ocean (it is an island nation).
・Most of the land consists of mountains!
The Backbone of Japan: "Mountain Ranges"
Through the middle of Japan, there is a long chain of high mountains. These are called mountain ranges. In particular, the area in the center of Honshu where 3,000-meter-class peaks gather is known as the "Roof of Japan" (the Japanese Alps).
Imagine a giant folding screen inside a house. Thanks to this "mountain screen," the weather can be completely different between the Sea of Japan side and the Pacific Ocean side.
Fun Fact: The highest mountain in Japan is "Mount Fuji." Mount Fuji is also a "volcano."
2. Are Japanese rivers "impatient"?
Japanese rivers have a major characteristic that sets them apart from those in other countries: they have "steep currents and are short in length."
【Think with an Analogy!】
If a large river in another country (a continental river) is like flowing slowly down a "gentle slope," a Japanese river is more like "rushing down a flight of stairs." Some rivers even flow almost like "waterfalls."
This happens because the mountains are high and the distance to the sea is short.
【Common Mistakes】
× Japanese rivers are long and flow slowly.
○ Japanese rivers are short and have steep currents.
【Key Points】
・The longest river in Japan: Shinano River
・The river with the widest basin (the area where water collects): Tone River
3. Places where people live: "Plains" and "Basins"
Although Japan is mountainous, there is flat land spreading out at the lower reaches of rivers. This is called a plain. It is where many people live, and where rice fields and farms are found.
・Kanto Plain: The largest plain in Japan.
・Basin: A low-lying area surrounded by mountains, shaped like a tray (bon).
【Mini Summary】
Steep rivers flow out from the mountains and create flat land (plains) at their base. We live our lives making good use of that limited, flat land.
4. Jagged? Or Straight? Differences in Coastlines
Surrounded by the sea, Japan’s coastline changes shape depending on the region.
(1) Rias Coast
A coastline that is complex and jagged is called a Rias coast (e.g., the Sanriku Coast and Shima Peninsula).
・Because the waves tend to be calm, it is ideal for "aquaculture" (raising fish) and for building "harbors" to dock ships.
(2) Sandy Coast
A straight coastline covered in sand. You often see these at beaches used for swimming.
【Key Points】
・Jagged coastline ＝ Rias coast (perfect for harbors and aquaculture!)
5. Finally: Remember these!
It might feel like there is a lot to memorize at first, but let's start by mastering these three things!
① 75% of Japan is mountains!
② Rivers are "short and steep"!
③ There are jagged "Rias coasts" along the shoreline!
Try opening up your atlas and checking, "Is the place where I live a plain? Or are there mountains nearby?" It will make learning much more fun!
Next time, we’ll look at how these landforms influence our "climate" (weather). Great work today!