検索キーワード： "J" 科学・テクノロジー

All canyons are deep, steep valleys, but there is more to these landforms than meets the eye! Rivers form some canyons, while the movement of Earth's crust forms others. To get to the bottom of the Grand Canyon in Arizona, you'd have to travel more than a mile!

All valleys are long, low cuts in the earth, but there is more to these landforms than meets the eye! While rivers form most, glaciers and splits in the Earth's crust can form others. Some are at the bottom of the sea! Give beginning listeners all the need-to-know information about valleys, including their characteristics, how they form, and where they can be found around the world.

Madam C. J. Walker invented a line of African American hair products and cosmetics that led her to become the first self-made female millionaire.

Trapped into keeping a promise he didn't want to make, Herobrine finds himself again teaming up with a witch. Now facing a brand new enemy he's never met before, Herobrine must bring them down before they create the unspeakable...another version of him.