#656 Are Inner and Outer Mongolia separate countries?
Watch on YouTube Are Inner and Outer Mongolia separate countries? Outer Mongolia is the country of Mongolia and Inner Mongolia is a part of China. Outer Mongolia is known as…
Watch on YouTube Are Inner and Outer Mongolia separate countries? Outer Mongolia is the country of Mongolia and Inner Mongolia is a part of China. Outer Mongolia is known as…
Watch on YouTube How was the meter (metre) defined? In 1791 it was defined as one ten-millionth of the distance from the equator to the North Pole. The word “meter”…
Watch on YouTube Why is the Grand Canyon so deep? Because of the power of the Colorado River, the amount of water in it, the arid climate, and the rocks…
Watch on YouTube What will happen at the end of the universe? There will either be a Big Crunch, a Big Bounce, a Big Rip, or a Big Freeze. The…
Watch on YouTube Why does blood show up under UV light? Because it absorbs all of the light and appears completely black. When we watch crime movies, the police often…
Watch on YouTube Why do stick insects look like plants? They have evolved to resemble the plants they live and feed on, in order not to be eaten by birds…
Watch on Youtube Why is 0 longitude in London? It was used by more than two-thirds of the world’s ships and the USA had decided to use it. The line…
Watch on YouTube How much wind does a wind turbine need? A wind speed of roughly 11 km/h. Wind power has been used for over 2000 years. The windmill was…
Watch this on YouTube When did cave paintings first appear? The oldest cave painting found so far is from 50,000 years ago but the oldest known prehistoric art was from…
How does a 3D printer work? There are four different methods of 3D printing. Fused deposition modeling, stereolithography, digital light processing, and selective laser sintering. 3D printing is becoming more…