Why are diamonds so expensive? Because we believe they should be expensive, not because they are rare. We think that diamonds are expensive because they are rare, but they are not as rare as we think. Diamond is a structure made of carbon atoms that are arranged in a crystal structure. Diamond is one of […]
#336 Why are diamonds so expensive? Read More »
How do fossils form? They form when the bones of an animal are turned to mineral. A fossil forms when an animal dies in water or falls into water. This water is more commonly an ocean or a lake because for a fossil to form, the sediment at the bottom of the water has to
#333 How do fossils form? Read More »
Can we cover the Sahara Desert in solar panels? Technically, yes. Practically, no. The Sahara Desert is the largest hot desert in the world. It covers 9.2 million km2, which would make it the fifth largest country in the world, if it were a country. It is one of the most exposed areas on Earth
#330 Can we cover the Sahara Desert in solar panels? Read More »
How long has the Sahara been a desert? Possibly for 4.6 million years, but maybe as long as 7 million years., The Sahara goes through a 41,000-year cycle. The Sahara Desert is the largest hot desert on Earth. The largest deserts are actually the Antarctic and the Arctic deserts. The Sahara is 9.2 million square
#318 How long has the Sahara been a desert? Read More »
Where did the names of the continents come from? Generally, from Greek and Latin. There are seven continents and one continent that is almost completely underwater. In order of size, the continents are Asia, Africa, North America, South America, Antarctica, Europe, and Australia. The submerged eighth continent is Zealandia. The only part of Zealandia that
#313 Where did the names of the continents come from? Read More »
I learned this today. Why are some places more humid than others? It is because they are closer to a large, warm body of water, which causes warm winds and warm air can carry more water vapor than cold air. What is humidity? Humidity is the concentration of water vapor in the air. The air
#283 Why are some places more humid than others? Read More »
I learned this today. The Richter scale is a way of measuring the strength of an earthquake by looking at the height of its seismic wave. The Richter scale was developed in 1935 by Charles Francis Richter. He was an American physicist who was very interested in seismology. He came up with his system because
#256 What is the Richter scale? Read More »
I learned this today. The Sahara Desert has grown so big because the precession of the Earth’s axis as it rotates around the sun changes the location of the African monsoon. The Sahara Desert is 9.2 million square kilometers, which makes it bigger than every country except for Russia, Canada, China and the USA. The
#229 How did the Sahara Desert get so big? Read More »
I learned this today. The 1815 Mt. Tambora eruption lowered global temperatures and caused the Year Without a Summer. Mt. Tambora is a volcano on the island of Sumbawa, which is in Indonesia these days. At the time of the eruption, the islands were controlled by the Dutch. The eruption reshaped the island and decimated
#199 What effect did the 1815 Mt. Tambora eruption have? Read More »
I learned this today. New Delhi became the capital of India in 1911 because the previous capital Kolkata had become too politically unstable, and it was too far from the center of India to be an effective capital. India has an extremely long history and people first lived there 55,000 years ago. Over the millennia,
#174 How did New Delhi become the capital of India? Read More »
