Do other planets have tectonic plates? In our Solar System, Earth is the only planet with tectonic plates, but in other solar systems there will probably be planets the same as ours. Out of all the planets in the Solar System, Earth is the only one with tectonic plates. Neptune, Uranus, Saturn, and Jupiter are […]
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How are memories stored? The brain stores them by altering the connections between neurons. The brains of all organisms that have them are made up of neurons, in different amounts. Our brain has approximately 100 billion of them. A neuron is a nerve cell and it is made up of three parts. In the middle
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What is the difference between a frog and a toad? There are many differences between the two, although toads are actually a type of frog, which makes it a bit like asking what the difference between a dog and a Labrador is. So, let’s start from the top. Frogs and toads belong to the order
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What is a jungle? It is generally an area of dense forest in a tropical climate. Many people think a rainforest is a jungle but they are different because a rainforest is a specific ecosystem, and a jungle is a description of an overgrown and tangled forest. The word “jungle” has come into English from
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Is a force field possible? In theory, there are several possibilities, such as warping space time, electric fields, directional lasers, a controllable plasma, a magnetic field, and others. We have all seen science fiction movies where a spaceship is protected by a forcefield that destroys enemy fire when it comes into contact. The recent movie
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There are many reasons why bees swarm out of a hive. It could be climate change, disease, disturbances, lack of resources, or many other things. There are many different species of bees and many different types of colonies, but an average bee colony has about 50,000 worker bees, 100 drones, one queen, and lots of
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When was the first department store? It was most probably Harding, Howell & Co’s Grand Fashionable Magazine, which opened in 1796 in London. The first department store came about with the growing Industrial Revolution. Before then, rural towns would have a general store and maybe a market. Cities would have general stores and probably markets,
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Why do we have capital letters? Because the majority of the letters in the alphabet we use came from Latin. This question is actually the wrong way round. It should be asking why we have lowercase letters. The majority of our writing these days is done in lowercase with the occasional capital letter thrown in,
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What is the pH scale? It probably stands for potential of hydrogen and it shows how much hydrogen is in a substance. The pH scale is written with a capital H because the symbols for the elements are always written with a capital. However, when the scale was invented by a Danish chemist called Soren
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Why are bridges designed to move? Because they expand and contract, because the wind moves them, and because the land on either side of them moves. When you drive on and off a bridge, you may have noticed there is a slight gap at either end. This gap usually has a metal bracket on it
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