Why are bubbles round? Bubbles are round because the liquid they are made of is naturally trying to make the smallest area it possibly can, and that is a sphere. A bubble is made when a liquid encloses a gas. If you are making soap bubbles, then that gas is the air. If you are […]
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What causes color blindness? Color blindness is a genetic condition where the color sensing cones in the eye don’t function correctly. People with color blindness can see colors, but they cannot differentiate between some colors. The cause of color blindness comes down to the cones in our eyes because they are what detect color. At
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How do ball bearings reduce friction? They reduce friction by turning sliding motion into rolling motion. If you have ever used a fidget spinner, you know that once you give it a spin and let go, it will keep spinning for far longer than you would expect. This is all down to the ball bearings
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What is the conservation of energy? Conservation of energy is the principle behind the First Law of Thermodynamics. The Law of Conservation of Energy says that you can change the state of energy, but energy can never be created and energy can never be destroyed. Before we look at this question, I think we need
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What do enzymes do? Enzymes are proteins that start and speed up chemical reactions in the body. Without enzymes, we could not survive. Without them, our digestion, respiration, and even muscles and nerves would not be able to function fast enough for us to live. There is no exact number for how many enzymes there
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What is the fizz in fizzy drinks? The fizz in fizzy drinks comes from carbon dioxide, which is why the process is called carbonation, and they are called carbonated beverages. A lot of drinks have a natural fizz. Beer has fizz and bubbles because it is made with yeast. The yeast eats sugar and releases
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What is continentality? Continentality is the condition of being in the center of a large landmass, which makes summers much hotter and winters much colder than other places. Anybody who lives in the center of a large landmass will notice that the temperatures in the summer are higher and the temperatures in the winter are
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How do the phases of the moon happen? The phases of the moon happen because only one side of the moon faces the Earth at any one time and as the moon rotates we can’t see the lit side. This question was surprisingly difficult for me to get my head around. For the longest time,
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How do glow sticks work? Glow sticks work because some chemical reactions can produce photons of light. The process is called chemiluminescence and several animals and insects use it to produce light. You can buy glow sticks from a lot of stores and they are not very expensive. They are usually a tube that is
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Soap or hand sanitizer? Soap removes germs and bacteria by killing and then washing them away, while hand sanitizer kills them. Soap and hand sanitizer deal with bacteria and things like that in different ways. One of them is more successful than the other. Let’s have a look at them both. How does soap remove
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