#1364 What is continentality?

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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#1362 How do glow sticks work?

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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#1361 Soap or hand sanitizer?

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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#1359 What is Boots theory?

What is Boots theory? Boots theory is a theory that poor people have to buy low quality products that don’t last very long. This means they have to replace them often and end up spending more in the long run than they would have if they had been able to buy a more expensive product.

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#1358 What is escape velocity?

What is escape velocity? Escape velocity is the minimum speed an object needs for it to be able to escape the gravitational pull of a celestial body. Everything in the universe has gravity. Even dark matter has gravity, which is how astronomers know it is there even though they can’t see it. The gravity of

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#1356 How does sunscreen work?

How does sunscreen work? Sunscreen works by either reflecting the ultraviolet rays back up, or by absorbing the ultraviolet rays. When we go out into direct sunlight, we are coming into a lot of energy that the sun is sending our way. The sun releases energy as electromagnetic waves in a whole range of wavelengths.

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