Category: Physics
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Why do Rivers flood?
People are shouting, “The water is rising. The river has reached the streets! Get to higher ground. It’s a flood!” A flood happens when water runs over land that is usually dry. Rivers most often flood. Normally, much of the rain that falls on land runs into the nearest river. Water from melting ice and…
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Where Rivers begin and end?
High on a mountain, snow melts. Some of the melted snow trickles down the mountainside, finding the easiest path. It is so narrow you could step across it. Another trickle of water bubbles out from under a rock from underground water called a spring. This trickle joins the melted snow, making a wider, faster-moving stream.…
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How ocean shapes the land?
The ocean shapes the land When water pokes its way into the land, it creates many different kinds of bodies of water and land areas. Here are some words used to describe such places. A bay is a place where a part of the ocean or a lake pokes into the land. Seen from an…
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Where the ocean meets land?
The ocean meets the land Often where the ocean touches the land, whether it’s the edge of a tiny island or the coast of a continent, there is a beach. A beach is a stretch of sand, pebbles, or rocks. The sea makes beaches. Waves crash into a rocky shore for thousands of years,…
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Why is the ocean salty?
You could be out in the middle of the ocean – surrounded by thousands of kilometres of water – and not have any water to drink when you’re thirsty. Why? Because ocean water is full of salt. If you did drink it, it would simply make you more thirsty. The ocean is salty because rivers…
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How the Moon can block the light from the big star?
In the event of a total solar eclipse, the Sun’s light is completely blocked by the Moon. But have you wondered how the Moon, which is about 400 times smaller than the Sun, can block the light from the big star? It’s a matter of distance The distance between the Earth and the Sun, and…
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What is an overhead kick in soccer?
Kinetic energy largely dominates the beautiful game of football as players cover a number of kilometres in a 90-minute game, in search of goals that separate the competing sides. But one of the more dramatic moments produced on the football field depends mainly on the potential energy of a player. Energy and forces The overhead…
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How can you find the parts of the world’s ocean?
The World’s Ocean Do you think the earth’s surface has more land or more water? Would you believe that most of the planet is covered with water? It’s true. The land we live on, even the giant continents, are really just like big islands in a huge ocean. Different parts of the ocean have different…
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What makes waves?
On a quiet day, you can hear the waves roll in and splash near the shore. On a stormy day, they thunder. Waves are made by wind blowing along the top of the water. The water seems to be moving forwards – but it only moves up and down. A cork floating on the water…
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What are glaciers?
All that ice A glacier is a large mass of ice that flows slowly over land in cold Polar Regions and high mountain valleys. Glaciers begin as snow on a mountaintop. As more snow falls, the weight of the new snow squeezes the snow already there. The snow on the bottom of the pile turns…