Explore matter, energy, chemistry and the physical laws that help explain everyday life. Choose an article below; its reading controls let you move between the available levels.
2,727 public articles · Page 43 of 57
Pushing on water moves it everywhere. If you push one side, the other side moves too. This helps lift heavy cars in shops. It makes hard work much easier. It is like magic! Do you want to try it?
Early Reader · Change the reading level on the articlePascual Jordan was a smart man. He studied how tiny things work. He wrote books about science. He also worked in politics. His work helped us learn about the world. Do you like science?
Early Reader · Change the reading level on the articleTiny things move in many ways. They do not take just one path. They try every way to go. This helps us see how they act. It is a big idea in science. Can you imagine moving every way at once?
Early Reader · Change the reading level on the articlePatrick was a smart man. He loved to study science. He found new things in tiny bits of matter. This work won him a big prize. He also wanted to help all people. Can you learn about science too?
Early Reader · Change the reading level on the articlePaul is a scientist. He helps our Earth. He makes safe things. This helps us stay healthy. He works very hard. Do you like science too?
Early Reader · Change the reading level on the articlePaul Flory was a smart man. He studied how tiny things work. He helped us learn about new materials. This work was very good. He even won a big prize. Do you like to learn new things?
Early Reader · Change the reading level on the articleTiny bits of stuff move in ways we cannot see. They spin like small tops. A man named Pauli found a way to show this. It helps us see how they work with magnets. It is very cool! Can you imagine tiny spinning bits?
Early Reader · Change the reading level on the articleSmall bits of stuff have a spin. It is like a tiny top. We use math to see how it spins. This helps us learn about the world. It is very cool! Do you like math?
Early Reader · Change the reading level on the articleA man found a blue light. It came from water. This light is very special. It helps us learn about tiny things. It is a big discovery. Do you like blue light?
Early Reader · Change the reading level on the articleSome tiny things stick to long lines. These parts hang off the side. They can make things hard or soft. This helps make the things we use. It is like a little charm on a chain. Do you see things like this?
Early Reader · Change the reading level on the articleA pennyweight is a way to weigh things. It helps people weigh gold. People who make rings use it. Dentists use it for teeth, too. It is a very small weight. Can you find something small to weigh?
Early Reader · Change the reading level on the articleScientists use a special map. This map shows space and time. It can fit a huge space on one page. It helps us see how light moves. We can look at black holes too. It is a neat way to see the stars. Do you like maps?
Early Reader · Change the reading level on the articleSpace has very strange spots. These spots are called singularities. They can be inside black holes. They can be at the start of our world. They are very small and heavy. Do you like space?
Early Reader · Change the reading level on the articleThis is a special glass shape. It helps move light. It can turn light around a corner. This helps you see photos in a camera. It makes the picture look right. Do you like taking pictures?
Early Reader · Change the reading level on the articleTiny bits make up everything. Some bits stay in groups of three. But some bits join in a group of five. This is a special group. It is very hard to find. Scientists found them! Can you imagine tiny bits joining together?
Early Reader · Change the reading level on the articleSome things help rockets fly. They can also make fireworks go pop. These things help things burn fast. They can even be in the soil on Mars. It is a very busy thing. Do you like fireworks?
Early Reader · Change the reading level on the articleThis is a very strong acid. It is clear like water. It helps make fuel for rockets. This helps us go to space. It is a powerful tool. Can you imagine a rocket? We use it to reach the stars.
Early Reader · Change the reading level on the articlePercy was a great scientist. He studied how plants work. He made medicine from plants. This helped many sick people. His work was very good. Do you like plants?
Early Reader · Change the reading level on the articleTiny parts move in a circle. They change to make something new. This happens all at once. It helps make things in our bodies. It is a neat way to change. Can you see the circle?
Early Reader · Change the reading level on the articleTwo tiny things start the list of all stuff. One is hydrogen. It is very light. The other is helium. It helps balloons float high. These two are found all over space. Do you like floating balloons?
Early Reader · Change the reading level on the articleSome things are made of tiny bits. These bits live in a row. They can be hard like a gem. They can be soft like black soot. These bits help make batteries work. Do you like to learn about bits?
Early Reader · Change the reading level on the articleThere are many tiny pieces in our world. Some pieces live in a row. Eight special pieces are in this row. They help make things like salt and sand. They help us every day. Can you find them?
Early Reader · Change the reading level on the articleMany things are made of tiny bits. These bits are called elements. Some help make your bones strong. Others make things like metal tools. We need them to live. Do you see them every day?
Early Reader · Change the reading level on the articleSome things are made of special parts. These parts are in a long row. Some parts are shiny like jewelry. Some parts help make strong steel. These parts are all around us. Can you find them?
Early Reader · Change the reading level on the articleMany things make up our world. Some are very special. Some are shiny like gold. Some can even be used in fireworks. These things are all part of a big group. They help us make new tools. Can you find them?
Early Reader · Change the reading level on the articleSome things are very heavy. These are special parts of our world. They are very rare. They can even glow blue. Most of them are made in labs. Do you like science?
Early Reader · Change the reading level on the articleTiny bits make up everything. They live in a big chart. The chart has patterns. These patterns help us learn. We can see how they work. It is like a map. Do you like patterns?
Early Reader · Change the reading level on the articleThe table has many rows. Each row is called a period. All things in a row are alike. They share the same parts. This helps us learn about them. Do you like science?
Early Reader · Change the reading level on the articleThis is a bright purple liquid. It can clean things. We use it to clean baths and sinks. It helps keep water safe too. It is very strong. Do you like the color purple?
Early Reader · Change the reading level on the articleSome things can hold a magnet's pull. This is how well they do it. Some things push a magnet away. Other things pull a magnet close. It helps us make tools. Can you find a magnet?
Early Reader · Change the reading level on the articleSome things hold onto energy. This can happen in air or in other stuff. It helps things work in tools. We use it to store power. It is very cool! Do you like to learn about power?
Early Reader · Change the reading level on the articleSome things are built like tiny blocks. These blocks have a special shape. They use three different parts. The parts fit together in a pattern. This pattern helps them work well. Can you find a pattern in your toys?
Early Reader · Change the reading level on the articleSome things have two oxygen atoms. They stay joined together. These parts are in many things. One kind is in a liquid. It is used in many ways. It is very interesting. Do you know this liquid?
Early Reader · Change the reading level on the articleSome people want a machine that never stops. It would move all by itself. It would not need any fuel. But such a machine is not possible. The rules of our world say no. We need energy to make things move. Can you…
Early Reader · Change the reading level on the articlePer Cleve was a smart man. He loved to study nature. He found new things in rocks. He also looked at tiny life in water. His work helps us learn about our world. Do you like to look at rocks?
Early Reader · Change the reading level on the articlePeter was a smart man. He studied how things work. He found a way to help computers. Now we can save much more on disks. His work helps us every day. Do you use a computer?
Early Reader · Change the reading level on the articlePeter Higgs was a smart man. He studied how the world works. He found out why things have weight. This helps us understand everything. He won a very big prize. Do you like to learn new things?
Early Reader · Change the reading level on the articleThis is a thick gel. It helps your skin. It can fix dry lips. It also stops dry skin. It keeps your skin soft. Do you use it?
Early Reader · Change the reading level on the articlePewter is a type of metal. It is made from tin. People use it to make pretty things. You can find it in small toys. It is very soft to touch. Do you like shiny things?
Early Reader · Change the reading level on the articleSome things stay in the world a long time. They are in many things we use. They can be in rain and water. These things can get into fish. Then we might eat the fish. We must be careful. Do you know what is in your water?
Early Reader · Change the reading level on the articleThings can be solid, liquid, or gas. Some things can be two at once. This can happen with heat or pressure. It helps us know how things change. Can you see ice melting? It turns from solid to liquid.
Early Reader · Change the reading level on the articleSome things do not stay mixed. Oil and water are like this. They pull apart into two parts. You can see this in a bowl. It happens on its own. Can you find this at home?
Early Reader · Change the reading level on the articleWaves move in a special way. A wave has a speed. This speed is how fast a wave part moves. It can move fast or slow. It helps us see how things travel. Can you see the waves move?
Early Reader · Change the reading level on the articleSome things move in a cycle. They go round and round. Think of a clock hand. It shows where you are in the turn. This helps us see the pattern. Can you see the pattern?
Early Reader · Change the reading level on the articlePeople make a strong glue. It can be used for many things. It makes billiard balls. It helps make wood stay strong. This glue is very tough. It stays hard even when hot. Do you see things made with glue?
Early Reader · Change the reading level on the articleSome liquids change color. This liquid can turn pink. It can also stay clear. It helps us see what is in a mix. This is very helpful for science. Can you imagine magic ink? It can change colors right before your eyes!
Early Reader · Change the reading level on the articleA phenomenon is a thing you see. It can be a bright flame. It can be a big storm. You can look at it and wonder. We can study these things. It is fun to watch the world. What do you see today?
Early Reader · Change the reading level on the articleOur bodies need a special kind of food. This food helps us grow. We find it in milk and eggs. It helps our brains work well. It is very good for us. Do you eat these foods?
Early Reader · Change the reading level on the article