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 30 of 57
A man named Coriolis studied how things move. He worked with machines and water. He found out how things turn. His work helps us understand the world. His name is on the Eiffel Tower. Can you find it?
Early Reader · Change the reading level on the articleTiny bits of matter can move. They like to stay close. Usually, big bits stay far apart. But some bits stay near each other. This helps them stay steady. It is a neat trick! Can you see how they fit?
Early Reader · Change the reading level on the articleSome things have a tiny charge. This charge makes a field. The field moves out from the charge. It can go through a shape. We can use this to find the charge. It helps us learn about power. Can you see the field?
Early Reader · Change the reading level on the articleMagnets have two ends. One end is north. The other is south. They work as a pair. You cannot have just one end. They always stay together. Do you have a magnet?
Early Reader · Change the reading level on the articleWe use a special way to measure magnets. It is named after a man. This helps us know how strong a magnet is. It can even measure the Earth. A magnet on your fridge is strong too. Do you have magnets at home?
Early Reader · Change the reading level on the articleMachines sort tiny things by size. They use small beads with holes. Big bits move fast. Small bits get stuck in the holes. This helps us see what is inside. It is like a race! Can you find things by size?
Early Reader · Change the reading level on the articleSome tiny things can change shape. They can join with water. Then they turn into something else. This helps make new things. It is like magic! Do you like to see how things change?
Early Reader · Change the reading level on the articleRules of our world stay the same. They do not change if we look differently. You can move or turn around. The rules still work for you. This helps us learn how space works. It is a big idea! Can you think of a rule…
Early Reader · Change the reading level on the articleWe use numbers to show where things are. You can use an angle to show a swing. This makes math much easier. It helps us see how things move. Do you like to track how things move?
Early Reader · Change the reading level on the articleTiny bits make up everything. Some bits are very light. Other bits are much heavier. Most things use the light bits. This helps make our world. Do you like to learn?
Early Reader · Change the reading level on the articleSpace is not flat. It can bend and curve. Things fall in a path. This path is like a line. It helps things move. Can you see the curves?
Early Reader · Change the reading level on the articleGeoffrey Wilkinson loved science. He studied how things work. He found new ways to make things. He won a big prize for his work. His work helps us today. Do you like to learn new things?
Early Reader · Change the reading level on the articleLight moves in straight lines. It can bounce off a mirror. It can also bend through glass. This helps us see things clearly. It even makes rainbows! Can you see light bend?
Early Reader · Change the reading level on the articleSome people use a special way to measure. It makes hard math look easy. They use light to measure time. They use light to measure space too. This helps us learn about stars. It is a smart way to look at the world. Do…
Early Reader · Change the reading level on the articleGeorg Bednorz is a scientist. He studies how things work. He found a new way for power to move. This helps us use tools. He won a very big prize. Do you like to learn new things?
Early Reader · Change the reading level on the articleGeorg was a man who loved science. He studied how things work. He wrote many ideas in books. These books help us learn today. He was a very smart thinker. Do you like to write in books?
Early Reader · Change the reading level on the articleGeorge Smith was a smart man. He helped make new tools. These tools help us take pictures. He won a very big prize. He loved to sail on boats. Do you like to take photos?
Early Reader · Change the reading level on the articleGeorge was a smart man. He studied how small things move. He found that tiny bits act like waves. This helped us learn about our world. He won a big prize for this. Can you learn about science too?
Early Reader · Change the reading level on the articleGeorges Charpak was a smart man. He made new tools. These tools help us see tiny things. They even help doctors help people. He won a very big prize. Can you learn about him?
Early Reader · Change the reading level on the articleGérard Mourou is a smart man. He works with bright light. He helped make very strong light beams. These help doctors fix eyes. This work is very big. It helps many people. Do you like bright lights?
Early Reader · Change the reading level on the articleGerard is a man who loves science. He studies how the world works. He won a very big prize for his work. His ideas help us learn about space. He is a smart teacher. Do you like to learn new things?
Early Reader · Change the reading level on the articleGerd Binnig is a smart man. He made a new tool. This tool helps us see tiny things. It helps us learn about our world. He won a very big prize. Do you like to learn new things?
Early Reader · Change the reading level on the articleGermain was a smart man. He studied how things change. He looked at heat in science. This helped us learn more. He wrote books for students. He was a great teacher. Do you like to learn?
Early Reader · Change the reading level on the articleTiny bits of matter act like magnets. They spin and pull on things. We can measure how they pull. This helps us learn about our world. It is a big mystery. Do you like to learn about tiny things?
Early Reader · Change the reading level on the articleSmall pictures show us danger. They are on many bottles. Some show things that burn. Some show things that can pop. These help keep us safe. We can look and learn. Do you see any pictures?
Early Reader · Change the reading level on the articleSome energy is ready to work. It helps things change. This energy is very useful. It can make things move. It helps us do work. Can you find energy today?
Early Reader · Change the reading level on the articleGeoffrey Taylor loved science. He studied how air and water move. He even made a new anchor for boats. His work helps us learn about our world. He was a very smart man. Do you like to learn how things work?
Early Reader · Change the reading level on the articleGlenn Seaborg was a smart man. He found many new things. He found parts of the world we call elements. These help doctors help us. He even helped people stay well. Do you like to learn new things?
Early Reader · Change the reading level on the articleYou can see a bright halo. It looks like a colorful ring. It happens in clouds or mist. It stays near your shadow. It is a pretty sight! Can you find one?
Early Reader · Change the reading level on the articleThis is a tiny kind of food. It is sweet and clear. Our bodies use it to stay strong. It helps us turn food into power. It is a small part of a big job. Do you like sweet things?
Early Reader · Change the reading level on the articleGlycine is a tiny building block. It helps make things in your body. It helps make your skin and bones. It even tastes a little sweet. You get it from the food you eat. Do you want to learn more?
Early Reader · Change the reading level on the articleGold is a bright color. It looks like the shiny metal. Some gold is dark yellow. It can even be on flowers. Do you like this color?
Early Reader · Change the reading level on the articleThis tool measures liquid. It is tall and thin. It has lines on it. The lines show how much liquid is inside. It helps us be very careful. Do you like to measure things?
Early Reader · Change the reading level on the articleMetal is made of tiny bits. These bits join together. The lines where they meet are called boundaries. These lines can make metal strong. They can also change how heat moves. Do you see lines in metal?
Early Reader · Change the reading level on the articleTiny bits make up hard things. When things get hot, these bits grow. They move to get bigger. This can make things soft. It is very neat! Do you like to see things change?
Early Reader · Change the reading level on the articleA grain is a tiny weight. It is very small. It is like one seed. People use it to weigh things. It helps us know how much we have. Do you want to find one?
Early Reader · Change the reading level on the articleA gram is how we measure weight. It is very light. A small paper clip weighs about one gram. It helps us cook food. We use it at the store, too. Can you find something light like that?
Early Reader · Change the reading level on the articleSome things are heavy for their size. We can use a rule to measure this. Water has a score of one. This helps us know how things feel. It is a way to see how much stuff is in a space. Can you find something heavy?
Early Reader · Change the reading level on the articleSmall bits move in a box. They can go in or out. The bits can also change energy. This helps us learn about tiny things. It is like a busy room. Can you see the tiny bits moving?
Early Reader · Change the reading level on the articleTiny parts make up our world. They use different forces. Some scientists think these forces are one. They might have been one long ago. This could be a big secret. Do you like secrets?
Early Reader · Change the reading level on the articleBig nuts move to the top. They move when you shake them. Small bits fall under the big ones. This makes the big bits rise up. You might see this in your cereal. Have you seen big pieces on top?
Early Reader · Change the reading level on the articleThis is a tiny sheet. It is made of carbon. It looks like a honeycomb. It is very, very strong. It is the thinnest thing in the world. It can help make new tools. Can you imagine something so small?
Early Reader · Change the reading level on the articleWe can find out how much of a thing is in a mix. We do this by weighing it. It is very, very exact. This helps us learn about the world. It is like a math puzzle. Can you imagine weighing tiny things?
Early Reader · Change the reading level on the articleEverything pulls on everything else. This pull is called gravity. It tells us how strong the pull is. It helps us know how big things are. It is a very small pull. Can you feel the pull of the Earth?
Early Reader · Change the reading level on the articleBig things pull on other things. This pull is called gravity. It pulls you toward the ground. It keeps us safe on Earth. It is a very strong pull. Can you feel it?
Early Reader · Change the reading level on the articleBig things like Earth pull on us. This pull is called gravity. It works even far away in space. It helps keep us on the ground. It is a very strong force. Do you feel the pull of the Earth?
Early Reader · Change the reading level on the articleTime can move at different speeds. It moves slow near big things. It moves fast far away. Clocks high up run faster. This is a neat trick of space. Can you imagine that?
Early Reader · Change the reading level on the articleThings pull on each other. This pull is called gravity. We think tiny bits carry this pull. We do not know if they are real. They might be very small. Do you feel the pull of the Earth?
Early Reader · Change the reading level on the article