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 10 of 57
We use our eyes to see things. We can also use tools. Some tools help us see tiny things. Other tools help us see far away. Tools help us learn new things. Do you like to look at things?
Early Reader · Change the reading level on the articleSome things slow down electricity. This is called resistance. We use the ohm to measure it. It helps us use tools. It keeps things safe. Do you like to learn about power?
Early Reader · Change the reading level on the articleElectricity moves through wires. It flows like water in a pipe. Some things make it hard to move. This is called resistance. It helps us use power safely. Can you find things that use power?
Early Reader · Change the reading level on the articleOil is a smooth liquid. It does not mix with water. We use it to cook food. It can also help machines run. Many kinds of oil are helpful. Can you find oil in your kitchen?
Early Reader · Change the reading level on the articleMen used tiny oil drops to learn. These drops fell through the air. They used power to move them. This helped them find a tiny part of our world. It was a big discovery! Can you imagine tiny drops moving like that?
Early Reader · Change the reading level on the articleOrange is a bright color. It is between red and yellow. Many fruits are this color. Carrots and pumpkins are orange too. It is a happy color. Do you like orange?
Early Reader · Change the reading level on the articleSome things are made of carbon. These things help all living things. Plants and animals need them to grow. They are part of you! Can you find something living today?
Early Reader · Change the reading level on the articleSome things join metal and carbon. These parts stick together. They help make new things. They help make medicine and plastic. This helps us every day. Can you find metal in your house?
Early Reader · Change the reading level on the articleSome things use a part called phosphorus. These things help us in many ways. They can stop bugs from eating plants. They can even help make oil for cars. Some of them can be bad for people. We must be very careful.…
Early Reader · Change the reading level on the articleSome things use silicon and carbon. These help make glue. They help make sealants for homes. They are used in many things. Do you see them in your house?
Early Reader · Change the reading level on the articleSome things have a special part called sulfur. It can smell very bad. It can also taste very sweet. This part helps keep us healthy. It is even in our food! Can you find it in your lunch?
Early Reader · Change the reading level on the articleSome things move back and forth. A swing goes back and forth. A heart beats in your chest. This move can be fast or slow. It happens in many ways. Can you find something that moves like this?
Early Reader · Change the reading level on the articleOsmium is a blue metal. It is very heavy. It is also very hard. People use it to make pens. It helps the pens last a long time. Do you like to write with pens?
Early Reader · Change the reading level on the articleOtto Hahn was a scientist. He studied how things work. He found new things in small bits of matter. This helps us make power today. He was a very smart man. Do you like to learn new things?
Early Reader · Change the reading level on the articleAn ounce is a way to weigh things. It helps us know how heavy something is. We use it for food. It is also used for gold. It is a very helpful tool. Do you like to weigh things?
Early Reader · Change the reading level on the articleMany things are made of oxides. They are made of air and other things. Most of the ground is made of them. They can be hard or soft. They help make the world. Can you find one?
Early Reader · Change the reading level on the articleOzone is a special gas in the air. It stays high up in the sky. It helps keep us safe from the sun. This gas is very good for us. Can you feel the sun on your skin?
Early Reader · Change the reading level on the articlePalladium is a special metal. It looks like shiny silver. This metal helps clean the air from cars. It is used in jewelry too. It is very rare to find. Do you like shiny things?
Early Reader · Change the reading level on the articleThings look different when you move. You can see this with your eyes. It helps you know how far things are. It works for stars too. It is very cool! Can you see it move?
Early Reader · Change the reading level on the articleA particle is a tiny part. It can be very small. It can even be big like sand. These parts make up everything. They help make the world. Can you find tiny parts around you?
Early Reader · Change the reading level on the articleA machine makes tiny bits go fast. It uses power to push them. These bits move in a straight line. This helps doctors treat sick people. It also helps us learn about space. Do you want to go fast?
Early Reader · Change the reading level on the articleSpecial tools find tiny things. They can see small bits of light. These bits move very fast. The tools help us learn. They show us how things work. Can you imagine seeing them?
Early Reader · Change the reading level on the articleWe use a special way to measure push. It is named after a man. This helps us know how air pushes. It can also measure how loud sounds are. This helps us understand our world. Can you feel the air push on you?
Early Reader · Change the reading level on the articleThe past is what happened before. It is all the things from long ago. We can remember things in our minds. We can also read about them. This helps us learn. Do you like to remember things?
Early Reader · Change the reading level on the articlePaul Dirac was a smart man. He studied how tiny things work. He found new ways to look at the world. His work helps us learn about space. He was a great thinker. Do you like to learn new things?
Early Reader · Change the reading level on the articleTiny bits make up everything. These bits cannot be in the same spot. They must stay apart. This helps make our world stay solid. It is a very big rule. Do you like to play with tiny things?
Early Reader · Change the reading level on the articleA weight hangs from a string. It can swing back and forth. It swings because of gravity. This helps us tell time. Old clocks used them. Can you see a swing?
Early Reader · Change the reading level on the articlePeter Debye was a smart man. He studied how tiny things work. He found new ways to learn about them. His work helps us understand the world. He loved to fish and garden. Do you like to learn new things?
Early Reader · Change the reading level on the articleSome liquids are sour. Others feel slippery. We use a scale to check them. It tells us if a liquid is a base or an acid. This helps us stay safe. Do you like sour juice?
Early Reader · Change the reading level on the articleCharts show how things change. They show if things are hard or soft. They show if things are liquid. They show if things are gas. This helps us know what will happen. Can you see the lines?
Early Reader · Change the reading level on the articleThings can look different. Ice is hard. Water is wet. Air is all around us. These are all different parts. They can stay separate. Like oil and water. Can you find them? Look for them in your home!
Early Reader · Change the reading level on the articleThings can change their shape. Water can be hard ice. It can be wet liquid. It can even be gas. Heat or cold makes this happen. It is very cool! Do you see things change?
Early Reader · Change the reading level on the articleA man named Isaac Newton wrote a big book. It tells us how things move. It explains why planets stay in space. This book helps us learn about the world. It is very special. Do you like to learn about space?
Early Reader · Change the reading level on the articleSome things help us grow. This helps plants grow big. It is also in our bones. It helps us stay strong. It is a tiny part of life. Do you want to learn more?
Early Reader · Change the reading level on the articleLight can change things. It can help plants make food. Sunlight helps us make vitamin D. Light can also break things like plastic. It is very powerful. Do you like the sun?
Early Reader · Change the reading level on the articleLight can move tiny bits. These bits live in metal. When light hits the metal, the bits pop out. This helps machines see light. It is very cool! Do you like bright light?
Early Reader · Change the reading level on the articleScientists have a big plan for how things work. It does not tell us everything. It does not explain how things pull on each other. It misses some parts of our world. We want to find the rest! Can you help us look?
Early Reader · Change the reading level on the articlePierre Curie was a smart man. He studied how things work. He and his wife found new things. They won a big prize for their work. His work helps us learn today. Do you like to learn new things?
Early Reader · Change the reading level on the articlePink is a light red color. It is the color of many flowers. Some flowers have pink edges. You can see pink in the sky at sunset. It looks very pretty. Do you like the color pink?
Early Reader · Change the reading level on the articleSome ways to measure are special. They use rules from nature. These rules never change. They help us study space. They help us study tiny things. Can you imagine measuring the world this way?
Early Reader · Change the reading level on the articleSome things change shape. You can bend metal. It stays in the new shape. This helps us make tools. It helps us make things. Can you bend a spoon?
Early Reader · Change the reading level on the articlePlatinum is a shiny metal. It looks like silver. It is very hard to find. This metal helps make jewelry. It can also help doctors. It is very special. Do you like shiny things?
Early Reader · Change the reading level on the articleThis is a special metal. It looks like shiny silver. It can feel warm to your hand. This metal helps power ships in space. It is very strong. Can you imagine a warm metal?
Early Reader · Change the reading level on the articleLight moves in waves. These waves can shake in many ways. Some waves move up and down. Some waves move in a circle. We can use special tools to pick one way. This helps us see things better. Do you like to see how…
Early Reader · Change the reading level on the articleSome special glass helps us see. It stops bright light from bouncing. This helps you see through windows. It is in your sunglasses too. It makes things look clear. Can you find some sunglasses?
Early Reader · Change the reading level on the articleThis is a rare metal. It is very hard to find. It can glow blue in the air. It is not safe for people. We use it in space tools. Do you want to learn more?
Early Reader · Change the reading level on the articlePolyester is a strong material. It is used to make clothes. It can also make bottles. It does not shrink in the wash. This helps your clothes stay nice. Do you wear polyester?
Early Reader · Change the reading level on the articleThis is a type of plastic. It is used for many things. We use it for bags and bottles. It helps us hold our food. It is all around us. Do you see any plastic today?
Early Reader · Change the reading level on the article