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 44 of 57
Plants make many things. They use parts of themselves to grow. These parts help plants stay strong. They also make sweet smells. These smells help flowers. These things help plants live well. Do you like flower smells?
Early Reader · Change the reading level on the articlePhilipp was a man who studied light. He used glass tubes for his work. He found tiny bits of energy. He won a big prize for this. He was not always kind to others. Do you like to learn about light?
Early Reader · Change the reading level on the articlePhilip was a smart man. He studied how things work. He helped make computers better. This helps us every day. He won a big prize for his work. Do you like to learn new things?
Early Reader · Change the reading level on the articleSome liquids change color. We use special tools to see this. These tools show if a liquid is sour or soapy. This helps us learn about the liquid. It is like magic! Do you like colors?
Early Reader · Change the reading level on the articleTiny things shake in solids. They move like a wave. This shake is like a sound. It helps heat move. It helps power move. Do you feel things shake?
Early Reader · Change the reading level on the articleSome tiny parts help us grow. They help make our bones strong. They are in our teeth, too. They help plants grow in the dirt. We need them to be healthy. Do you eat healthy food?
Early Reader · Change the reading level on the articleThis is a special gas. It can catch fire. It smells like old fish. It can be bad for us. We must be very careful. Do you think it smells bad?
Early Reader · Change the reading level on the articleSome tiny bits help plants. They can fight bad mold. These bits are not plant food. They help in a different way. They keep crops safe and strong. Do you like looking at plants?
Early Reader · Change the reading level on the articleSome things glow in the dark. They soak up bright light. Then they let the light out slowly. This can be toys or stickers. It looks like magic! Do you have a glow toy?
Early Reader · Change the reading level on the articleWe see light in many ways. Our eyes see some colors better than others. For example, green light looks very bright to us. We use special tools to measure this light. This helps us make good lamps for our homes. Do…
Early Reader · Change the reading level on the articleTiny bits of light act like a gas. They push on things just like air. This light can come from warm walls. It helps us see how heat works. It is very cool to think about. Can you see light in your room?
Early Reader · Change the reading level on the articleSome things have tiny patterns. These patterns change light. They make colors on butterfly wings. They make gems shine. It can help us make fast computers. Do you see bright colors?
Early Reader · Change the reading level on the articlePeople make new things to play with light. These things have tiny parts. The parts are very small. They can hide things from view. This could be like magic! Can you imagine a magic cloak?
Early Reader · Change the reading level on the articleWe use light to do work. Light can send news. It can help us see. Light even helps doctors. It makes our world work. Do you like bright lights?
Early Reader · Change the reading level on the articleSome things in our world never change. These things stay the same everywhere. They help us measure how fast light moves. They also help us measure weight. These rules help us understand everything. Do you like to…
Early Reader · Change the reading level on the articleA thing is a real object. It takes up space. You can touch it or see it. It can be a rock or a car. It is not just a thought. What is your favorite thing?
Early Reader · Change the reading level on the articleLight moves in waves. These waves can bend. They can also bump into each other. This helps us see how light works. It is very cool to watch. Do you like to look at light?
Early Reader · Change the reading level on the articleYou can learn about things by looking. You can see if a toy is shiny. You can feel if it is hard. These facts help us know things. They help us learn about our world. Do you like to look at things?
Early Reader · Change the reading level on the articleWe can measure things. We can measure how heavy things are. We can measure how long they are. This helps us know the world. It helps us learn. Can you name something you can measure?
Early Reader · Change the reading level on the articleSome people study how the world works. They look at things like light and heat. They use math to find answers. This helps us build new things. It is a big job. Do you want to learn how things work?
Early Reader · Change the reading level on the articleA man named Aristotle wrote books. He wrote about nature. He looked at how things move. He wanted to know why things change. This helps us learn about our world. Do you like to learn about nature?
Early Reader · Change the reading level on the articleTeachers help us learn how things move. They show us how the world works. We can do tests with our hands. This helps us learn by doing. It is fun to find out why. Do you like to learn new things?
Early Reader · Change the reading level on the articleTiny things can stick to walls. They do not use glue. They use a very weak pull. This pull helps geckos climb up walls. It is a small but cool trick. Do you like climbing trees?
Early Reader · Change the reading level on the articleTiny bits of stuff stick together. They use special glue to hold. This glue helps make double bonds. It makes the bond strong. This helps things stay together. We are all made of these bits. Do you see things…
Early Reader · Change the reading level on the articlePierre was a man who loved science. He studied how things move. He also read old books to learn. He found out that people learned science long ago. This helps us learn today. Do you like to learn new things?
Early Reader · Change the reading level on the articlePierre was a smart man. He studied how things work. He learned about many kinds of matter. He won a very big prize for his work. This prize is called a Nobel Prize. He helped us learn a lot. Do you like to learn new…
Early Reader · Change the reading level on the articlePieter Zeeman was a man who loved science. He looked at light. He found how magnets change light. This helped us learn about tiny things. He won a very big prize. Do you like to look at light?
Early Reader · Change the reading level on the article{ "text": Some things make power when you squeeze them. This can happen with crystals. It can even happen with your bones! This power helps make sparks for a lighter. It also helps some guitars make sound. Can you…
Early Reader · Change the reading level on the articleSome plants have a special smell. This smell is in pine trees. It is also in herbs like sage. It helps keep bugs away. It can even help our minds. Can you smell a pine tree?
Early Reader · Change the reading level on the articleTiny bits make up our world. These bits help hold things together. They are very, very small. They help keep the center of an atom strong. This matters to everything! Can you imagine things so small?
Early Reader · Change the reading level on the articleWater can move through a tube. It stays inside the tube. The tube keeps the water in. This helps water get to you. It is like a path for water. Can you see water in a pipe?
Early Reader · Change the reading level on the articleTiny bits of light have energy. This energy comes in small packs. A man named Max Planck found this. It helps us learn how things work. It is a big part of our world. Can you see the light?
Early Reader · Change the reading level on the articleThings change color when they get hot. First, they look deep red. Then they turn orange and yellow. Next, they look white. At last, they look blue. This helps us see heat. Can you see the colors change?
Early Reader · Change the reading level on the articleTiny things move in small steps. They do not move in a smooth way. They jump from one spot to another. This helps us learn how the world works. It is a big, cool idea. Do you like to learn new things?
Early Reader · Change the reading level on the articleHot things give off light. The sun is very hot. It glows bright and yellow. Heat makes things glow. This helps us see. Can you feel the sun's heat?
Early Reader · Change the reading level on the articleA wave can move in a flat line. It looks like a flat sheet. This sheet moves through space. It can be light from a far star. This helps us see the world. Do you see waves in the water?
Early Reader · Change the reading level on the articleTiny bits of light can join back together. This happens in some lamps. It makes a little heat. It can happen fast. We see it when lights go out. Do you see the light fade?
Early Reader · Change the reading level on the articleTiny bits in metal move back and forth. They dance when light hits them. This dance makes things look shiny. It can even make colors in glass. This helps us see bright things. Do you like bright colors?
Early Reader · Change the reading level on the articleSome metals are very special. They are hard to find. They stay shiny for a long time. We use them in jewelry. We also use them in cars. They help our air stay clean. Do you like shiny things?
Early Reader · Change the reading level on the articleSome things flow through long tubes. It can be a gas or a liquid. The stuff moves in small groups. These groups move like little plugs. This helps us make things in a factory. It is a very neat way to work. Can you…
Early Reader · Change the reading level on the articleLong ago, people had ideas about atoms. An atom is a tiny part of everything. One man thought it was like a sweet treat. He thought small bits lived inside a big ball. It looked like fruit in a pudding. Do you want…
Early Reader · Change the reading level on the articleSome tiny bits can make power. They live inside big machines. They can also make big booms. These bits help us make heat. We must be very careful with them. Do you want to learn more?
Early Reader · Change the reading level on the articleSome things are in the air. One is nitrogen. It helps us live. Another is phosphorus. It is also needed for life. These things are all in one group. Do you like to breathe the air?
Early Reader · Change the reading level on the articleSome gases are made of air and other bits. One kind is called ammonia. It can smell very strong. Some of these gases can be bad for us. We must be careful with them. Do you like to learn about smells?
Early Reader · Change the reading level on the articleRules help us know how things move. You can move left or right. You can turn around in a circle. You can even move through time. These rules stay the same for us. Do you like to move around?
Early Reader · Change the reading level on the articleSome things look very small. We can think of them as tiny dots. They have no shape at all. This helps us learn how they move. It makes math easy to do. Can you find a tiny dot?
Early Reader · Change the reading level on the articleA tiny spot can be a source. It can send out light or heat. A star looks like a small dot. It can also send out sound. This helps us study the world. Can you find a small light?
Early Reader · Change the reading level on the articleSome liquids are thick. Some are thin. We use a name to measure them. This name helps us know how they flow. It is a way to talk about water. Do you like thick or thin liquids?
Early Reader · Change the reading level on the article