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 55 of 57
Try Science Lab activities about forces and motion, light, sound and electricity or matter and chemistry.
Some tiny rocks grow in odd shapes. They do not have straight sides. The sides are not the same length. They do not have flat mirror sides. These rocks look very special. Can you find a cool rock?
Early Reader · Change the reading level on the articleThis is a very strong acid. It is a clear liquid. It helps scientists do work. It can help make fuel for cars. This liquid must be used with care. Do you like to learn about science?
Early Reader · Change the reading level on the articleSome tiny things make a flat shape. They look like a flat triangle. One part sits in the middle. Three parts sit on the corners. This shape stays flat like a sheet. It is fun to see! Can you find a triangle?
Early Reader · Change the reading level on the articleSome tiny things look like a small hill. They have one part at the top. Three parts sit at the bottom. This shape is like a three-sided pyramid. It helps us learn how things fit. Can you see the shape?
Early Reader · Change the reading level on the articleStars make new things. They take tiny bits to make carbon. This carbon is in us! It happens when stars get very hot. The heat helps the bits join together. Do you like to learn about stars?
Early Reader · Change the reading level on the articleSome tiny bits hold hands very tight. They use three lines to stay close. This makes them very strong. This helps them stay together. It is like a super grip. Can you find things that stick together?
Early Reader · Change the reading level on the articleThe air has oxygen in it. It is all around us. It can even move near a magnet. This helps us know it is there. It is a very cool thing. Can you feel the air?
Early Reader · Change the reading level on the articleThis is a special salt. It can taste a bit tart. It helps make cheese melt well. It is also in some drinks. It helps keep food fresh. Do you like tart treats?
Early Reader · Change the reading level on the articleThis is a white powder. It can help clean things. It can even be in food. It helps make walls ready for paint. It is used to wash grease away. Do you like to help clean?
Early Reader · Change the reading level on the articleThis is a special kind of water. It is very heavy. It can help us learn things. It can tell us how old water is. We must be careful with it. Do you want to learn more?
Early Reader · Change the reading level on the articleSome gas glows in the dark. It is very rare. We can use it in watches. It helps them shine at night. It is a tiny bit of magic. Do you like things that glow?
Early Reader · Change the reading level on the articleSome things have common names. People use these names every day. They are easy to say. They help us talk about science. Do you know a common name? It is fun to learn new names!
Early Reader · Change the reading level on the articlePeople use a special way to weigh gold. It is called a troy ounce. This helps people trade shiny metals. It is used for gold and silver. We use it to be very fair. Do you like shiny gold?
Early Reader · Change the reading level on the articleSome things are very hard. This gray powder is very strong. It can be made into tools. These tools help cut metal. It can even be used in jewelry. Do you like strong things?
Early Reader · Change the reading level on the articleTurpentine comes from pine trees. It is a thick liquid. It helps thin out paint. It can also make things smell clean. We use it to help make things. Do you like the smell of pine trees?
Early Reader · Change the reading level on the articleImagine two twins. One goes on a fast space trip. The other stays on Earth. When the traveler comes home, they are younger. The twin on Earth grew more. Time moves differently in space. Does that sound silly to you?
Early Reader · Change the reading level on the articleTwo big things can move in space. They pull on each other. They go in circles. This helps us know where stars go. It helps us see planets too. It is like a dance. Can you see them move?
Early Reader · Change the reading level on the articleSome metals can act like magic. They can float above a magnet. This happens in a special way. The metal can even trap a magnet's pull. This helps us make big machines. Do you want to see them float?
Early Reader · Change the reading level on the articleSome metals can act in a special way. They can push away magnets. This happens when they are very cold. If a magnet gets too strong, the magic stops. This helps us learn about how things work. Do you like magnets?
Early Reader · Change the reading level on the articleSpecial lights help us see tiny things. These lights flash very fast. They can see how small bits move. It is like a fast camera. This helps us learn about our world. Do you like fast things?
Early Reader · Change the reading level on the articleLight can come in many ways. Old ideas about light were wrong. They thought light would have too much power. This would be a big mess! A man named Max Planck found the truth. Now we know how light works. Do you like…
Early Reader · Change the reading level on the articleA special tool uses light to see things. It shines light through a sample. The light tells us what is inside. This helps us learn about tiny bits of stuff. It is like a magic flashlight. Can you see the colors?
Early Reader · Change the reading level on the articleUmber is a brown color. It comes from the earth. People used it long ago. It helps make dark shadows. Artists use it to paint. Do you like brown?
Early Reader · Change the reading level on the articleScientists look for a new thing. It is a tiny piece of matter. We have not found it yet. It might be in the world. We want to find it. Can you help us look?
Early Reader · Change the reading level on the articleScientists look for a new thing. It is not here yet. It might be in a special place. Some think it stays still for a long time. We want to find it. Do you want to help us look?
Early Reader · Change the reading level on the articleScientists want to find a new thing. It is not found yet. It might be very special. It could stay still for a short time. We hope to see it soon. Do you like science?
Early Reader · Change the reading level on the articleScientists want to find a new part of our world. It is called element 121. We have not made it yet. It might be very hard to find. It could be a big discovery! Can you imagine finding something new?
Early Reader · Change the reading level on the articleNature has many forces. Some pull us down. Some work in tiny bits. We want one big rule. This rule would explain it all. It would be like magic. Can you find it?
Early Reader · Change the reading level on the articleSmall things change over time. We use math to see how. Sometimes the math is hard. We can change how we look at it. This makes the math easy. Then we can see the truth. Can you see how things move?
Early Reader · Change the reading level on the articleTiny parts make up a big shape. These parts repeat over and over. They fit together like blocks. This helps us see how things are built. It is like a pattern. Can you find patterns in your room?
Early Reader · Change the reading level on the articleScientists want to find a new thing. It is a tiny piece of matter. It is not found in nature yet. We hope to make it in a lab. It would be a big discovery! Do you like science?
Early Reader · Change the reading level on the articleTiny bits make up everything. These bits are very small. They help build the center of atoms. You are made of these bits! They are all around us. Can you find them?
Early Reader · Change the reading level on the articleSome rocks have a special part. This part can make heat. It makes power for us. This power helps us. It is very strong. Can you imagine that? It is amazing!
Early Reader · Change the reading level on the articleThis is a special kind of rock. It is found deep in the Earth. It stays warm inside our ground. It helps us know how old rocks are. It is very old! Can you find a rock?
Early Reader · Change the reading level on the articleThis is a white solid. It is used for power. It helps make fuel. This fuel makes energy for us. We must keep it safe. Can you see the white shape?
Early Reader · Change the reading level on the articleWe can tell how old rocks are. Some rocks have tiny bits inside. These bits change over a long time. This helps us find the age. It is like a clock. Can you find a rock?
Early Reader · Change the reading level on the articlePower moves in waves. The waves move fast. Some places use fast waves. Other places use slow waves. This helps our lights work. It helps our tools run. Do you see lights at home?
Early Reader · Change the reading level on the articleSmall things make up all solid things. Sometimes a tiny part is missing. This is a small gap. It can happen in many things. These gaps help parts move. Do you see gaps in things?
Early Reader · Change the reading level on the articleWe can clean liquids in a special way. We use less air to make things boil. This helps us save time and heat. It also keeps the liquids safe. It is like magic! Do you want to see how it works?
Early Reader · Change the reading level on the articleSpace is not truly empty. It has a tiny bit of energy. This energy is everywhere in the universe. It helps make things happen. It is a big secret of space. Can you imagine it?
Early Reader · Change the reading level on the articleSome things help magnets work. This helps pull and push. It is in the empty space. It helps us use power. It is a big part of our world. Do you like magnets?
Early Reader · Change the reading level on the articleSpace is mostly empty. It has a special rule. This rule helps electricity move. It helps tiny bits push each other. This rule is everywhere in space. Can you feel the push?
Early Reader · Change the reading level on the articleSmall bits move in things like metal. These bits can carry power. Some things let them move fast. Some things make them stop. This helps us use tools. Can you see things that use power?
Early Reader · Change the reading level on the articleVal Fitch was a smart man. He studied how tiny things work. He found out why we are here. His work won a big prize. He helped us learn about the world. Do you like to learn new things?
Early Reader · Change the reading level on the articleSome tiny bits are made of metal. These bits can change color. They can look orange or red. They can even look yellow. These parts are very small. You cannot see them with your eyes. Can you imagine such tiny things?
Early Reader · Change the reading level on the articleScientists use a special rule. It helps them sort things. It shows how fast to move. Moving at the right speed helps. It makes the work easy. Do you like to sort things?
Early Reader · Change the reading level on the articleEverything is made of tiny bits. These bits move around fast. Some bits like to pull close. This helps things turn into liquid. It helps us know how air works. Do you like to see how things move?
Early Reader · Change the reading level on the articleTiny bits of stuff can pull on each other. They do this when they are very close. This pull helps a cloth pick up dirt. It can even help a gecko stick to a wall. It is a small but helpful pull. Can you feel things…
Early Reader · Change the reading level on the article