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 49 of 57
Try Science Lab activities about forces and motion, light, sound and electricity or matter and chemistry.
Some people loved nature. They wanted to be friends with it. They did not want to force it. They felt part of the world. We can love the earth too. Do you like to look at trees?
Early Reader · Change the reading level on the articleRose is a pretty color. It is a mix of red and pink. Some cities use this color for buildings. It can even be a color for clothes. It is a bright and happy color. Do you like rose?
Early Reader · Change the reading level on the articleTiny things can spin. Small parts of a molecule turn around. They move like a spinning top. This helps them find a good shape. It is like a dance! Can you imagine things spinning so fast?
Early Reader · Change the reading level on the articleTiny bits of stuff can spin. They spin like little tops. This spin helps us learn. We can see how they are shaped. It helps us see far stars. Can you imagine things spinning so fast?
Early Reader · Change the reading level on the articleTiny bits of stuff move in many ways. They shake and spin at the same time. This helps us learn about them. We can see how they move. It is like a tiny dance. Can you imagine a tiny dance?
Early Reader · Change the reading level on the articleTiny things can turn in space. We use rules to show this turn. This rule helps us find where they go. It is like a map for a spin. We can see how they move. Can you imagine things spinning?
Early Reader · Change the reading level on the articleRoy was a smart man. He studied light. He learned how light works. This helps us use tools like lasers. He won a big prize for his work. Do you like to study light?
Early Reader · Change the reading level on the articleBig stars make new things. They use tiny bits to build. These bits join together very fast. This makes heavy things like gold. It helps make our world. Do you like shiny things?
Early Reader · Change the reading level on the articleRudolf was a smart man. He studied how heat moves. He found out how heat works. This helps us understand the world. His work was very big. Do you like science?
Early Reader · Change the reading level on the articleRudolf was a smart man. He studied how things work. He found a new way to look at tiny bits. This helped many people learn. He won a very big prize. Can you learn something new today?
Early Reader · Change the reading level on the articleRust is a red color on metal. It happens when iron meets air and water. This can make strong metal weak. It can even make it crumble. We must keep metal dry. Do you see rust on anything?
Early Reader · Change the reading level on the articleThis is a special kind of stuff. Scientists make it in a lab. It is not found in nature. It does not stay still for long. It changes very fast. Can you find it in a book?
Early Reader · Change the reading level on the articleEverything is made of tiny bits. These bits have a small center. This center is very heavy. It stays in the middle. It helps the tiny bit work. Can you find tiny things?
Early Reader · Change the reading level on the articleYou can make many colors. Start with red, yellow, and blue. Mix them to make new colors. Red and yellow make orange. Blue and yellow make green. Red and blue make purple. It is like magic! What color will you make?
Early Reader · Change the reading level on the articleTiny parts make up everything. These parts make light. The light has a special pattern. This pattern helps us learn. It is like a secret code. We can see it with tools. Can you look for light?
Early Reader · Change the reading level on the articleLight has many colors. Some colors come from tiny parts of atoms. A man found a way to know these colors. This helps us learn about our world. It is like a secret code for light. Can you see the colors in a rainbow?
Early Reader · Change the reading level on the articleSome plants make a sweet smell. It smells like a candy shop. This smell comes from a tree. It is in the sassafras tree. We do not eat it now. It can make us sick. Can you smell a sweet flower?
Early Reader · Change the reading level on the articleA salt bridge connects two parts. It helps them work together. It uses a special liquid. This helps the parts stay clean. It is a very smart tool. Do you like science?
Early Reader · Change the reading level on the articleTwo things can swap parts. They mix in water. They trade pieces like toys. This makes new things. One new thing might turn into a solid. It might even make gas. Can you see things swap?
Early Reader · Change the reading level on the articleSamuel Ting is a great scientist. He looks at tiny bits of stuff. He found a new kind of bit. This work won him a big prize. He helps us learn about space. Do you like to learn new things?
Early Reader · Change the reading level on the articleSamuel is a scientist. He studies how things work. He also helps people at big meetings. He tells fun stories to friends. He likes to help others too. Do you like to tell stories?
Early Reader · Change the reading level on the articleSome things in space are everywhere. They are like a big field. One is called the Higgs field. It helps things have mass. This matters to all of us. Can you feel the field around you?
Early Reader · Change the reading level on the articleSome things use just one number. We use them to measure things. Time and weight are two examples. They do not need a direction. They help us know how much. It is good to know these. Can you name one more?
Early Reader · Change the reading level on the articleSome things look the same at any size. You can zoom in or out. The shape does not change. This helps us see patterns. It is like a tiny copy. Do you see patterns in nature?
Early Reader · Change the reading level on the articleLong ago, people wanted to learn about Earth. They looked at a big mountain. The mountain's pull moved a small tool. This helped them find out how heavy Earth is. It was a big discovery! Do you like looking at mountains?
Early Reader · Change the reading level on the articleA man had a big idea. He thought about a cat in a box. The cat could be alive or dead. We do not know until we look. This helps us learn about tiny things. Can you imagine that?
Early Reader · Change the reading level on the articleA man named Julian found a new way to look at things. He looked at how tiny parts move. This helps us see how the world works. It is a big idea for science. Do you like to learn how things work?
Early Reader · Change the reading level on the articleScientists look for clues. These clues help them learn. They look at things to find out why. The clues can help a new idea. They can also show an idea is wrong. This helps us know the truth. Do you like to find clues?
Early Reader · Change the reading level on the articleSome things glow when they get hit. Tiny bits of light hit a special stone. This makes the stone shine. It can make bright light. This helps us see things. It is like magic! Can you see the glow?
Early Reader · Change the reading level on the articleSome things glow when hit. Tiny bits hit them. Then they shine with light. This helps us see small things. It is like magic! Can you see the light?
Early Reader · Change the reading level on the articleSome things move in a special way. They spin and move forward at the same time. It is like a screw going into wood. This helps things move smoothly. Can you see a screw near you?
Early Reader · Change the reading level on the articleThis is a special part of matter. Scientists make it in a lab. It does not live in nature. It lasts for only a short time. It is named after a man. Can you find it on a chart?
Early Reader · Change the reading level on the articleYou can make new colors. Mix two main colors together. This makes a new color. It can be orange or green. This helps us paint pretty things. What is your favorite color to mix?
Early Reader · Change the reading level on the articleHeat likes to move. It moves from hot things to cold things. It does not go the other way on its own. This helps us know how the world works. It is a very big rule. Do you feel heat?
Early Reader · Change the reading level on the articleThings in nature can change on their own. Think of a pile of sand. We add more sand one grain at a time. Soon, the pile might slide. This can happen in many ways. It helps us learn about our world. Do you like…
Early Reader · Change the reading level on the articleSome tools find tiny bits of energy. These tools use special parts. They can see things we cannot. This helps keep us safe. It helps doctors too. Do you want to learn more?
Early Reader · Change the reading level on the articleTiny bits make up everything. These bits stay close together. They act like a drop of water. This helps them stay in a group. It is very neat! Do you like to see how things work?
Early Reader · Change the reading level on the articleSome water is a bit heavy. It has tiny parts that weigh more. This water is in our world. It is hard to find all by itself. It stays mixed with other water. Can you find it in a cup?
Early Reader · Change the reading level on the articlePeople can make new medicine. They start with things from plants. They change them a little bit. This helps make medicine for you. It is a smart way to work. Can you find a plant? It might help us stay well.
Early Reader · Change the reading level on the articleSometimes things are mixed together. We can pull them apart. We can sort them by size. This helps us make useful things. It is like sorting your toys. Can you find things to sort?
Early Reader · Change the reading level on the articleSerge Haroche is a scientist. He studies tiny bits of light. This work helps us learn a lot. He won a very big prize. He is a great teacher too. Do you like to learn new things?
Early Reader · Change the reading level on the articleLittle bits can sink in water. They fall to the bottom. This is called settling. It helps make our water clean. It can even help make wine! Have you seen bits sink in a cup?
Early Reader · Change the reading level on the articleA shadow is a dark spot. It happens when something blocks light. The light cannot get past the object. This makes a shape on the ground. Shadows can change during the day. Can you find a shadow today?
Early Reader · Change the reading level on the articleA shake is a tiny bit of time. It is very, very fast. It is much faster than a blink. It helps us measure things that happen quick. Can you imagine something that fast? It is a fun way to talk about time.
Early Reader · Change the reading level on the articleThings can slide past each other. This can change a shape. It can make a box look tilted. Some things stay tilted like that. It is fun to see how things move. Can you see things sliding?
Early Reader · Change the reading level on the articleSome things are very stiff. They do not bend easily. Some things are soft. They bend or slide. This helps us build things. We can pick the best stuff. Can you find something stiff?
Early Reader · Change the reading level on the articleA push can change a shape. It can slide one part of a block. The block might lean to one side. This can happen to soil too. It can make a small slide. Have you ever seen things slide?
Early Reader · Change the reading level on the articleSheldon Glashow is a smart man. He studies how the world works. He won a very big prize. This prize was for his work on tiny bits of matter. He helps us learn about our world. Do you like to learn new things?
Early Reader · Change the reading level on the article