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 22 of 57
We can find what is in food. Scientists burn a tiny bit of it. This shows us what it is made of. It helps us know if food is good. It is like a magic trick! Can you imagine that?
Early Reader · Change the reading level on the articleWater likes to stay flat. If you join cups with a pipe, the water stays at the same level. It does not matter if the cups are big or small. This helps water move to your house. It is like magic! Do you see water in…
Early Reader · Change the reading level on the articleWe use different ways to measure things. Some places use one way. Other places use another way. They look the same but are not. This helps us know how much we have. Do you use these ways at home?
Early Reader · Change the reading level on the articleSome dyes change color. They can find metal in water. This helps us see the metal. It is like a tiny light. The color tells us a secret. It shows when the job is done. Do you like bright colors?
Early Reader · Change the reading level on the articleMany parts work as one. They all talk to each other. A city is like this. Your brain is like this, too. It helps things work well. It is very cool! Can you find one?
Early Reader · Change the reading level on the articleSome things can be squeezed. You can press on them to make them smaller. Air can be squeezed very easily. Hard rocks are much harder to squeeze. This helps us build big buildings. Can you squeeze a soft sponge?
Early Reader · Change the reading level on the articlePushing makes things smaller. It is like squeezing a ball. This can change how things look. It helps us build strong things. We can use it in engines too. Have you ever squeezed something soft?
Early Reader · Change the reading level on the articleTiny bits of light hit small things. They bounce off like balls. When they hit, they lose some power. This makes the light change. It helps us learn how light works. Can you see the light move?
Early Reader · Change the reading level on the articleTiny bits of stuff act like waves. They have a special size. This size tells us about their energy. It helps us see how they move. Science is full of small wonders. Can you imagine being that small?
Early Reader · Change the reading level on the articleComputers help us learn about our world. They solve hard math problems. This helps us see how things work. It can even help us guess the weather. It is a very smart way to study. Do you like using computers?
Early Reader · Change the reading level on the articleMixing things can change how they look. You can add more stuff to a mix. This makes it strong. You can add more water to a mix. This makes it weak. It is fun to see! Can you see a mix change?
Early Reader · Change the reading level on the articleA condenser helps make liquid. It turns hot air into water. This happens when the air gets cold. It is used in science labs. It helps us study things. Do you like to see how things change?
Early Reader · Change the reading level on the articleSome rules help us see shapes. These rules keep angles the same. Even if things grow or shrink, they look right. This helps us learn about the world. It is a fun way to look at things. Do you like shapes?
Early Reader · Change the reading level on the articleSome things are like a big family. They look or act the same. They can come from the same place. This helps us learn about them. It is like finding cousins! Do you like finding things that are alike?
Early Reader · Change the reading level on the articleSome things act like acids. They give a tiny part away. They give it to a base. This makes a new thing. The new thing is called a conjugate. It helps our blood stay safe. Do you like science?
Early Reader · Change the reading level on the articleSome things in our world stay the same. Energy does not just go away. It can change into a new form. This helps us understand our world. It is a very big rule. Can you see it work?
Early Reader · Change the reading level on the articleSome forces act the same way. Gravity is one of these. It does not matter how you move. It only cares where you start and end. This helps keep energy safe. It is like a smooth ride. Can you feel gravity pulling you down?
Early Reader · Change the reading level on the articleSome things stay the same. They do not change. Even when things move, they stay. This helps us know how the world works. It is like a rule for nature. Can you think of something that stays the same?
Early Reader · Change the reading level on the articleConstance Tipper studied metal. She looked at how it breaks. This helped build safe ships. She was a very smart teacher. We can learn from her work. Do you like science?
Early Reader · Change the reading level on the articleThis is a special metal. It is made of two things. It helps move power. It stays the same when hot. This helps tools work well. It is very useful. Do you like metal?
Early Reader · Change the reading level on the articleSome things stay the same. They do not change as things move. Energy is one of those things. It helps us know how things work. It is like a rule for the world. Can you find things that stay the same?
Early Reader · Change the reading level on the articleThings touch each other every day. When things touch, they can bend. This happens when you press them. It helps us build cars and tools. We can learn how things work by looking at them. Do you like to touch things?
Early Reader · Change the reading level on the articleContrast is how we see things. It shows the difference between light and dark. This helps us see shapes. It helps us see colors too. It makes things stand out. Can you see the difference?
Early Reader · Change the reading level on the articleHeat can move from one place to another. It moves when things like water or air flow. Hot water moves up in a pan. Cold water falls down. This helps heat spread out. It is very cool to see! Can you feel warm air move?
Early Reader · Change the reading level on the articleMaking big things can be hard. We can make small pieces first. Then we join them all together. This way, we make more stuff. It helps us build big things. Can you build with blocks?
Early Reader · Change the reading level on the articleMaking things in a lab is fun. We mix things to make new stuff. Sometimes we make what we want. Sometimes we make something else. We want to make the best stuff. How much do you want to make?
Early Reader · Change the reading level on the articleTiny bits in metal like to pair up. They do this when it is very cold. These pairs help power move easily. This helps us make cool tools. It is like a team of friends. Do you like working in a team?
Early Reader · Change the reading level on the articleSome tiny things stick together. A metal sits in the middle. Other bits hold onto it. They form a little group. This group can help sick people. It is very neat! Do you like tiny things?
Early Reader · Change the reading level on the articleTiny bits of matter form shapes. One bit sits in the middle. Other bits sit all around it. This makes a pattern. These shapes can be like a box. They can be like a star. Can you see the shapes?
Early Reader · Change the reading level on the articleTiny bits make up everything. One bit can have many friends. These friends stay very close. It is like a big hug. Some bits have many friends. Some have just a few. How many friends can one bit have?
Early Reader · Change the reading level on the article{ "text": \"Tiny bits of metal sit in the middle. Small pieces stick right to them. Other pieces sit a little further away. This helps the metal work in many ways. It can even change colors! Can you imagine tiny…
Early Reader · Change the reading level on the articleScientists made a new thing. It is a tiny part of matter. It is very hard to make. It does not stay for long. It goes away fast. It is named after a smart man. Do you like science?
Early Reader · Change the reading level on the articleThis is a green salt. It comes from copper. It can be used as a color. It can also stop bad things from growing. It glows blue and green in a flame. Can you see the green color?
Early Reader · Change the reading level on the articleThis is a special salt. It can be brown or blue. It can make fire look blue and green. We use it to help make things. It is very rare in the ground. Do you like bright colors?
Early Reader · Change the reading level on the articleThis is a black solid. It comes from copper. It can make colors for clay pots. It even helps make blue fire in fireworks. It is a very useful thing. Can you find something black today?
Early Reader · Change the reading level on the articleThis is a bright blue crystal. It looks like a pretty stone. It can turn white if it gets hot. Then it turns blue again with water. It helps keep plants healthy. Do you like the color blue?
Early Reader · Change the reading level on the articleOld rules and new rules work together. One rule is for big things. One rule is for tiny things. The new rule must act like the old one. This helps us learn. Do you like rules?
Early Reader · Change the reading level on the articleWe can use power to find things. This helps us find water in food. It can even check your blood. It is a very smart way to work. Do you want to learn more?
Early Reader · Change the reading level on the articleSome plants have a sweet smell. It smells like vanilla. This smell helps plants stay safe. It can taste very bitter. This stops animals from eating them. Do you like the smell of vanilla?
Early Reader · Change the reading level on the articleTiny bits fly through everything. They are very hard to find. They can pass right through the Earth. Two men used water to find them. They saw tiny flashes of light. Now we know they are real. Can you find them too?
Early Reader · Change the reading level on the articleThe world has a special rule. It works the same in a mirror. It works the same if time went back. It even works with different bits. This keeps everything in balance. Do you like rules? We do too!
Early Reader · Change the reading level on the articleTiny bits of stuff are not the same. Some bits have a twin. The twin is not quite like the first. They do not act the same way. This helps make our world. Do you like twins?
Early Reader · Change the reading level on the articleBig oil can be broken. It is broken into small bits. This uses a lot of heat. It makes fuel for cars. It helps us move. Do you like to ride in a car?
Early Reader · Change the reading level on the articleSome liquids help keep wood strong. This liquid stops wood from rotting. It can also make food taste smoky. It is used on train tracks. It helps the wood last a long time. Do you like the smell of smoke?
Early Reader · Change the reading level on the articleSome things can start a big chain. Small bits of stuff can work together. They make a lot of heat and power. This helps us make energy. It is a very big job. Do you want to learn more?
Early Reader · Change the reading level on the articleTiny bits can hit each other. They move very fast. Sometimes they hit and bounce away. This helps us see how they work. It is like a game of tag. Do you like to play tag?
Early Reader · Change the reading level on the articlePeople can build tiny shapes. They use small parts to make them. This helps make better medicine. It can help us stay well. It is like building with blocks. Do you like to build things?
Early Reader · Change the reading level on the articleTiny bits of matter can make colors. Small parts push on other parts. This push changes how they look. It can even make them act like magnets. It is a neat way to see how things work. Do you like bright colors?
Early Reader · Change the reading level on the article