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 14 of 57
We use tools to measure things. We can measure how long things are. We can measure how heavy they are. This helps us be fair. It helps us build things. Do you like to measure things?
Early Reader · Change the reading level on the articleUranium is a heavy metal. It is a silvery color. It can be found in rocks. It makes heat to make power. This heat helps us make light. Can you find it in a rock?
Early Reader · Change the reading level on the articleOur bodies make a special thing. It helps us stay healthy. It is found in pee. It also helps plants grow big. It can even help your skin. Do you want to learn more?
Early Reader · Change the reading level on the articleTiny parts join to make things. These parts stick together. They share small bits to stay close. This helps make everything we see. It is like a tiny hug. Do you see things join together?
Early Reader · Change the reading level on the articleVanadium is a hard metal. It looks silver and grey. This metal can make many colors. It helps make strong steel. We use it for tools. Can you find something made of metal?
Early Reader · Change the reading level on the articleA vapor is a gas. It can turn back into a liquid. This makes clouds and mist. It is all around you. It helps make the world beautiful. Can you see the mist?
Early Reader · Change the reading level on the articleMoving things have speed. They also move in a way. You can go fast to the left. You can go fast to the right. Speed and way go together. This helps us know where things go. Do you like to move fast?
Early Reader · Change the reading level on the articleSome liquids are very thick. Syrup is thick and slow. Water is thin and fast. Thick liquids stick together more. This helps us know how they flow. Do you like thick syrup?
Early Reader · Change the reading level on the articleWe see many colors. Light has colors in it. Some light looks white. A glass shape can show the colors. You can see red and blue. It is like a rainbow. Do you see colors too?
Early Reader · Change the reading level on the articleA volt measures power. It helps us see how much push electricity has. Think of it like water in a pipe. Some batteries have a little push. Some have a lot. It helps your toys work. Do you use batteries?
Early Reader · Change the reading level on the articleElectricity can push things. It works like water in a pipe. This push helps power your toys. It also helps cars start. It is a big help to us. Do you use batteries often?
Early Reader · Change the reading level on the articleTiny bits make things move. They are very small. They help change things. They can change one part into another. This helps us learn about our world. Do you want to see more?
Early Reader · Change the reading level on the articleTiny things move in a special way. They act like a wave. It is like a wave in the water. This helps us find where they are. It is very neat! Can you imagine a tiny wave?
Early Reader · Change the reading level on the articleWaves can meet and change. They can make a big wave. Or they can make no wave at all. This happens in water and light. It is very cool to see. Can you find waves in a pond?
Early Reader · Change the reading level on the articleA wave goes up and down. It repeats its shape. We measure the space between the tops. This space is the length. It helps us see how waves move. Do you see waves in water?
Early Reader · Change the reading level on the article{ "text":\"Tiny things act in two ways. They can move like little balls. They can also move like waves in water. This helps us learn how the world works. It is very neat! Do you want to see more?\",\n \"media\": [\n…
Early Reader · Change the reading level on the articleWe use a special name for magnets. It is called a weber. This name helps us measure magnet power. It helps us understand how electricity works. It is a very big idea. Can you find a magnet?
Early Reader · Change the reading level on the articleA week has seven days. It helps us plan our time. We use it to know when to work. We also use it to rest. It helps us stay on track. What is your favorite day?
Early Reader · Change the reading level on the articleGravity pulls on everything. It pulls you down to the ground. This pull is called weight. Your weight can change on the Moon. It is much less there. We can use a scale to see it. Do you know how much you weigh?
Early Reader · Change the reading level on the articleWerner Heisenberg was a smart man. He studied how tiny things work. He learned many secrets about the world. His work helped us learn about science. He was a great teacher too. Do you like to learn new things?
Early Reader · Change the reading level on the articleA wheel and axle work as one. The big wheel turns a small rod. This helps us move heavy things. It makes hard work much easier. We use them every day. Do you see wheels near you?
Early Reader · Change the reading level on the articleWhite is a very bright color. It is like snow or milk. It is not black. White can look very clean. It is a pretty color. Do you see white things?
Early Reader · Change the reading level on the articleA man found special rays. These rays can see inside you. They show your bones. This helps doctors see your body. It is a great way to help. Can you see the bones?
Early Reader · Change the reading level on the articleWilliam Gilbert was a smart man. He studied magnets. He found that the Earth is like a magnet. This helps a compass work. He also studied the Moon. Do you like to learn about space?
Early Reader · Change the reading level on the articleWilliam Bragg was a man who loved science. He studied how things work. He used special light to see inside things. This helped doctors see bones. He even won a big prize for his work. He worked with his son too. Do…
Early Reader · Change the reading level on the articleWilliam Shockley was a smart man. He helped make parts for machines. These parts help our tools work. He lived in California. He worked with a team. Do you like machines?
Early Reader · Change the reading level on the articleWolfgang Pauli was a smart man. He studied how small things work. He found new things in science. This helped us learn about our world. He was a great thinker. Do you like to learn new things?
Early Reader · Change the reading level on the articleYou can do work with a push. This happens when things move. You push a ball to make it go. You also use work to lift things up. It helps move energy around. Do you like to move things?
Early Reader · Change the reading level on the articleX-rays are a special kind of light. They can see through things. They can see your bones. This helps doctors see if you are hurt. It is like magic! Can you see the bones?
Early Reader · Change the reading level on the articleYang was a smart man. He studied how tiny things work. He found out new things about the world. His work helps us learn. He won a very big prize. Do you like to learn new things?
Early Reader · Change the reading level on the articleYellow is a bright color. You see it in lemons and bananas. It is also in autumn leaves. It makes us feel happy. Do you like the color yellow?
Early Reader · Change the reading level on the articleThis is a special metal. It is very hard to find. It comes from rocks in the ground. People use it for lasers. It is very rare. Do you like science?
Early Reader · Change the reading level on the articleYttrium is a shiny metal. It looks like silver. It helps make lights work. It is in some TV screens, too. It is found in rocks. Can you find silver things at home?
Early Reader · Change the reading level on the articleZinc is a shiny metal. It can look blue and white. We need it to grow. It helps people and plants stay well. It is in many things. Do you know what else has zinc?
Early Reader · Change the reading level on the articleThis is a special metal. It looks grey and white. It is very strong. It can stay safe in hot places. This metal helps us build things. Do you like shiny things?
Early Reader · Change the reading level on the articleWe use clocks to tell time. A day has two parts. One part is the day. One part is the night. We use numbers from 1 to 12. This helps us know when to play. What time is it now?
Early Reader · Change the reading level on the articleSmall parts can move in tiny things. One part moves to a new spot. It moves to a neighbor right next to it. This helps the tiny thing stay strong. It is like moving to a better seat. Can you imagine moving to a new spot?
Early Reader · Change the reading level on the articleSome liquids are used in factories. This one has a sweet smell. It can be found in soaps. It can also be in water. We must keep it out of our water. It is important to be safe. Can you stay safe too?
Early Reader · Change the reading level on the articleA day has 24 hours. This clock counts every hour. It starts at midnight. It goes all the way to midnight again. This helps people know the exact time. It helps doctors too. Do you use this clock?
Early Reader · Change the reading level on the articleAage Bohr was a smart man. He studied how tiny things work. He won a very big prize. His father won the same prize. This helped us learn about the world. Do you like to learn new things?
Early Reader · Change the reading level on the articleAbdul Qadeer Khan was a scientist. He worked with metals. He helped his country make big tools. Some people were not happy with him. He lived a very busy life. Do you like learning about science?
Early Reader · Change the reading level on the articleAbdus Salam was a great scientist. He studied how tiny things work. He won a very big prize for his work. He helped many people learn science. He was very smart. Do you like to learn new things?
Early Reader · Change the reading level on the articleTiny things have a shape. Some shapes look like a left hand. Others look like a right hand. We use names to tell them apart. This helps us know how they work. Can you use your hands to show the difference?
Early Reader · Change the reading level on the articleSome metals have a special power. This power is hard to see. We use a tool to find it. It helps us learn about metal. It is very cool to study. Can you find metal in your house?
Early Reader · Change the reading level on the articleThe world has a big stage. Space is like a stage for everything. Time is like a clock that never stops. It moves at the same speed everywhere. This helps us know where things are. It helps us know when things happen.…
Early Reader · Change the reading level on the articleTiny bits of light can get stuck. This happens in things like air or water. The light gives its energy to the bits. This helps keep us safe. It can even help make sunscreen work. Do you see the light around you?
Early Reader · Change the reading level on the articleSome things can soak up other things. It is like a sponge. The stuff goes deep inside. It does not just stay on top. This helps us make many things. Do you like to soak things up?
Early Reader · Change the reading level on the articleLight can hit things. Some things soak up the light. This helps plants make food. It also helps doctors see your bones. It is like a sponge soaking up water. Can you see colors in the light?
Early Reader · Change the reading level on the article