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 35 of 57
Jean Perrin was a smart man. He studied tiny bits of matter. These bits are called atoms. He showed that atoms are real. This work won him a big prize. Do you like to learn new things?
Early Reader · Change the reading level on the articleSometimes things move in a sudden way. This is called a jerk. It happens when speed changes too fast. A bumpy car ride can feel like this. It can even hurt your neck. Do you like smooth rides?
Early Reader · Change the reading level on the articleJerome is a man who studies science. He learned how tiny things work. This work helped him win a big prize. His work helps us learn about the world. He is a very smart teacher. Do you like to learn new things?
Early Reader · Change the reading level on the articleJohannes Jensen was a smart man. He studied how tiny things work. He won a very big prize for his work. His ideas helped us learn about science. He lived a long time ago. Do you like to learn new things?
Early Reader · Change the reading level on the articleA man named Mike studies how things work. He learns about how things melt or freeze. He won a big prize for his work. This prize is very special. He helps us learn about the world. Do you like to learn new things?
Early Reader · Change the reading level on the articleJohannes Stark was a man who studied light. He won a big prize for his work. He also did some very bad things. He was not kind to other people. He was part of a mean group. Do you like to learn about light?
Early Reader · Change the reading level on the articleJohann Ritter was a smart man. He studied how things work. He found light that we cannot see. This light helps us learn. He also learned about power in water. He was a great helper to science. Can you find invisible…
Early Reader · Change the reading level on the articleJohn was a smart man. He helped make better batteries. These batteries help our tools work. They help cars run, too. He won a big prize for his work. Do you use batteries every day?
Early Reader · Change the reading level on the articleJohn was a smart man. He studied how tiny things work. He helped split a tiny atom. This led to new power. He won a big prize for his work. Do you like to learn new things?
Early Reader · Change the reading level on the articleJohn Van Vleck was a smart man. He studied how magnets work. He won a very big prize. This prize was for his science work. He helped us learn about the world. Can you learn about science too?
Early Reader · Change the reading level on the articleJohn Hall is a smart man. He studies light. He won a very big prize. His work helps us see light better. We can learn from him. Do you like to look at light?
Early Reader · Change the reading level on the articleJohn was a great scientist. He studied how things change. He won a big prize for his work. This helps us learn about the world. He also worked for peace. Do you like to learn new things?
Early Reader · Change the reading level on the articleJohn was a smart man. He studied how things work. He found a new way to use power. This work helped many people. It was a big deal. Do you like to learn new things?
Early Reader · Change the reading level on the articleJohn was a man who loved science. He showed people how things work. He built machines to show the stars. He even taught kings about science. He was a very smart teacher. Do you like to learn new things?
Early Reader · Change the reading level on the articleJoseph Black was a smart man. He studied how things work. He found out about heat. He also found a new kind of air. He taught many students. Do you like to learn new things?
Early Reader · Change the reading level on the articleJoseph Henry was a smart man. He studied how power works. He made tools with wires. These tools help us today. He helped a big museum. Do you like to learn?
Early Reader · Change the reading level on the articleSome metals can carry power easily. We put a tiny gap between them. Power flows right through the gap. This helps us measure things well. It is very cool! Can you imagine that?
Early Reader · Change the reading level on the articleJoseph made glass for tools. He made glass for telescopes. These help us see the stars. He found dark lines in sunlight. This helps us learn about space. He was a great maker. Do you like looking at stars?
Early Reader · Change the reading level on the articleElectricity can make things hot. It flows through a wire. This makes heat. We use it to cook food. It helps us stay warm too. It is very useful. Can you think of a heater?
Early Reader · Change the reading level on the articleWe use a special way to measure things. It links energy and time together. It helps us talk about things that spin. It also helps us study tiny bits of our world. This is a big job for one small unit. Do you like to…
Early Reader · Change the reading level on the articleTiny bits make up our world. Some bits are very small. They stay together in a group. This group is a special thing. It helps us learn about space. Can you imagine things so small?
Early Reader · Change the reading level on the articleJulian was a smart man. He studied how tiny things work. He found new ways to learn about science. This work helped many people. He even won a big prize! Do you like to learn new things?
Early Reader · Change the reading level on the articleJuly is a month in the year. It has 31 days. It is very hot in some places. It is cold in other places. This month is a time for summer. Do you like the warm sun?
Early Reader · Change the reading level on the articleJune is the sixth month. It has 30 days. In some places, it is summer. It can be very hot. We can see many stars. Do you like summer?
Early Reader · Change the reading level on the articleKai was a man who loved science. He lived in a place called Sweden. He studied how tiny things work. He won a very big prize. His work helps us learn. Do you like to learn new things?
Early Reader · Change the reading level on the articleAlex Müller was a smart man. He studied how things work. He found a new way to use power. This work helped many people. He won a very big prize. Do you like to learn new things?
Early Reader · Change the reading level on the articleTiny bits make up our world. Some bits are called kaons. They are very small. They move in space. They help us learn about everything. Can you imagine tiny bits?
Early Reader · Change the reading level on the articleKarl Sharpless is a great scientist. He studies how things are made. He won two very big prizes. His work helps us make new things. He also loves to go fishing. Do you like to learn new things?
Early Reader · Change the reading level on the articleA katal is a way to measure. It shows how fast things change. Some things help a change happen fast. This unit helps us know how much. It helps us study science. Can you imagine measuring speed? It is a very big unit.
Early Reader · Change the reading level on the articleKathleen was a great scientist. She studied tiny things. She used light to see how they look. This work helped many people. She was a very smart leader. Do you like to learn new things?
Early Reader · Change the reading level on the articleWater and air can move in loops. Imagine a tiny circle of water. If it moves, the loop stays the same. This helps us learn how things fly. It is a very cool idea. Can you see water moving in a loop?
Early Reader · Change the reading level on the articleKen Wilson was a smart man. He studied how things change. He looked at how ice melts. He also used big computers for his work. His work won a very big prize. He helped us learn about the world. Do you like to learn…
Early Reader · Change the reading level on the articleSome things in space spin fast. They can also have a charge. This makes them very special. Scientists use math to study them. It helps us learn about the stars. Do you like space?
Early Reader · Change the reading level on the articleA man named Braun loved science. He found new ways to send signals. These signals travel through the air. This helps us talk from far away. His work helped make the first TVs. Do you like to watch TV?
Early Reader · Change the reading level on the articleThis is a way to measure weight. It tells us how hard things pull. It uses one kilogram to find this. It helps us talk about bows and bikes. We can use it to learn. Can you feel how heavy things are?
Early Reader · Change the reading level on the articleWe use a way to measure weight. It tells us how much stuff is in a space. This helps us know if things are heavy. It is a way to see how tight things are. It is very useful. Do you want to learn more?
Early Reader · Change the reading level on the articleA kilometre is a way to measure. It tells us how far things are. It is made of many small metres. We use it to find places on land. It helps us know where to go. Can you walk a long way?
Early Reader · Change the reading level on the articleThis tells us how fast things go. It shows how far you go in one hour. You see it on road signs. It helps us stay safe. It is a very useful tool. Do you know how fast you can run?
Early Reader · Change the reading level on the articleWe use power in our homes. It helps us turn on lights. It also runs our TVs. We pay for the power we use. This helps us know how much we need. Do you use a lot of power?
Early Reader · Change the reading level on the articleParts can join to move. These parts stay close. They can slide or turn. This helps machines work well. It helps tools move for you. Do you see moving parts?
Early Reader · Change the reading level on the article{ "text": [ "Tiny bits make up all air. ", "These bits move all the time.", "They bounce around like little balls.", "Moving bits make things feel hot.", "It is a busy world inside!", "Can you feel the air move?" ],…
Early Reader · Change the reading level on the articleThis tool makes gas. It looks like a snowman. It has three glass parts. It uses liquid and solids. This makes gas for science. It is very cool! Can you see the gas?
Early Reader · Change the reading level on the articleKip Thorne is a smart man. He studies the stars. He looks at big black holes. He helps us learn about space. His work is very cool. Do you like looking at the night sky?
Early Reader · Change the reading level on the articleKlaus von Klitzing is a smart man. He found a new way to study how things work. He won a big prize for his work. His work helps us learn about the world. He is a great thinker. Do you like to learn new things?
Early Reader · Change the reading level on the articleKonstantin is a smart scientist. He studies very tiny things. He found a new kind of material. This helps us make new tools. He even makes art with ink. Do you like to learn new things?
Early Reader · Change the reading level on the articleThis is a special kind of solid. It has no color. It is made from two things. It can change very fast. We must keep it very cold. It is a neat discovery! Do you like science?
Early Reader · Change the reading level on the articleA flask is a glass jar. It holds many things. It can hold liquids. It can hold tiny bits of powder. Scientists use them to mix things. They help us learn. Do you want to see one?
Early Reader · Change the reading level on the articleA long ladder moves very fast. It goes into a small garage. To some, it fits inside. To others, it is too long. This is a big puzzle. Can you guess why?
Early Reader · Change the reading level on the article