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 5 of 57
Some things stop power from moving. This is like a pipe full of hair. It makes it hard for water to flow. Metal lets power move fast. Rubber makes it stop. Can you find metal in your home?
Early Reader · Change the reading level on the articleSome things have a special pull. This pull can push or pull. It can even make a spark. It helps things move around. It is all around us. Do you feel it too?
Early Reader · Change the reading level on the articleTiny bits of stuff have a force. This force can pull or push. It works even without touching. It can make things stick together. It helps hold tiny things in place. Do you feel it too?
Early Reader · Change the reading level on the articleSome things have a tiny charge. This charge can push or pull. It can act like a hill. It can make things move. It helps things work. Do you feel the pull?
Early Reader · Change the reading level on the articleTiny bits of power move in ways that change things. This power can come from a battery. It can even come from a chemical mix. This helps us make new things. It is like magic! Do you want to see more?
Early Reader · Change the reading level on the articleElectricity can break things apart. It can split water into bubbles. These bubbles are gas. This helps us find new things. It can even make metal. We use it every day. Can you see bubbles in water?
Early Reader · Change the reading level on the articleSome magnets use power to work. They use a wire coil. Electricity flows through the wire. This makes the magnet pull. It can lift heavy metal. It is very cool! Can you find a magnet?
Early Reader · Change the reading level on the articleTiny bits of power move around us. They can pull or push things. This power is in the air. It helps us use lights and tools. It is all around you! Can you feel it?
Early Reader · Change the reading level on the articleMoving magnets can make power. A magnet moves near a wire. This makes electricity flow. It helps run big machines. This makes our lights work. Do you like bright lights?
Early Reader · Change the reading level on the articleThere are many kinds of light. Some light is easy to see. Other light is hidden from us. Some light helps us talk through the air. This light is all around you. Can you find the light in your room?
Early Reader · Change the reading level on the articleSome things give power to electricity. A battery does this. It uses stuff inside to push. This helps lights turn on. It helps toys work too. It is very helpful! Do you use batteries?
Early Reader · Change the reading level on the articleTiny parts live inside atoms. These parts move in little paths. They stay in their own spots. This helps atoms stay together. It is like a tiny home. Can you imagine being so small?
Early Reader · Change the reading level on the articleTiny things live in small groups. They move in circles around a center. These circles are like rings. Each ring can only hold some bits. This helps everything stay in place. It is very neat! Can you see them?
Early Reader · Change the reading level on the articleTiny bits of matter move fast. They can gain energy. This energy helps them move. It is a way to measure power. It helps us learn about small things. Can you imagine tiny things moving?
Early Reader · Change the reading level on the articleSome things have a tiny pull. This can make hair stand up. It can make small bits stick to you. It even makes clothes cling. It is a funny force. Have you felt it before?
Early Reader · Change the reading level on the articleTiny bits move in atoms. They live in special paths. These paths are like steps. Some bits stay low. Some bits jump up high. This helps things work. Do you want to see more?
Early Reader · Change the reading level on the articleEnrico Fermi was a smart man. He loved to study how things work. He found ways to use tiny bits of matter. This helps us make power. He was a great scientist. Do you like to learn new things?
Early Reader · Change the reading level on the articleThings have energy inside them. This energy helps things work. It can also make things hot. We can see this heat move. It helps us understand our world. Do you feel warmth from a fire?
Early Reader · Change the reading level on the articleThings like to get messy. Energy can spread out too. It does not stay in one spot. This makes it hard to use. It is like a pile of scraps. Can you find things that are messy?
Early Reader · Change the reading level on the articlePeople study our world. They look at the air and water. They check the soil too. This helps us see how things change. It helps us keep our home safe. Do you like to explore?
Early Reader · Change the reading level on the articleMath helps us see how things move. It shows where things go. It tells us how fast they move. This helps us know where things will be. It is like a map for moving things. Can you see things moving?
Early Reader · Change the reading level on the articleThings fall at the same speed. A heavy hammer falls fast. A light feather falls fast too. They land at the same time. This helps us learn about space. Can you drop two things to see?
Early Reader · Change the reading level on the articleErbium is a special metal. It can look pink. It helps make light for tools. Doctors use it to help teeth. It is very helpful to us. Do you like pink colors?
Early Reader · Change the reading level on the articleErnest Lawrence was a smart man. He built a big machine. It helped him learn about tiny things. This machine was very special. It helped doctors too. Do you like to build things?
Early Reader · Change the reading level on the articleErnst Mach was a smart man. He studied how things move. He looked at fast bullets. He saw how they move the air. This helps us learn about speed. Do you like to learn about speed?
Early Reader · Change the reading level on the articleErwin was a smart man. He studied how small things work. He wrote big rules for science. His work helped us learn about life. He won a very big prize. Do you like science too?
Early Reader · Change the reading level on the articleSpace is very big. Earth pulls on everything. It pulls us down to the ground. You must go very fast to leave. This speed helps you fly away. Can you imagine flying to the stars?
Early Reader · Change the reading level on the articleSome things smell very good. They can smell like fruit. They can smell like flowers. These things help make yummy food. We can smell them in an apple. Do you like the smell of fruit?
Early Reader · Change the reading level on the articleEthane is a clear gas. It is found in the air. It is also in space. It can be found on moons and far planets. It can even make lakes on a moon! Do you like to look at the stars?
Early Reader · Change the reading level on the articleSome things are made of tiny parts. These parts hold things together. They can be in plants or in food. They even help us in science. They are all around us. Can you find them?
Early Reader · Change the reading level on the articleSome gas helps fruit grow. It makes fruit ripe. This gas is also used for plastic. We use plastic for many things. It is a very helpful gas. Can you name a plastic thing?
Early Reader · Change the reading level on the articleEuropium is a special metal. It is very soft. You can cut it with a knife. It can glow in the dark. This metal is hard to find. Do you like things that glow?
Early Reader · Change the reading level on the articleWater can turn into air. It stays in the air as a gas. This happens when it gets warm. The sun helps it move. This helps make clouds. Can you see the mist?
Early Reader · Change the reading level on the articleYou can try a test to learn. This is called an experiment. You see what happens when you change one thing. It helps you learn how things work. It is a fun way to find out the truth. Do you want to try one?
Early Reader · Change the reading level on the articleWe use numbers to tell how hot it is. This is called Fahrenheit. It tells us if the air is hot or cold. It helps us know what to wear. Do you like warm days or cold days?
Early Reader · Change the reading level on the articleSome things can hold a charge. This is like a tiny battery. It helps your toys work. It keeps things running well. It is a very cool thing. Do you like toys with batteries?
Early Reader · Change the reading level on the articleTiny bits make up all things. These bits are like building blocks. They make up your body and the world. They stay in their own spots. This helps everything stay together. It is very cool! Can you see things around you?
Early Reader · Change the reading level on the articleSome things act like magnets. Iron is one of them. It pulls on other magnets. This helps us make tools. It even holds things on your fridge! Can you find a magnet near you?
Early Reader · Change the reading level on the articleA field is a special thing in space. It can be all around us. It can pull on things. It can also push on things. This helps things move in the world. It is very cool! Can you feel it?
Early Reader · Change the reading level on the articleA filter helps clean things. It keeps big bits out. Only the liquid goes through. This helps make things pure. It can even help us eat. Do you use a filter at home?
Early Reader · Change the reading level on the articleThings can move through the air. Birds and bugs fly high. Some machines like planes fly too. Flight helps us see the world. It is very fun to watch. Can you see something flying?
Early Reader · Change the reading level on the articleSome things can flow. Water and air both flow. They move in many ways. This helps us fly planes. It also helps us see the weather. Can you see things flow?
Early Reader · Change the reading level on the articleSome things can glow in the dark. They take in light. Then they shine with bright colors. This helps us see them. It looks like magic! Do you like bright colors?
Early Reader · Change the reading level on the articleFluorine is a pale yellow gas. It is very strong. It likes to join with other things. It helps keep your teeth healthy. You can find it in toothpaste. Do you brush your teeth?
Early Reader · Change the reading level on the articleFoam is made of tiny bubbles. These bubbles live in liquid. They can also live in solid things. Some foam is soft like a sponge. It helps us clean things. Have you seen bubbles in your drink?
Early Reader · Change the reading level on the articleLenses help us see. They bend light to make a clear picture. Some lenses make things look big. Other lenses let you see a wide view. This helps us take photos. Do you like looking through a lens?
Early Reader · Change the reading level on the articleLight moves in lines. These lines meet at a point. This point makes things look clear. If they do not meet, things look blurry. It helps your eyes see well. Do you like seeing clear things?
Early Reader · Change the reading level on the articleA foot is a way to measure. It tells us how long things are. It is made of 12 inches. We use it to see how tall we are. It helps us build things. Do you know how long your foot is?
Early Reader · Change the reading level on the article