Explore rocks, volcanoes, weather, oceans and the processes that shape Earth. Choose an article below; its reading controls let you move between the available levels.
1,427 public articles · Page 27 of 30
Big rocks stand in the sea. Waves hit the cliffs. This makes cracks in the rock. The cracks grow into caves. Then an arch forms. The arch falls down. Now a tall rock pillar stays. Birds like to live there. Do you…
Early Reader · Change the reading level on the articleRocks can tell us about time. Layers of rock show long ages. They show when old animals lived. We use fossils to name them. This helps us learn our history. It is like a big book. Can you find a rock?
Early Reader · Change the reading level on the articleRocks hang from cave ceilings. They look like stone drips. Water drips down one drop at a time. Each drop leaves a tiny bit of rock. Slowly, the rock grows long. It can look like a straw. Do you want to see one?
Early Reader · Change the reading level on the articleRocks grow on cave floors. Water drips from the ceiling. It leaves bits of rock behind. These bits pile up high. They can look like fingers. Do not touch them! They grow very slowly. Can you find a cave?
Early Reader · Change the reading level on the articleThis stone is dark brown or black. It can look like a cross. It is a very hard stone. You can find it in Georgia. It is a special stone for that state. Do you like looking at rocks?
Early Reader · Change the reading level on the articleSteamboat is a very big geyser. It shoots water high up. It is the tallest in the world. It can shoot water very far. We can watch it spray. Do you want to see it?
Early Reader · Change the reading level on the articleA steam devil is a tiny wind swirl. It spins over warm water. It looks like a white cloud tube. It can happen on big lakes. It can happen on hot springs too. It is fun to see. Have you seen a wind swirl?
Early Reader · Change the reading level on the articleThis is a grey rock. It looks like shiny metal. It can be used in matches. People used it for eye makeup long ago. It is a very special find. Do you like shiny rocks?
Early Reader · Change the reading level on the articleStilbite is a pretty rock. It can be many colors. Some are pink or white. Some are blue or red. It can shine like a pearl. Do you like shiny rocks?
Early Reader · Change the reading level on the articleThere is a forest made of stone. The tall rocks look like trees. They grew from an old sea. Wind and water shaped them. You can walk among them. Do you want to see the stone trees?
Early Reader · Change the reading level on the articleBig storms can push the sea. The wind blows the water fast. It pushes the water toward the land. This can cause a flood. It can wash over the beach. Have you seen big waves?
Early Reader · Change the reading level on the articleRocks sit in many layers. These layers lay flat. They pile up one by one. They tell us about long ago. These rocks can hold coal. They can even hold water. We can learn so much from them. Do you like rocks?
Early Reader · Change the reading level on the articleRocks come in many layers. Some layers look the same. Some layers have old bones in them. These layers tell a story. We can see them in the ground. Can you find a rock layer?
Early Reader · Change the reading level on the articleThese clouds look like big gray clumps. They often move in lines or waves. They can bring light rain or snow. These clouds can also make the sun feel less hot. They help keep the land cool. Do you see them in the sky?
Early Reader · Change the reading level on the articleThe air has many layers. One layer is high up. It is very dry there. It helps keep us safe. It has a special shield. Can you look up at the sky?
Early Reader · Change the reading level on the articleSome mountains are big volcanoes. They are made of many layers. These layers come from old lava. They can pop and blow with a loud bang. This can make a lot of ash. It looks like gray snow. Have you ever seen a volcano?
Early Reader · Change the reading level on the articleEarth has many layers of rock. These layers sit one on top of another. Some layers look like bands of color. They can be thick or thin. You can see them in big cliffs. They tell us about the past. Can you find layers…
Early Reader · Change the reading level on the articleThese clouds look like flat gray sheets. They stay low in the sky. They can bring light rain or snow. They make the sky look very gray. It is a cozy, cloudy day. Do you like the clouds?
Early Reader · Change the reading level on the articleA stream is moving water. It flows in a path. Rain and snow help it flow. It gives fish a home. It is very pretty. Do you like to watch water?
Early Reader · Change the reading level on the articleThe stream bed is the bottom of a river. It can have rocks or sand. Plants grow in the water there. It helps hold water for us. It is a busy place. Do you like to look at small rocks?
Early Reader · Change the reading level on the articleWater moves in streams. It flows from the land. It can come from rain. It can come from the ground. This water helps all living things. Do you like to see a river?
Early Reader · Change the reading level on the articleRocks in the ground can tilt. They are not always flat. We can see which way they lean. We can see how steep they are. This helps us learn about our Earth. Do you want to look at rocks too?
Early Reader · Change the reading level on the articleA hot spring shoots water up. It is in a place called Iceland. The water jumps high in the air. It happens many times each day. You can go see it. It is fun to watch. Do you like water?
Early Reader · Change the reading level on the articleTiny living things make rocks. They live in water. They trap sand to grow. They grow in many layers. These rocks tell us about old life. Can you see the lines?
Early Reader · Change the reading level on the articleStromboli is a small island. It has a big volcano. The volcano makes bright fire. People can see it from the sea. It is like a light. Do you like to see bright lights?
Early Reader · Change the reading level on the articleRocks can bend and break. They move deep in the ground. Sometimes they make big mountains. This helps us find gold. It also helps us build roads. We study how they move. Do you like rocks?
Early Reader · Change the reading level on the articleA long time ago, the Earth was very cold. Ice covered the whole world. This lasted for a very long time. It helps us learn about our home. It is a big mystery. Do you like the snow?
Early Reader · Change the reading level on the articleSome islands are near the cold south. They are in the ocean. Some islands have ice. Others have trees. This place helps the world stay cool. Can you find them on a map?
Early Reader · Change the reading level on the articleThe subarctic is a very cold place. It is near the top of the world. Many trees grow there. Some animals like bears live there too. It can be hard to build roads in the cold ground. Do you like the snow?
Early Reader · Change the reading level on the articleSome places are very cold. The winters are long. The summers are short. The ground stays frozen. It is hard for plants to grow. Do you like the snow?
Early Reader · Change the reading level on the articleThe ground moves in big pieces. One piece sinks deep down. It goes under another piece. This makes big mountains. It can also make volcanoes. This helps make our world. Can you feel the ground shake?
Early Reader · Change the reading level on the articleSome volcanoes live under the sea. They can blow hot rock out. This rock cools fast in the water. It looks like soft pillows. These spots help sea life grow. Do you want to see the deep sea?
Early Reader · Change the reading level on the articleSome parts of the world are warm. These places have hot summers. The winters are mild and not too cold. You can find palm trees here. Many tasty fruits grow in this sun. Do you like warm weather?
Early Reader · Change the reading level on the articleA big land runs across Africa. It has tall trees and grass. Big animals like lions live there. Some people grow food on this land. It is a very special place. Do you like big animals?
Early Reader · Change the reading level on the articleA big rock hit the Earth. It made a giant hole. This hole has many metals in it. We use these metals for things. It is a very old place. Do you like rocks?
Early Reader · Change the reading level on the articleSome rocks are special. They are called sulfates. They can be found in the ground. Some are very hard. Some have water in them. These rocks are neat to see. Do you like rocks?
Early Reader · Change the reading level on the articleSome rocks are special. They have tiny parts inside. These parts help us find metal. We use this metal for many things. It is very cool! Do you like rocks?
Early Reader · Change the reading level on the articleA big piece of land moves. It is in a place called Southeast Asia. This land moves very slowly. It can make the ground shake. This helps us learn about our world. Do you like to learn about Earth?
Early Reader · Change the reading level on the articleMany big tigers live in a forest. This forest is near the water. It has many small islands. It is a home for birds and big crocodiles. We must help keep it safe. Do you like tigers?
Early Reader · Change the reading level on the articleSometimes you see extra suns. They look like bright spots. They sit beside the real sun. These spots come from tiny ice. They make pretty colors. It is a fun sight. Have you seen them?
Early Reader · Change the reading level on the articleA supercell is a big storm. It is a storm that spins. These storms can last for a long time. They can bring big hail and wind. They can even make a tornado. Have you ever seen a big storm?
Early Reader · Change the reading level on the articleLong ago, all land was one. It was one giant piece of land. The land parts moved apart. Now, they are far away. This makes our world look the way it does. Can you find the land on a map?
Early Reader · Change the reading level on the articleA supervolcano is a very big volcano. It can blow up with a loud pop. This makes a lot of ash. The ash can change the air. It is a very big thing to see. Do you think it is big?
Early Reader · Change the reading level on the articleWeather maps show the sky. They use signs to tell us things. A big H means it is sunny. A big L means it might rain. These maps help us get ready. Do you like the sun?
Early Reader · Change the reading level on the articlePeople watch the weather every day. They check the wind and rain. They also check the heat. This helps us know what is coming. It keeps us safe. Do you like to watch the clouds?
Early Reader · Change the reading level on the articleRivers carry tiny bits of dirt. The moving water lifts them up. These small bits stay in the water. They do not touch the bottom. This helps the river move things. Can you see the river move? It is very cool to watch!
Early Reader · Change the reading level on the articleEarthquakes make waves in the ground. These waves move through the earth. They move slower than other waves. These waves cannot move through liquid. They can move through solid rock. This helps us learn about our…
Early Reader · Change the reading level on the articleSylvite is a special kind of salt. It can look white or yellow. It tastes salty and a bit bitter. We use it to help plants grow. It is found in very dry places. Can you find it in the ground?
Early Reader · Change the reading level on the article