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 10 of 30
Some rocks are special. These are called carbonate minerals. They can be many colors. Some are blue or green. They are found in the ground. They are very pretty to see. Have you seen a shiny rock?
Early Reader · Change the reading level on the articleSome rocks are made of tiny bits. These rocks can be hard. They can even make the walls in your home. We use them for concrete. They help us learn about the old Earth. Do you like rocks?
Early Reader · Change the reading level on the articleWe have a limit on air. This limit helps keep Earth cool. It tells us how much gas we can use. This helps us plan for the future. We must work together. Can you help keep our world safe?
Early Reader · Change the reading level on the articleThings move in a big circle. Carbon moves from the air to the land. It also moves into the sea. It helps all living things grow. This circle keeps our world healthy. Can you see the green plants?
Early Reader · Change the reading level on the articlePlants help our world. They take stuff from the air. They use it to grow. This keeps the air clean. It helps us all. Do you like trees?
Early Reader · Change the reading level on the articleA big piece of land moves slowly. It sits under the sea. It makes big mountains and fire mountains. These mountains can shake the ground. This helps us learn about our world. Do you want to see the maps?
Early Reader · Change the reading level on the articleThere is a big cave in New Mexico. It has many huge rooms. You can ride an elevator down. It is very pretty inside. We can see cool rocks there. Do you want to go see it?
Early Reader · Change the reading level on the articleThis is a special salt. It can be white or red. It comes from salty sea water. It helps plants grow big. It is very neat to see! Do you like salt?
Early Reader · Change the reading level on the articleThis is a red stone. It can look orange too. People use it for pretty things. They make beads and rings. It is a very special stone. Do you like red stones?
Early Reader · Change the reading level on the articleThere are many volcanoes in a line. They are in the West. Some are very tall. Many people live near them. We must watch them closely. Do you see the big mountains?
Early Reader · Change the reading level on the articleThis rock helps us make tin. It is found in the ground. People dig it up from mines. We use it for many things. It is a very special find. Do you like shiny rocks?
Early Reader · Change the reading level on the articleRocks can break into tiny bits. This happens when the ground moves. The small pieces stick together. It makes a new kind of rock. It is very strong. Do you like looking at rocks?
Early Reader · Change the reading level on the articleThere is a very deep cave in Mexico. Many birds live in the cave walls. They fly in circles in the sky. Some birds dive down through the air. It is a big, dark hole. Can you imagine flying like a bird?
Early Reader · Change the reading level on the articleThere are many caves in this place. They are near two lands. Some caves have ice on the floor. One cave has white rocks that look like stars. You can visit these caves too. Do you like dark caves?
Early Reader · Change the reading level on the articleBig caves are under the ground. A river made them long ago. They stay cool and wet inside. You can ride a small train to see them. It is a fun place to visit. Do you want to go inside?
Early Reader · Change the reading level on the articleThe Celebes Sea is a big, blue sea. It has warm, clear water. Many fish live there. You might see a whale or a turtle. It is a busy place for boats. It is very pretty to see. Can you swim in the sea?
Early Reader · Change the reading level on the articleThe Celtic Sea is a big sea. It is near Ireland. Many fish live in the water. You might see a whale there. It is a very busy place. Do you like the sea?
Early Reader · Change the reading level on the articleTiny bits of sand can stick together. Water carries bits of rock through the ground. These bits grow around the sand. They make small bridges. This turns sand into hard rock. It takes a long time. Do you like rocks?
Early Reader · Change the reading level on the articleA cenote is a deep hole. It is filled with water. The water comes from rain. It helps people find water to drink. These holes are very pretty. Do you want to see one?
Early Reader · Change the reading level on the articleA big ridge sits under the sea. It is in the Indian Ocean. This ridge is very long. It helps move parts of the earth. We cannot see it from land. Can you imagine a mountain under the sea?
Early Reader · Change the reading level on the articleThere are many round mountains in France. They were made by fire from the earth. These hills are very old. You can see them from far away. They are a special place to visit. Do you like big hills?
Early Reader · Change the reading level on the articleThis is a pretty stone. It can be many colors. Some stones look like blue ice. Some stones look like green moss. People use them for jewelry. They are very beautiful. Do you like colorful stones?
Early Reader · Change the reading level on the articleThis rock is a special kind. It looks like bright gold. It has copper inside. We use copper for many things. It helps us every day. Can you find it?
Early Reader · Change the reading level on the articleChalk is a white rock. It is very soft. Tiny sea life made it long ago. It can be used to draw. Do you like to draw with chalk?
Early Reader · Change the reading level on the articleThe ocean has a very deep spot. It is at the bottom of the sea. It is the deepest place on Earth. This helps us learn about the world. Do you want to see it?
Early Reader · Change the reading level on the articleBig floods changed the land. Long ago, huge lakes broke. The water swept over the ground. It washed away the dirt. Now the land is bare. It looks very different. Can you see the dry paths?
Early Reader · Change the reading level on the articleA man named Charles studied the air. He worked on a big mountain. He found that the air was changing. This helps us know about our world. It is very good work. Do you like to look at the sky?
Early Reader · Change the reading level on the articleCharles Richter studied the earth. He helped find how big shakes are. He made a way to measure them. This helps keep people safe. He was a very smart man. Do you like to learn about the earth?
Early Reader · Change the reading level on the articleA man named Buys Ballot studied the weather. He looked at the wind. He learned how the wind moves. This helps us know the weather. He was a very smart man. Do you like to watch the clouds?
Early Reader · Change the reading level on the articleA big rock hit the Earth. It made a giant hole. This hole is under the ground. It changed the world a long time ago. It even changed how animals lived. Can you imagine a rock that big?
Early Reader · Change the reading level on the articleChimborazo is a big mountain. It is in a place called Ecuador. The top has white ice. This ice gives water to people. It is a very special mountain. Can you see the white ice?
Early Reader · Change the reading level on the articleChimney Rock is a very tall rock. It stands high in the land. Long ago, people used it to find their way. It still helps us see where we are. It is a special place to visit. Do you like big rocks?
Early Reader · Change the reading level on the articleThese are big caves in a far land. They are made of old rock. One cave has bright blue water. You can see the blue pool. It is a very special place. Do you like to explore caves?
Early Reader · Change the reading level on the articleSome rocks are very green. This green color comes from a mineral. It can look like tiny blue-green crystals. You can find it in many rocks. It is even in clay. Do you like the color green?
Early Reader · Change the reading level on the articleThere are many round hills. They look like big mounds. Green grass grows on them. In the dry time, the grass turns brown. Then they look like chocolate! They are very pretty to see. Do you like chocolate?
Early Reader · Change the reading level on the articleChromite is a dark rock. It is black and shiny. We use it to make strong steel. This helps make things we use every day. It is very special. Do you like shiny rocks?
Early Reader · Change the reading level on the articleRocks tell us about the past. They sit in layers. Some layers are very old. We use fossils to find the age. This helps us learn about Earth. It is like a big puzzle. Can you find old rocks?
Early Reader · Change the reading level on the articleSome stones are very pretty. They can be green or yellow. One kind looks like a cat eye. It has a bright line of light. This stone is very hard. Do you like shiny stones?
Early Reader · Change the reading level on the articleThe Chukchi Sea is a cold sea. It is in the far north. Much of it has ice. It is a home for whales. Many animals live there. Do you like the cold?
Early Reader · Change the reading level on the articleA volcano can make a hill. Hot rocks fly into the air. They fall down in a pile. This makes a steep shape. It looks like a cone. Do you want to see one?
Early Reader · Change the reading level on the articleThis is a bright red rock. It comes from deep in the ground. It is found near hot springs. People use it to make red paint. We must be careful with it. It can make us sick. Do you like the color red?
Early Reader · Change the reading level on the articleA cirque is a big bowl in a mountain. It looks like a giant chair. Ice makes this shape over a long time. Sometimes a small lake sits in the bowl. It is very pretty to see. Do you like big mountains?
Early Reader · Change the reading level on the articleHigh clouds look like small white bits. They can look like tiny ripples. They stay very high in the sky. These clouds can look red at sunset. They are very pretty to see! Do you like looking at clouds?
Early Reader · Change the reading level on the articleHigh clouds look like a thin veil. They are made of tiny ice. Sometimes they make a bright ring around the moon. These clouds can mean rain is coming soon. Look up at the sky! Do you see them?
Early Reader · Change the reading level on the articleHigh clouds look like a thin veil. They are very soft and flat. The air rises to make them. You might see a bright ring. This happens when the sun shines through. They can look thick or thin. Can you see them in the sky?
Early Reader · Change the reading level on the articleThere is a place with strange rocks. They look like a city. Rain and water shaped them. The rocks have funny shapes. You can see them in Spain. It is a cool place to visit. Do you like big rocks?
Early Reader · Change the reading level on the articleClair was a smart man. He studied the Earth. He found how old our world is. He also found bad metal in the air. This metal can hurt us. He helped make the air safe. Do you like to learn?
Early Reader · Change the reading level on the articleSome rocks are made of small bits. These bits come from old rocks. The bits can be tiny or big. They stick together to make new rock. This is how the Earth changes. Can you find a rock outside?
Early Reader · Change the reading level on the article