Cotopaxi
Cotopaxi is a big mountain. It is a volcano. It can blow out hot ash. It also has white ice on top. This mountain is very tall. It is in a place called Ecuador. Do you want to see it?
Early Reader · Change the reading level on the articleEarth Science articles — Page 12
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 12 of 30
Crater Lake National Park
Crater Lake is a deep blue lake. It is in a place called Oregon. A big mountain fell in to make it. The water is very blue. It stays blue from rain and snow. Do you like the blue water?
Early Reader · Change the reading level on the articleCraters of the Moon National Monument and Preserve
This place has dark rocks. The rocks came from fire. They look like the moon. It is in Idaho. It is a special place to see. Do you like rocks?
Early Reader · Change the reading level on the articleCraton
Some parts of the Earth are very old. They stay very still and strong. They do not change much. This helps the land stay safe. The ground is very thick here. It is a strong part of our world. Do you like to walk on…
Early Reader · Change the reading level on the articleCratonic sequence
The sea moves over the land. It can rise up high. Then the water goes away. This leaves layers of rock behind. We can see these layers today. They tell a story. Do you like looking at rocks?
Early Reader · Change the reading level on the articleCrenulation
Rocks can change shape. Deep in the Earth, rocks get squeezed. They get squeezed in two ways. This makes new lines in the rock. These lines look like tiny folds. It is like magic! Do you like looking at rocks?
Early Reader · Change the reading level on the articleCretaceous–Paleogene boundary
A long time ago, big things changed. A large rock hit the Earth. This happened a very long time ago. It changed the world for us. Many animals, like dinosaurs, went away. It is a big mystery. Do you like dinosaurs?
Early Reader · Change the reading level on the articleCrevasse
A crevasse is a deep crack in ice. It forms when ice moves. The crack can be very wide. It can be very deep too. We must be careful near them. Can you see the white ice?
Early Reader · Change the reading level on the articleCrocoite
This is a bright red stone. It looks like long red sticks. It is very shiny. Some people collect it. It comes from the ground. Do you like red rocks?
Early Reader · Change the reading level on the articleCross-bedding
Sand can make tilted layers. These layers grow in water or wind. They look like little hills. The wind or water moves the sand. This helps us see where it went. Can you find tilted sand?
Early Reader · Change the reading level on the articleCryolite
This is a rare white stone. It comes from a place called Greenland. It helps us make metal. We use it to make things like cans. It can even make fireworks yellow! It is very special. Do you like shiny stones?
Early Reader · Change the reading level on the articleCrystal twinning
Some crystals grow in pairs. They look like twins. They stick tightly together. This helps them stay strong. It is like a hug. Do you see the shapes?
Early Reader · Change the reading level on the articleCummingtonite
This is a special rock. It has brown parts. It grows in many places. Some rocks change to make it. You can find it in the ground. It is very neat. Do you like rocks?
Early Reader · Change the reading level on the articleCumulus congestus cloud
Some clouds grow very tall. They look like big white towers. These clouds can bring rain. They may even bring snow. They can be very bumpy. Do you see tall clouds in the sky?
Early Reader · Change the reading level on the articleCumulus humilis cloud
Small white clouds float in the sky. They look like little puffs. They often mean the weather is nice. You can see them on a warm day. Do you like looking at them? They are very pretty.
Early Reader · Change the reading level on the articleCumulus mediocris cloud
These clouds look like white cauliflower. They are bright in the sun. They look dark on the bottom. Warm air helps them grow tall. They can turn into storm clouds. Do you see them in the sky?
Early Reader · Change the reading level on the articleCuprite
This is a red rock. It is made of copper. It looks like a red ruby. It is very soft. This means it can break. It is a pretty stone. Do you like red rocks?
Early Reader · Change the reading level on the articleCut bank
A river can change the land. It flows fast on the outside edge. The water eats away at the bank. This makes a steep wall of dirt. It is fun to watch. Do you like to look at rivers?
Early Reader · Change the reading level on the articleDacite
This is a special rock. It comes from hot lava. The lava cools down fast. This makes the rock. It can be grey or black. Have you seen a volcano?
Early Reader · Change the reading level on the articleDaisetsuzan Volcanic Group
These are big mountains in Japan. They are very tall. They have hot water in the ground. This place is a big park. You can see the peaks. It is a pretty place. Do you like mountains?
Early Reader · Change the reading level on the articleDallol (hydrothermal system)
Dallol is a special place. It has bright pools. The water is many colors. It can be green or red. It is very hot there. It is also very dry. Do you like bright colors?
Early Reader · Change the reading level on the articleDavid A. Johnston
David was a man who loved volcanoes. He studied how they work. He helped keep people safe. One day, a big volcano erupted. David was there to watch it. We remember him today. Do you like to learn about nature?
Early Reader · Change the reading level on the articleDeath Valley
Death Valley is a very hot place. It is a big desert. The ground is dry and sandy. It can be very hot in the sun. It is a place to see. Do you like the sun?
Early Reader · Change the reading level on the articleDeccan Traps
Long ago, hot lava flowed in India. It made many big layers of rock. These rocks look like giant stairs. This place is called the Deccan Traps. It is very large and old. Can you imagine seeing such big hills?
Early Reader · Change the reading level on the articleDécollement
Big rocks can slide. They slide on a smooth layer. This layer acts like a slide. The rocks move far away. This changes how the ground looks. Can you imagine rocks sliding?
Early Reader · Change the reading level on the articleDeep-focus earthquake
Some earthquakes happen very deep. They happen far under the ground. They are deep in the earth. This can make the ground stay still. It does not shake as much. Can you feel a shake?
Early Reader · Change the reading level on the articleDeforestation and climate change
Many trees are being cut down. This can make the world too warm. It also makes the air change. This matters for all of us. We can help by planting more trees. Do you like trees?
Early Reader · Change the reading level on the articleDeforestation of the Amazon rainforest
The Amazon is a huge forest. It is the biggest in the world. Many animals live there. People use the forest for food. But people are cutting down many trees. They do this to make room for cows. We must help the…
Early Reader · Change the reading level on the articleDegradation (geology)
Water can change the land. A stream moves over the ground. It can wash bits of dirt away. This makes the land lower. It leaves flat spots behind. The land looks new. Can you see a stream?
Early Reader · Change the reading level on the articleDeposition (geology)
Wind and water move tiny bits of earth. These bits can land in new spots. They build up layers of ground. This helps make new land. It is like building with sand. Can you find sand at the beach?
Early Reader · Change the reading level on the articleDesert climate
Deserts are very dry places. They do not get much rain. Some deserts are very hot. Other deserts can be cold. They have sand or rocks. It is a wild place to see. Do you like the sun?
Early Reader · Change the reading level on the articleDesertification
Some land turns into dry desert. This happens when plants go away. The wind blows the dirt away. This makes it hard to grow food. We can help by planting trees. Can you help the Earth stay green?
Early Reader · Change the reading level on the articleDetachment fault
The ground can move and slide. Big pieces of rock shift. This can change the land. It makes the earth look new. It is a big change. Can you see the hills?
Early Reader · Change the reading level on the articleDetrital zircon geochronology
Tiny grains live in the sand. They are very strong. They do not break easily. These grains tell us about the past. They show us how old the rocks are. Can you find them in the sand?
Early Reader · Change the reading level on the articleDevonian
A long time ago, the world changed. Many fish lived in the sea. They are called the Age of Fishes. New green plants grew on land. They made big forests. Do you like fish?
Early Reader · Change the reading level on the articleDiagenesis
Rocks can change over a long time. They change deep under the ground. Water and tiny bugs help them change. This can even change old bones. It can make fossils too. Do you like looking at rocks?
Early Reader · Change the reading level on the articleDiamond dust
Tiny ice bits float in the air. They look like small diamonds. They shine in the sun. This happens in very cold places. It can look very pretty. Do you like to see things shine?
Early Reader · Change the reading level on the articleDiapir
Some soft things push up through hard rocks. They move up like a lava lamp. Salt can do this too. It can even flow like ice. This helps us find oil. Can you see the shapes?
Early Reader · Change the reading level on the articleDieng Plateau
Dieng is a high place. It is in a land with many mountains. It is often in the clouds. People grow food there. It is a very pretty place. Do you like the clouds?
Early Reader · Change the reading level on the articleDiffuse sky radiation
The sky looks blue. Sunlight hits the air. It bounces around. This makes the sky blue. It also helps plants grow. The light reaches every leaf. Even leaves in the shade get light. Can you see the blue sky?
Early Reader · Change the reading level on the articleDike (geology)
A dike is a wall of rock. It forms in a crack. Hot, melted rock fills the crack. Then the rock gets hard. It looks like a long line. It helps us learn about the Earth. Do you see any rock walls?
Early Reader · Change the reading level on the articleDinosaur Provincial Park
This park has many dinosaur bones. You can find old fossils here. Many kinds of dinosaurs lived here. They lived a long time ago. It is a very special place. Do you like dinosaurs?
Early Reader · Change the reading level on the articleDiopside
Some rocks are a pretty green. They can look like shiny gems. You might find them in the ground. They are very cool to see. Do you like green stones?
Early Reader · Change the reading level on the articleDisaster
A disaster is a very bad event. It can hurt many people. It can break many buildings. Sometimes, people need help from others to stay safe. We can work to be ready. Can you help keep people safe?
Early Reader · Change the reading level on the articleDischarge (hydrology)
A river moves lots of water. We can see how much flows. It can be fast or slow. This helps us know about floods. It is very cool to watch. How fast does your water move?
Early Reader · Change the reading level on the articleDissolved load
Rivers carry tiny bits of rock. These bits are mixed in the water. You cannot see them. They move with the flow. This helps the land change. It is a big job! Can you see tiny bits in a stream?
Early Reader · Change the reading level on the articleDivergent boundary
The ground is moving. Large pieces of land pull apart. Hot, melted rock fills the gaps. This makes new ground. It helps our world grow. Do you want to see more?
Early Reader · Change the reading level on the articleDoggerland
A long time ago, there was land . It was between many places. Animals like mammoths lived there. People lived there too. Now, that land is under the sea. Can you imagine walking there?
Early Reader · Change the reading level on the article