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Earth Science articles — Page 19

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 19 of 30

Lepidolite

This rock can be pink or purple. It looks like a soft rose color. It is found deep in the ground. We use it to find new things. It is very pretty to see. Do you like pink rocks?

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Leviathan Cave

A big cave is in Kenya. It was made by hot, red lava. The cave is very long. It is the longest one in Africa. You can explore it! Can you imagine being in a deep cave?

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Light pillar

You might see a tall beam of light. It looks like a glowing pole. Tiny bits of ice in the air act like mirrors. They reflect light from the sun or streetlights. It is a pretty sight to see. Have you ever seen a light…

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Light pollution

Too much light can be a problem. It happens at night. Bright lights hide the stars. This can hurt plants and animals. It can even make it hard to sleep. Can you see the stars tonight?

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Limonite

This is a brown rock. It is found in wet places. People use it to make iron. It can also make paint. It helps us make batteries. Do you like brown rocks?

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Lineation (geology)

Rocks can have lines in them. These lines show how rocks move. Some rocks look like long sticks. They can look like pulled candy. This helps us learn about the Earth. Can you find lines in a rock?

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Lithostratigraphy

Earth has many rock layers. These layers sit on top of each other. The top layer is the newest. The bottom layer is the oldest. These layers tell a story. Can you find rocks in your yard?

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Littoral zone

The shore is a busy place. It is where land meets water. Many plants and animals live here. This place helps keep our world healthy. It is a very special spot. Do you like the shore?

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Llullaillaco

This is a very big mountain. It is a volcano. It is very high in the sky. It is near a dry desert. It is a special place for mice. Do you like big mountains?

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Loam

Loam is a special kind of soil. It has sand, silt, and clay. It holds water and food for plants. This helps many plants grow well. It is great for gardens. Do you like to dig in the dirt?

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Loellingite

This is a shiny rock. It looks like silver. It can be found in the ground. It gets a dark color in the air. This rock is quite heavy. It can even pull on magnets. Can you find a shiny rock?

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Loess

Wind blows dust across the land. This dust makes a special soil. It is pale yellow. This soil helps plants grow well. It is very soft. Can you find yellow dust?

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Loess Plateau

The land in China is very big. Strong winds blow dust here. The dust makes the ground thick. Many people live on this land. It is a special place to see. Do you like the wind?

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Long Island Sound

Long Island Sound is a big body of water. It sits between two lands. One side is New York. The other side is Connecticut. It has salt water and fresh water. It is a home for many fish. Do you like the water?

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Love wave

Earth can shake during an earthquake. These waves move the ground side to side. They travel along the top of the Earth. You can feel them move. They can even shake things far away. Can you feel the ground move?

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Lower mantle

Deep inside our Earth is a big layer. It is very hot there. It is also very heavy. This layer moves very slowly. It helps make our world work. Can you imagine being that deep?

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Lurgrotte

This is a very big cave. Rivers flow inside it. One river goes in. Another river comes out. People can visit the cave. It has big rooms. Can you imagine being in a cave?

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Magma chamber

Hot, liquid rock sits deep in the ground. It is a big pool. This pool can push up to the top. It can make a volcano erupt. It is very hot down there. Do you want to see a volcano?

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Magnesite

Magnesite is a special rock. It can be used for art. People make pretty beads with it. It also helps make very hot fires. Some people even found it on Mars! Do you like looking at rocks?

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Magnetic anomaly

The Earth has a pull. This pull changes in some spots. Rocks under the ground make it change. It helps us find things. We can find rocks with metal. Can you feel the pull?

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Magnetite

Magnetite is a dark rock. It pulls on magnets. This rock is very strong. It can even act like a magnet itself. Some black sands on a beach have it. Can you find a magnet?

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Magnetostratigraphy

Rocks can tell us about the past. They show how the Earth's pull changes. Sometimes the pull points north. Sometimes it points south. This helps us know how old rocks are. It is like a secret code. Can you find a rock?

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Mainshock

Big shakes can happen in a row. A small shake may come first. Then comes the biggest shake. It is the main one. Smaller shakes often come after. They help the ground settle. Do you feel the ground move?

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Malachite

This is a bright green stone. It is found deep in the ground. People use it to make pretty things. It can even be used as paint. Do you like the color green?

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Malaspina Glacier

This is a very big ice field. It is in Alaska. It is as big as a whole state. The ice helps us learn about our world. It is a special place. Do you like the cold?

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Mallos de Riglos

Big rocks stand tall in Spain. They look like giant mallets. They grew from bits of old stone. Now, they are very high. People love to climb them. It is a fun place to go. Do you like to climb rocks?

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Mammoth Cave National Park

This is a very big cave. It is in Kentucky. It has many long paths. You can walk in the cave. It is a special place to see. Do you want to go inside?

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Manganese nodule

Small rocks sit on the sea floor. They look like hen eggs. These rocks hold many metals. People may want to use them. They grow very, very slowly. Can you imagine a rock that grows that slow?

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Mantle convection

The ground under us moves. Deep inside Earth, it is very hot. This heat moves things in a slow circle. This makes the ground move a little bit. It can even make volcanoes. Do you think the ground is moving now?

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Mantle (geology)

A mantle is a big layer. It is deep inside a planet. It is made of rock or ice. It is the largest part. This layer helps make a planet. Can you find it?

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Mantle plume

Hot parts of the Earth rise up. They look like big bubbles. These bubbles bring heat to the top. This heat can make volcanoes. They make islands in the sea. Can you imagine a hot bubble under your feet?

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Marine regression

Sometimes the sea goes down. The water leaves the land. New land shows up. This can happen when it gets very cold. It changes how things live. Do you like the beach?

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Marine sediment

Tiny bits of sand and dirt sit on the ocean floor. Some come from rivers. Some come from tiny sea life. They pile up very slowly. This helps small sea animals live there. Do you like the beach?

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Marine transgression

The sea can rise up. It moves onto the land. This can happen if the land sinks. It can also happen if the ocean gets more water. This changes where we walk. Do you like the beach?

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Marine weather forecasting

People watch the sky over the sea. They want to know about the wind. This helps ships stay safe. It keeps them away from big storms. We use tools to help us see. Do you like the ocean?

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Mary Anning

Mary Anning found old bones. She looked on the cliffs. She found bones in the rocks. These bones help us learn. They show us long ago life. Do you like looking for bones?

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Mass wasting

Rocks and dirt can move down hills. Gravity pulls them down. Some move very fast. Some move very slow. This can change the land. It can even bend trees. Have you seen a steep hill?

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Matthew Fontaine Maury

Matthew was a man who loved the sea. He studied the wind and the water. He made maps to help ships sail. These maps made trips much faster. His work helped many sailors. Do you like to look at maps?

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Mauna Kea

Mauna Kea is a big volcano. It is on a far island. It is very tall. It goes deep under the sea. It is a special place to look at stars. Do you want to see the stars?

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Maurice Ewing

Maurice Ewing studied the deep sea. He looked at the ocean floor. He also studied how the Earth moves. His work helps us know our world. He was a very smart man. Do you like the ocean?

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Mayon

Mayon is a big volcano. It is in a place called the Philippines. The mountain has a very pretty shape. It looks like a perfect cone. It is a very busy volcano. Do you like big mountains?

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Megathrust earthquake

Big parts of the Earth move. One part slides under another. This can cause a huge shake. The shake can make big waves in the sea. These waves move fast. They can travel far. Have you ever felt the ground shake?

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Megatsunami

Giant waves can be huge. They happen when rocks fall into water. This makes a big splash. The splash makes a giant wave. These waves are much bigger than normal ones. Have you ever seen a big splash?

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Melnik Earth Pyramids

Big rocks look like tall towers. They look like giant mushrooms too. Rain and wind made these shapes. They are in a place called Bulgaria. You can see them there. Do you want to visit them?

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Menengai

Menengai is a giant volcano. It is in a place called Kenya. The ground here is very good for farms. It helps food grow well. It is a big and special place. Do you want to see it?

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Mesoarchean

Long ago, the Earth was very hot. Small life lived in the sea. The air was different back then. Big pieces of land moved too. It was a busy time. Can you imagine it?

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Mesopelagic zone

The deep ocean is dim. It is like twilight. Some fish make their own light. This helps them see. Many animals swim up at night. They go down when the sun comes up. Can you imagine living in the dark?

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Mesoproterozoic

Long ago, the Earth was changing. Big pieces of land moved around. They broke apart and came back together. New kinds of life began to grow. This helped life get more complex. It was a very busy time! Can you imagine…

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