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Earth Science articles — Page 13

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 13 of 30

Dolomite (mineral)

Dolomite is a special kind of stone. It can be white or pink. Some parts look like pretty crystals. People use it to help plants grow. It can even help make glass. Do you like looking at rocks?

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Dolomite (rock)

Dolomite is a hard rock. It can look like sugar. It is often a dull yellow color. This rock helps us find oil. It is a very cool find! Do you like rocks?

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Doñana National Park

Doñana is a big park in Spain. It has wet marshes and sand. Many birds fly there to rest. Some rare cats live in the wild too. It is a special place for animals. Do you like seeing birds?

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Don Walsh

Don Walsh loved the deep ocean. He went to the very bottom. It was a very deep place. He showed us new things. He was a great explorer. Do you like the sea?

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Douglas Mawson

Douglas Mawson was a brave man. He went to the cold ice. He looked at rocks and land. He helped us learn about Earth. He was a great leader. Do you like to explore?

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Drizzle

Drizzle is very light rain. The water drops are tiny. They may dry up in the air. This can make the ground stay dry. It is a soft kind of rain. Have you seen tiny rain drops before?

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Drylands

Drylands are places with very little water. They can be very dry. Many people live in these lands. They help us by keeping the air healthy. We must take care of them. Have you seen a dry place?

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Dry season

Some places have a dry season. It does not rain much. The sun stays out for a long time. Some rivers may even dry up. Animals must walk to find water. It is a big change. Do you like sunny days?

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Ductility (Earth science)

Rocks can bend like clay. Some rocks do not snap. They change shape instead. This happens deep in the ground. Heat helps the rocks bend. Do you like to play with clay?

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Dune of Pilat

This is a giant hill of sand. It is in a place called France. It sits by the big blue sea. The sand moves very slowly. It can even push into the trees. It is fun to see! Can you imagine walking on it?

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Dust

Dust is made of tiny bits. It can come from the ground. It can come from your skin. It can even be in space! Dust can blow in big storms. It is everywhere around us. Can you see any dust?

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Dust devil

A dust devil is a spinning wind. It looks like a tall tower. It moves in a circle. The wind picks up dirt. It can be very fast. Most are safe for us. Have you seen one?

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Dvorak technique

People use pictures to see storms. These pictures come from space. They show how strong a storm is. This helps us stay safe. It is like a weather map. Do you like looking at clouds?

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Early Earth

A long time ago, Earth was new. It was very hot and red. Big rocks hit the ground. Soon, the ground cooled down. Water filled up the world. This made a huge ocean. Life began to live in the water. Can you imagine a…

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Earth ellipsoid

The Earth is not a perfect ball. It is a little bit flat. It is wider in the middle. This helps us make maps. It helps us find our way. Do you like to look at maps?

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Earth pigment

People use colors from the ground. These colors come from rocks. They can be red, brown, or black. We use them to make art. They last a very long time. Do you like to paint?

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Earthquake early warning system

Some machines can feel the ground shake. They tell us an earthquake is coming. This helps people stay safe. The machines send a signal to phones. They can also turn on loud sirens. It is a smart way to help. Can you…

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Earthquake forecasting

The ground can shake. Scientists look for patterns. They try to guess when it might shake. This helps us build strong homes. We want to stay safe. Do you feel the ground shake?

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Earthquake prediction

Scientists want to know when the ground shakes. They look for signs in the earth. Some think animals might feel it first. We do not know for sure yet. It is hard to tell. Can you feel the ground shake?

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Earthquake preparedness

The ground can shake sometimes. We can get ready. Keep food and water close. Tie down big things. This helps keep us safe. It is good to be ready. Are you ready to help?

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Earth's energy budget

The Sun sends heat to Earth. This heat helps us live. Some heat goes back to space. We need a good balance. If Earth keeps too much heat, it gets warm. Do you feel the warm sun?

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Earth's rotation

Our big Earth spins around. It turns in a circle. This spin makes day and night. It helps us know when to sleep. It is very cool! Can you feel the spin?

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East African Rift

The ground in Africa is pulling apart. It happens very slowly. This makes big cracks in the land. These cracks make deep lakes. They also make big mountains. Can you find Africa on a map?

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East Asian monsoon

Big winds move air to East Asia. These winds bring lots of rain. This helps plants and food grow. The rain can be very wet. It can also be dry and cold. Do you like the rain?

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East Pacific Rise

The ocean floor has a long rise. It is under the deep blue sea. The ground moves apart here. This makes new ground. It helps many sea animals live. Can you imagine a world under the sea?

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East Siberian taiga

A big forest is in Russia. It has many tall trees. The winters are very cold. Many brown bears live there. We can see them in the woods. Do you like big forests?

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Edaphology

Some people study the ground. They look at how dirt helps plants grow. This helps us grow food. It is very important for us. We can learn a lot from the earth. Do you like to play in the dirt?

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Ediacaran

Long ago, life was very new. Small things lived in the sea. They did not have hard shells. Most of them looked very strange. These life forms help us learn. Can you find them in the rocks?

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Édouard-Alfred Martel

A man named Martel loved caves. He went into many deep holes. He found rivers under the ground. He wrote books about what he saw. He helped us learn about caves. Do you like dark caves?

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Effects of climate change

The Earth is getting warmer. This can change our weather. It can make more big storms. It can also make very hot days. This matters for all living things. Can you help our world stay cool?

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Effects of climate change on agriculture

The weather is changing. This makes it hard to grow food. Sometimes it is too hot. Sometimes there is too much rain. This can hurt our crops. We need food to grow. Can you help us find ways to grow more?

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Effects of climate change on human health

The Earth is getting warmer. This can change our weather. It can make the air hot. Hot weather can make us sick. It also makes it hard to find food. We must take care of our world. Do you like the sun?

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Effects of climate change on oceans

The ocean is getting warmer. This heat can change the water. It can also melt ice. This makes the sea rise. It can hurt fish and sea life. We must help our blue oceans. Do you like the sea?

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Effects of climate change on small island countries

The sea is rising. It can flood small islands. This makes it hard for people to live there. It can also hurt the food they grow. We must help these islands. Do you like the sea?

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Eisriesenwelt

This is a giant ice cave. It is in a big mountain. Snow melts and flows inside. Then the snow freezes into ice. It stays cold even in summer. You can visit this place. Do you like the cold?

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Ekman transport

Wind blows on the sea. It moves the water. The water moves in a new way. It does not go with the wind. This helps fish find food. It is very cool! Do you like the ocean?

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Elastic-rebound theory

Rocks under the ground can bend. They move very slowly. Then they snap back. This snap makes the ground shake. We feel it as a quake. It is a big surprise! Can you feel the ground shake?

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Electrum

Some metal is a mix of two things. It is gold and silver mixed together. It can look pale or bright yellow. People used it to make old coins. It was also used for cups. Do you like shiny things?

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El Torcal de Antequera

This place has strange rocks. They look like a camel or a screw. Many goats live here too. You can walk on the paths. It is a fun place to see. Do you like rocks?

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Emi Koussi

Emi Koussi is a giant mountain. It is a big volcano. It sits in a hot desert. The top has a huge hole. It looks like a giant bowl. This mountain is very special. Can you find it on a map?

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Endorheic basin

Some lakes are in a closed bowl. The water stays in one place. It does not flow to the sea. Instead, the sun dries the water away. This can leave salt behind. It is a special place for water. Do you like to visit lakes?

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Enstatite

This is a special rock. It can be gray or green. Some parts look like bright gems. It is found in space too. We can find it in stars. Do you like shiny rocks?

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Environmental degradation

Our world can change. The air and water can get dirty. This can hurt plants and animals. It can even hurt us. We must help our Earth. Can you help the Earth stay clean?

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Environmental issues

Our world can get sick. Sometimes people cause these problems. It can hurt the water and land. We can work to help nature. This helps us too. Can you help our Earth?

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Environmental remediation

Sometimes the land gets dirty. People must clean it up. They can move the dirt away. They can also use walls to stop the mess. This helps keep our world safe. Do you like clean parks?

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Eoarchean

The Earth was very young. It had no air to breathe. Big rocks fell from space. Some rocks are very old. We find them in the ground. They tell us about our home. Can you find a rock?

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Eocene

A long time ago, the Earth was very hot. There was no ice at the poles. The land and seas were different. Many plants and animals lived then. It was a warm time for our world. Can you imagine a world with no ice?

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Epicenter

An earthquake starts deep in the ground. The epicenter is on top of the Earth. It is right above the start. This spot helps us find the shake. It is very important to know. Can you feel the ground shake?

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