Salt flat
Salt flats are big, white lands. They are in dry places. Sun dries up the water. This leaves salt on the ground. It can look very bright. Can you see the white salt?
Early Reader · Change the reading level on the articleEarth Science articles — Page 25
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 25 of 30
Salt lake
Some lakes have a lot of salt. They are not like the water we drink. This salt stays in the water. It can be found in many places. It is a neat thing to see. Have you ever seen a salty lake?
Early Reader · Change the reading level on the articleSalt marsh
A salt marsh is a wet land. It is by the sea. The ocean water comes in and out. Many plants grow in the mud. Fish and birds like to live there. It is a busy place. Do you like the beach?
Early Reader · Change the reading level on the articleSan Andreas Fault
A big crack is in the ground. It runs through California. The land moves along the crack. This can make the ground shake. It is very big. Do you want to see it?
Early Reader · Change the reading level on the articleSanta María (volcano)
Santa Maria is a big volcano. It is in a place called Guatemala. It can blow out hot rock and ash. This can change the land around it. It is a very powerful mountain. Do you want to see it?
Early Reader · Change the reading level on the articleSantorini caldera
Santorini is a group of islands. Much of it is under the sea. It has high walls of rock. Some small islands sit in the middle. It is a very special place. Do you want to see it?
Early Reader · Change the reading level on the articleScărișoara Cave
This is a big cave of ice. It is in the mountains. The ice is very thick. It stays cold inside. Small bugs live there too. It is a wonder to see. Do you like the cold?
Early Reader · Change the reading level on the articleScheelite
This is a special rock. It can be many colors. Some look like gold. Some look like pink. It can even glow bright blue! This helps people find gold. Do you like shiny rocks?
Early Reader · Change the reading level on the articleScotia plate
A big piece of the sea floor moves. It sits between two lands. It is mostly under the water. Some small islands sit on top. It helps the world stay cool. Do you like the sea?
Early Reader · Change the reading level on the articleScree
Rocks fall from high cliffs. They pile up at the bottom. These piles are called scree. They can be very steep. You might see them on mountains. Have you seen a pile of rocks?
Early Reader · Change the reading level on the articleSea breeze
The wind blows from the sea. It happens in the afternoon. The land gets very hot. This pulls the cool air in. It helps you stay cool. Can you feel the wind?
Early Reader · Change the reading level on the articleSea cave
Waves hit the rocks by the sea. The waves make small holes. The holes get big and deep. Now you have a sea cave! These caves are fun to see. Have you seen one?
Early Reader · Change the reading level on the articleSea level rise
The sea is getting higher. It happens because ice is melting. The warm water also grows. This can cause floods near the beach. We must learn how to help. Can you see the ocean?
Early Reader · Change the reading level on the articleSea surface microlayer
A thin skin sits on the sea. It is where the air meets the water. It helps tiny sea life grow. This skin is very important for our world. Do you like the ocean?
Early Reader · Change the reading level on the articleSea surface temperature
The ocean has a top layer. This layer is the water near the top. It can be warm or cold. This water helps the air above it. It also helps make storms. Do you like the beach?
Early Reader · Change the reading level on the articleSeawater
This is water from the sea. It has salt in it. This makes it taste salty. The salt makes it heavy. It is not like the water in a sink. It helps many things live. Do you like the sea?
Early Reader · Change the reading level on the articleSedimentary structures
Rocks can have many shapes. Water and wind make patterns in sand. These patterns stay in the rock. They tell us where the water was. Do you see the lines in the rocks?
Early Reader · Change the reading level on the articleSedimentation
Small bits sink in water. They fall to the bottom. This happens because of gravity. These bits can make new rocks. This helps the earth grow. Can you see bits in a pond?
Early Reader · Change the reading level on the articleSediment gravity flow
Sand and mud can slide down. They move in big flows. These flows move deep in the sea. They help make the ocean floor. They even help make oil. It is a big move! Do you want to see more?
Early Reader · Change the reading level on the articleSediment transport
Tiny bits of sand and mud move. Wind can blow them. Water can carry them too. Moving water makes ripples. Gravity pulls them down hills. This helps make new land. Can you find sand near you?
Early Reader · Change the reading level on the articleSeismic intensity scales
The ground can shake. This shaking is called an earthquake. It can move the dirt and rocks. It can even shake our houses. People use maps to see where it shook. It helps us stay safe. Have you felt the ground move?
Early Reader · Change the reading level on the articleSeismic magnitude scales
Earthquakes make the ground shake. Scientists measure how big they are. They use special tools to see the shakes. This helps us stay safe. Can you feel the ground move?
Early Reader · Change the reading level on the articleSeismic refraction
We can see under the ground. We send shakes into the dirt. The shakes move through the soil. They hit hard rock. This helps us see what is deep down. It helps us build things. Can you imagine seeing underground?
Early Reader · Change the reading level on the articleSeismic tomography
Earth has a hidden inside. We use shakes to see it. Shakes move through the ground. They change as they go. This helps us make a map. It shows us what is deep down. Can you imagine seeing inside the Earth?
Early Reader · Change the reading level on the articleSeismic wave
Shaking moves through the ground. These shakes come from big quakes. They can travel deep inside the Earth. They can also move on top. They help us learn about our world. Can you feel the ground shake?
Early Reader · Change the reading level on the articleSeismic zone
Some places have many quakes. These places are in a line. One big line is near the sea. It is called the Ring of Fire. It makes the ground shake. This is how the Earth moves. Do you feel the ground shake?
Early Reader · Change the reading level on the articleSemi-arid climate
Some places are very dry. They do not get much rain. You might see short grass or small bushes. Trees do not grow well here. It is not a desert, but it is dry. Do you like dry places?
Early Reader · Change the reading level on the articleSequence (geology)
Rocks can grow in layers. These layers stay together in a group. They sit between two gaps in the ground. This helps us see how the earth changed. It is a big puzzle. Can you find rocks in the dirt?
Early Reader · Change the reading level on the articleSequence stratigraphy
The sea goes up and down. It moves over the land. It moves over the rocks. This leaves layers of sand. These layers tell a story. We can read them. Do you like looking at rocks?
Early Reader · Change the reading level on the articleSeries (stratigraphy)
Rocks sit in many layers. These layers tell us about time. Some layers are very old. They show us how the world changed. We use these layers to learn. Can you find a rock?
Early Reader · Change the reading level on the articleSerpentine subgroup
Some rocks look like snakes. They can be green or brown. They are very smooth. People use them to make pretty jewelry. Some even make art. Do you like shiny stones?
Early Reader · Change the reading level on the articleSerpentinite
This is a special rock. It looks like snake skin. It can be used to make art. Some people use it for lamps. It helps us learn about life. Do you like rocks?
Early Reader · Change the reading level on the articleSerpentinization
Some rocks change when they get wet. Water goes into the rock. This makes the rock grow. It can even make heat. This helps tiny life grow in the sea. Do you like rocks?
Early Reader · Change the reading level on the articleSeven Coloured Earths
The ground has many bright colors. It looks like stripes of sand. Some parts are red and blue. This place is in Mauritius. It is very pretty to see. Can you find all the colors?
Early Reader · Change the reading level on the articleShadow zone
Earth has a hidden part. Some waves cannot pass through it. This is because the middle is liquid. The waves stop when they hit the liquid. This helps us learn about our world. Can you imagine a hidden sea deep inside…
Early Reader · Change the reading level on the articleShale
Shale is a type of rock. It is made from old mud. It can break into thin layers. This rock can be grey or red. It can even be black. Do you like to look at rocks?
Early Reader · Change the reading level on the articleShear (geology)
Rocks can move and change shape. Deep in the ground, pressure pushes on them. Sometimes the rocks break. Sometimes they stretch out long. This helps us learn about our Earth. Can you find a rock?
Early Reader · Change the reading level on the articleShear zone
Rocks can move and slide. This happens deep in the ground. The rocks slip past each other. This can make a crack. It can also make rocks flow. It is a big change. Do you like rocks?
Early Reader · Change the reading level on the articleShield (geology)
Some parts of the Earth are very old. These areas are mostly flat. They are made of hard rock. These rocks stay still for a long time. They are found on every land. Do you want to see them?
Early Reader · Change the reading level on the articleShield volcano
A shield volcano is a big mountain. It looks like a shield on the ground. Hot, runny lava flows out of it. The lava spreads out very far. This makes the mountain wide and flat. It is a very large place. Do you want…
Early Reader · Change the reading level on the articleShingle beach
A shingle beach is made of rocks. These rocks are smooth and round. The waves make them that way. They make a steep slope. You can find many types of rocks there. It is a fun place to look! Do you like smooth rocks?
Early Reader · Change the reading level on the articleShoal
A shoal is a place where water is shallow. It is a long ridge of sand. The sand stays near the top of the water. This can be hard for big boats. It is a neat thing to see. Have you ever seen a sandbar?
Early Reader · Change the reading level on the articleSiberian Traps
{ "text": way long ago, big fires happened. Hot, melted rock covered the land. This rock made hills like stairs. This changed the world for many living things. It was a very big event. Do you like looking at rocks?",…
Early Reader · Change the reading level on the articleSichuan Basin
This place is a big, low land. Mountains are all around it. Many people live there. They grow lots of rice. It is a special place. Can you find it on a map?
Early Reader · Change the reading level on the articleSiderite
This is a special rock. It has iron inside. It can be brown or black. People use it to make steel. It is found on Earth and Mars. Do you like rocks?
Early Reader · Change the reading level on the articleSilicate mineral
Most rocks are made of tiny parts. These parts build the Earth. They make up most of the ground. They can be clear or white. They can even have colors. Do you like to collect rocks?
Early Reader · Change the reading level on the articleSiliceous ooze
Tiny things live in the sea. They make small shells. These shells fall to the bottom. They make a soft floor. It is like a thick blanket. Do you want to see it?
Early Reader · Change the reading level on the articleSill (geology)
Hot, melted rock moves under the ground. It slides between old rock layers. This makes a flat sheet. It stays in the same direction as the layers. It can even hold gold. Can you find rocks in layers?
Early Reader · Change the reading level on the article