Civil aviation
Many people fly in planes. Some planes carry goods. Other planes carry people. This helps us travel far. It is a big job. Do you like to fly in a plane?
Early Reader · Change the reading level on the articleTechnology articles — Page 27
Explore inventions, engineering, computing and the tools people build to solve problems. Choose an article below; its reading controls let you move between the available levels.
4,107 public articles · Page 27 of 86
Clapboard
Long wood boards cover a house. They sit on top of each other. This helps keep the rain out. They can be white or black. Some wood turns grey in the sun. Do you see wood on a house near you?
Early Reader · Change the reading level on the articleClarence Birdseye
Clarence was a man who loved science. He found a way to freeze food fast. This helps food stay fresh. Now we can eat frozen food easily. It is a great way to eat! Do you like frozen food?
Early Reader · Change the reading level on the articleClarence W. Barron
Clarence was a man who wrote news. He wrote about money. He helped people learn about it. This helped many people. He was very good at his job. Do you like to read news?
Early Reader · Change the reading level on the articleClarín (Argentine newspaper)
Clarín is a big newspaper. It is from a place called Argentina. People read it to learn news. It has been around for a long time. It helps people know what is happening. Do you like to read news?
Early Reader · Change the reading level on the articleClassic Mac OS
Computers use special tools to work. These tools help you use a screen. You can use a mouse to click. You can even drag things around. It makes using a computer easy. Do you like using a computer?
Early Reader · Change the reading level on the articleClaymore
A claymore is a big sword. It comes from Scotland. People used two hands to hold it. It was very heavy. This sword is quite famous. Can you find a picture of one?
Early Reader · Change the reading level on the articleCleanroom
A cleanroom is a very tidy room. It keeps dust away. It also keeps tiny germs out. This helps us make things like computer parts. It is a very special place. Do you like to keep things clean?
Early Reader · Change the reading level on the articleClément Ader
Clément Ader was a man who built things. He wanted to help things fly. He made machines that looked like bats. These machines used steam to move. He was a very smart inventor. Do you like to build things too?
Early Reader · Change the reading level on the articleClipper
A clipper is a fast ship. It uses big sails to move. These ships sail across the sea. They carry things like tea. They help people get things fast. Do you like fast ships?
Early Reader · Change the reading level on the articleClive Sinclair
Clive Sinclair made many new things. He made small tools for math. He also made home computers. These helped many people use them. He was a great inventor. Do you like to invent things?
Early Reader · Change the reading level on the articleClock face
A clock face shows the time. It has numbers on it. Long arms move around the face. Short arms move too. These arms help us know the hour. We use them every day. Can you find a clock?
Early Reader · Change the reading level on the articleClock generator
A clock helps machines work. It tells parts when to move. It keeps everything in time. This helps your computer run fast. It is like a tiny heartbeat. Can you hear a clock tick?
Early Reader · Change the reading level on the articleClock rate
A computer has a beat. This beat helps it work. It tells the parts when to move. Fast beats help it go fast. This helps you play games. It is like a heart. Can you hear the beat?
Early Reader · Change the reading level on the articleClock signal
Computers use a special beat. It helps all parts work together. This beat tells parts when to move. It is like a drum in a band. It keeps everything in time. Do you like music with a beat?
Early Reader · Change the reading level on the articleClosed-circuit television
Cameras watch many places. They send pictures to a screen. These screens stay in one spot. This helps keep people safe. It can help stop bad things. Do you see cameras near you?
Early Reader · Change the reading level on the articleClothes iron
An iron makes clothes smooth. It gets very hot. The heat helps get rid of wrinkles. This helps your clothes look neat. It is a helpful tool. Do you like neat clothes?
Early Reader · Change the reading level on the articleCloud computing
Computers can work over the web. You can use them from anywhere. They help you save your work. They let you work with friends. It is like a big, shared tool. Can you use the cloud today?
Early Reader · Change the reading level on the articleCloudflare
A big company helps the web. They keep websites safe. They help websites work fast. This helps you see things online. It is very helpful for us. Do you use the web?
Early Reader · Change the reading level on the articleCloud storage
You can save your files online. They live on big computers far away. These computers keep your things safe. You can see them from anywhere. It helps us share and save. Do you use the cloud?
Early Reader · Change the reading level on the articleCMOS
Tiny parts make your computer work. These parts live on small chips. They use very little power. This keeps things from getting too hot. They help your watch and phone run. Do you use a computer?
Early Reader · Change the reading level on the articleCNN
CNN is a news channel. It tells us what is happening. It shows news all day and all night. This helps us know about the world. We can watch it on a TV. Do you like to watch the news?
Early Reader · Change the reading level on the articleCoach (bus)
A coach is a big bus. It goes on long trips. It has soft seats for you. You can keep bags under the floor. It is very comfy. Do you like long bus rides?
Early Reader · Change the reading level on the articleCoal-fired power station
Big plants make power from coal. They burn coal to make heat. This heat makes steam. The steam turns a wheel. That wheel makes power for us. It helps us turn on lights. Do you use lights at home?
Early Reader · Change the reading level on the articleCoal mining
People dig for coal in the ground. It is a black rock. We use it to make power. This power helps us turn on lights. It is a big job. Do you want to see how they dig?
Early Reader · Change the reading level on the articleCoaxial cable
This is a special wire. It carries signals to your TV. It keeps the signals safe inside. It helps us see shows. It works very well. Do you see a wire like this?
Early Reader · Change the reading level on the articleCOBOL
Computers use special words to work. These words help big companies. They help banks keep track of money. This helps the world run well. Do you like using computers?
Early Reader · Change the reading level on the articleCochlear implant
Some people cannot hear well. A special tool helps them. It sends signals to the brain. This helps them hear sounds. It can help them hear talk. It is a neat tool. Do you want to hear more?
Early Reader · Change the reading level on the articleCockpit
The cockpit is the front of a plane. It is where the pilot sits. They use tools to fly the plane. This helps keep you safe in the sky. It is a very busy place. Do you want to fly a plane?
Early Reader · Change the reading level on the articleCocoa (API)
Cocoa helps make computer apps. It works on Apple computers. It helps apps look the same. It makes buttons and lists. This makes apps easy to use. Do you like using apps?
Early Reader · Change the reading level on the articleCode-division multiple access
Many people can talk at once. They use special codes. It is like speaking different languages. This helps everyone hear their friend. It works for cell phones. Do you like to talk on the phone?
Early Reader · Change the reading level on the articleCoffeemaker
A coffeemaker makes a warm drink. It uses hot water. The water goes through coffee bits. This makes the drink taste good. It helps people start their day. Do you like warm drinks?
Early Reader · Change the reading level on the articleCofferdam
A cofferdam is a wall in the water. It keeps the water out. This makes a dry spot to work. People use it to fix big ships. It helps us build things safely. Can you imagine working in a dry spot under the sea?
Early Reader · Change the reading level on the articleCogeneration
Some plants make two things. They make power for lights. They also make heat for homes. This uses fuel in a smart way. It does not waste heat. It helps the world. Can you feel warmth from a heater?
Early Reader · Change the reading level on the articleCoke (fuel)
Coke is a hard, grey fuel. It is made from coal. We heat coal without any air. This makes a strong fuel. It helps make iron. It can also heat stoves. Do you like to stay warm?
Early Reader · Change the reading level on the articleCokie Roberts
Cokie Roberts was a writer. She told news stories on the radio. She also spoke on TV. She helped many people learn about the world. She worked very hard. Do you like to listen to news?
Early Reader · Change the reading level on the articleColgate-Palmolive
This company makes things for your home. They make soap to wash your skin. They make paste to clean your teeth. These things help us stay clean. It is good to be clean. Do you brush your teeth every day?
Early Reader · Change the reading level on the articleCollation
We put things in order. We can use numbers. We can use letters. This helps us find things fast. It is like a neat list. Do you like to keep things in order?
Early Reader · Change the reading level on the articleCollis Potter Huntington
Collis Huntington built big trains. He helped make long tracks. These tracks went across the land. They helped people travel far. He also helped build new towns. Many places have his name. Do you like train rides?
Early Reader · Change the reading level on the articleColon classification
Libraries use a way to sort books. This way uses marks like dots and colons. It helps you find a book fast. It tells us what a book is about. It even says where or when. Can you find a book today?
Early Reader · Change the reading level on the articleColonel Sanders
A man named Harland loved to cook. He made very good fried chicken. He used a secret recipe. He started a big food business. Many people eat his chicken today. Do you like fried chicken?
Early Reader · Change the reading level on the articleColor management
Colors can look different on screens. A screen might show bright red. A printer might show dark red. This can be tricky. We use special notes to help. These notes tell tools how to match. Now colors look the same…
Early Reader · Change the reading level on the articleColor motion picture film
Movies can have bright colors. Long ago, movies were just black and white. People even painted the pictures by hand! Now, we see red, green, and blue. It looks so pretty. Do you like colorful movies?
Early Reader · Change the reading level on the articleColor television
Color TV shows bright pictures. It is not just gray. It uses red, green, and blue. These colors mix to make a real picture. It helps us see the world. Do you like color TV?
Early Reader · Change the reading level on the articleColumbia Records
Columbia makes music records. They have been around a long time. They make discs for us to hear. This helps us listen to songs. It is fun to hear music! Do you like to listen to music?
Early Reader · Change the reading level on the articleCombat helmet
A helmet is hard head gear. It keeps the head safe. It stops bumps and hits. This helps people stay well. It is very useful. Do you like wearing hats?
Early Reader · Change the reading level on the articleCombined-cycle power plant
Some plants make power in two ways. They use heat to make it work. First, they use hot gas. Then, they use that hot gas to make steam. This helps make more power for us. It is a smart way to work. Do you like to…
Early Reader · Change the reading level on the articleComcast
Comcast is a big company. It helps people watch TV. It also brings the internet to homes. We use it to see shows. It is very large. Do you watch TV at home?
Early Reader · Change the reading level on the article