Everyone is a weather watcher. But no one knows for sure what the weather will be like tomorrow or next week--- not even meteorologists. Meteorologists are scientists who study the weather and try...
Learning about the sea
An oceanographer uses a device called a sonar to locate underwater sounds. Behind her is the underwater house she stays in. How long can you hold your breath under water? A few seconds? A minute?...
Volcano watchers
The ground shakes and quivers. Deep in the earth there is a roaring rumble. Suddenly, there is a giant explosion! A cloud of steam, mixed with dust and chunks of rocks, shoots out of the top of the...
Watching for earthquakes
Earthquakes happen all the time. We don't feel most of them. They are just small shakes in the earth. But some earthquakes make the ground tremble, rattle dishes, and even cause buildings to shake....
Cave scientists
Watch your head---there's a stalactite! Oops, don't trip over the stalagmite! Where are you? In a cave! Scientists who study caves are called speleologists. Most caves are dark, slippery tunnels of...
Learning about prehistoric life
Scaly dinosaurs and flying reptiles disappeared from the earth about sixty-five million years ago---long before there were people. Yet there are pictures of these animals in books. How do we know...
Learning about the earth
Who wants to study rocks? Geologists do. Geologists are scientists who "read" rocks as though they were history books. Rocks have a history of their own. They show geologists what the earth was like...
People Who Study the World and Space
People Who Study the World and Space People Who Study the World and Space
The sun’s boundary lines
Do you know why most globes are tilted on their stands? It's because the earth is tilted. Because of this tilt, different places on earth get different amounts of sunlight. Special lines on globes...
Lines around the world
Look at a globe or a map of the world. Have you ever wondered why there are so many crisscross lines? There are no lines on the earth, so why put lines on globes and maps? The lines are put there to...
