WHAT ARE THE GALILEAN MOONS? FIND OUT MOREThe biggest planet, Jupiter, is 11 times wider than Earth. It is made mainly of hydrogen and helium. Its rapid spin makes the clouds in its atmosphere form…
(Encyclopedia) Hachijo-shimaHachijo-shimahäˌchējōˈ-shĭmä [key], island, c.40 sq mi (100 sq km), S Japan, in the Pacific Ocean. Ogago is the chief town of this mountainous island, which has two active…
(Encyclopedia) Karangetang or Api Siau, volcano, 5,896 ft (1,797 m) high, Siau Island, North Sulawesi province, Indonesia. One of the most active volcanoes in Indonesia, the stratovolcano has five…
FIND OUT MORELakes form where water fills hollows in the landscape. Some of these hollows are formed by glaciers gouging into the ground, and some are created when river valleys are blocked…
(Encyclopedia) CotopaxiCotopaxikōtōpăkˈsē [key], active volcano, 19,347 ft (5,897 m) high, N central Ecuador. A symmetrical snowcapped cone in the Andes, it is one of the highest volcanoes in the…
(Encyclopedia) Katla, volcano, 4,961 ft (1,512 m) high, SW Iceland. One of Iceland's most active volcanoes, it is partly buried under the Mýrdalsjökull glacier, which covers its eruptive vents. Katla…
Paleontologists now have evidence that dinosaurs lived on all of the continents. At the beginning of the age of dinosaurs (during the Triassic Period, about 230 million years ago) the continents…
+ PLANET EARTH HOW WAS EARTH FORMED? IS EARTH THE SAME ALL THE WAY THROUGH? HOW DOES EARTH SUPPORT LIFE? HOW DOES EARTH MOVE THROUGH SPACE? SEASONS FIND OUT MORE…
by Elizabeth Olson photos by Carol M. Highsmith The U.S. National Park Service was created on August 25, 1916, by President Woodrow Wilson. In 1872, Yellowstone National Park became the…
