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At first, not many scientists agreed with the Alvarezes’ theory. Then, in 1990, geologists looking for oil off Mexico’s coast discovered a huge impact crater. It was buried under a mile of limestone. Underground imaging equipment showed that the crater fit the Alvarezes’ theory. It is exactly the right size and formed at exactly the right time to support their idea. | Meteors and Moon Rocks | Kids Discover

Earth would have craters just like the Moon’s if it didn’t have an atmosphere. That layer of gases allows Earth to have climate and weather. Rain and wind erode old craters. Plants and water cover them up, and natural disasters cause changes. Canyon Diablo in Arizona (above) is a rare case of a giant impact crater that has survived pretty much intact. A 15,000-ton meteorite crashed there about 50,000 years ago. | Meteors and Moon Rocks | Kids Discover

The Aleutian Islands are part of the state of Alaska. They form an archipelago that takes the same curved shape as the plates on which the islands have formed. This is called an island arc. | Oceanic Islands and How They Form | Kids Discover

Could another large object hit Earth? In 1908, a rocky object exploded in Western Siberia with the force of several nuclear bombs. No one was killed in that sparsely settled place. But the explosion leveled trees in an area the size of New York City. | Meteors and Moon Rocks | Kids Discover

from Science 6 at FMS

Identifying Rocks

Rock Cycle [More important than you think! When picking rocks for hardscapes you want to use Metamorphic rock in most cases, especially with water (so it doesn't leach anything into the water) but it is also important to know what type of rockscape your c

Grand Canyon, Arizona, from our Unit on Earth | Kids Discover

Fragments found in the Moon’s “orange soil” by Apollo 17 | Meteors and Moon Rocks | Kids Discover

A new Hawaiian island is forming over the hot spot. It has been named Loihi. It is about 21 miles southeast of Hawaii. The top of Loihi is now about 3,300 feet below the surface of the ocean and is expected to break through in about 50,000 years. | Oceanic Islands and How They Form | Kids Discover

from I Can Teach My Child!

Make Your Own Ocean Zones in a Jar

Ocean zones (the layers of an ocean) in a jar

Microphotograph of rock collected from Apollo 12 | Meteors and Moon Rocks | Kids Discover