By Kay Winnit
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Extra resources for All About Penguins
33 Meteor Crater was made about 50,000 years ago. Scientists think that the meteorite that made the crater was made of metal. It weighed about 330,000 tons (300,000 metric tons). The crash blasted out a large crater 4,180 feet (1,275 meters) across. This is the length of about 90 school buses end to end. This is a small piece of the meteorite that created Meteor Crater. It is made of mostly nickel and iron. 34 This huge meteorite fell into a pond in Canada in 2008. Earth is often hit by objects from space.
But now they are rare. 35 A Russian scientist examines a small piece of meteorite. What can we learn by studying meteorites? Chapter 5 Meteorite and Comet Hunting Meteorites and comets are some of the oldest objects in the solar system. They have changed little from when they were formed billions of years ago. Scientists study meteorites and comets to help learn how the universe began. 36 36 Scientists watch the sky for meteorites. They wait for one to crash. Then they try to collect the pieces.
Here are some suggestions: What is a meteor called when it falls all the way to Earth? What are comets made of? How are craters formed? Why is studying comets harder than studying meteors? If the child has questions, don’t hesitate to respond with questions of your own, such as What do you think? Why? What is it that you don’t know? If the child can’t remember certain facts, turn to the index. Introducing the Index The index helps readers find information without searching through the whole book.
All About Penguins by Kay Winnit