MeteoritesSterling Pub., 1993 - 60 من الصفحات "A wonderful resource....Students will be drawn to read and investigate....The text is direct, interesting, and free of mind-numbing chemistry and physics formulas that so often deter YAs from further investigation....An exceptionally well-done summary."-- "SLJ . "Well-written and nicely illustrated....The technical quality of the book is very good...."-- "Science Bks & Films, a starred review . 60 pages (all in color), 8 1/4 x 7 7/8. |
من داخل الكتاب
النتائج 1-3 من 17
الصفحة 8
... miles per second ( the Earth's escape velocity ) . This is about forty times faster than the speed of sound . When the meteoroid is at a height of 60 to 75 miles , frictional heating in the upper atmosphere can produce a bright fireball ...
... miles per second ( the Earth's escape velocity ) . This is about forty times faster than the speed of sound . When the meteoroid is at a height of 60 to 75 miles , frictional heating in the upper atmosphere can produce a bright fireball ...
الصفحة 46
... miles per second . It was concluded that the parent asteroid may have been 1862 Apollo , Hermes or 1865 Cerberus , with two other less likely possibilities . This account is a good illustration of the dependence of scientists on the non ...
... miles per second . It was concluded that the parent asteroid may have been 1862 Apollo , Hermes or 1865 Cerberus , with two other less likely possibilities . This account is a good illustration of the dependence of scientists on the non ...
الصفحة 55
... miles up in the atmosphere . There is evidence that a fragment of comet was responsible . A crater one mile across is formed every 1,500 years or so , but larger cratering events are less frequent . For 65 66 65 Polished surface of the ...
... miles up in the atmosphere . There is evidence that a fragment of comet was responsible . A crater one mile across is formed every 1,500 years or so , but larger cratering events are less frequent . For 65 66 65 Polished surface of the ...
المحتوى
Introduction | 1 |
How do meteorites get here? | 8 |
Where do meteorites come from? | 14 |
حقوق النشر | |
3 من الأقسام الأخرى غير ظاهرة
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
anorthosite Antarctica Apollo astroblemes atmospheric flight basaltic basaltic achondrites basaltic rock blue ice bombardment bright fireball calcium carbonaceous chondrite caused chemical elements chondrites contain chondrules cometary composed cooled core Cosmic spherules crater crystals dark decay feldspar fell formation age fragments fusion crust gravity group IIAB Halley's Comet highlands howardites igneous rocks inches indicates interplanetary dust interstellar cloud iridium iron meteorites iron-nickel metal land on Earth liquid lunar magnesium mare Mars melting mesosiderites Meteor meteorite falls meteorite impact meteorite landed meteorite shower meteoroid micrometeorites million years ago mineral grains molten Moon nebula objects observed occurred olivine orbit palladium Pallasites parent asteroid particles percent nickel planetary planets formed plutonium produced pyroxene radioactive aluminum samples silicate SNC meteorites Solar System solar wind solidified sonic booms space speed stars stone stony material stony meteorite stony minerals Stony-iron meteorite sulfide Sun and planets supernova surface temperature Widmanstätten pattern