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 8
الصفحة 6
... weight is 66 tons , but part had rusted away so that its original weight may have been 110 tons . The photo was taken in the 1920s ; second from left is Dr. L. J. Spencer , who became Keeper ( Head of Department ) of Minerals at The ...
... weight is 66 tons , but part had rusted away so that its original weight may have been 110 tons . The photo was taken in the 1920s ; second from left is Dr. L. J. Spencer , who became Keeper ( Head of Department ) of Minerals at The ...
الصفحة 16
... weight , however , is usually concentrated in the large lumps . The individuals of each shower land within an elliptical area on the Earth's surface , with the largest masses at the end furthest along the line of travel . ( See Fig . 3a ...
... weight , however , is usually concentrated in the large lumps . The individuals of each shower land within an elliptical area on the Earth's surface , with the largest masses at the end furthest along the line of travel . ( See Fig . 3a ...
الصفحة 42
... weights . These different atoms are known as " isotopes " of the element . Uranium has two important natural isotopes , with weights of 235 and 238 mass units . Uranium - 235 decays to lead - 207 and uranium - 238 to lead - 206 , but at ...
... weights . These different atoms are known as " isotopes " of the element . Uranium has two important natural isotopes , with weights of 235 and 238 mass units . Uranium - 235 decays to lead - 207 and uranium - 238 to lead - 206 , but at ...
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