Physical Science for ProgressPrentice-Hall, 1970 - 626 σελίδες |
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... Space Administration . 479 top - Official United States Navy Photograph . 481 left- United Nations . 482 - Yerkes Observatory . 491 bottom - National Aeronautics and Space Administration . 492 top - National Aeronautics and Space ...
... Space Administration . 479 top - Official United States Navy Photograph . 481 left- United Nations . 482 - Yerkes Observatory . 491 bottom - National Aeronautics and Space Administration . 492 top - National Aeronautics and Space ...
Σελίδα 594
... space , so these must be carried along . People can live only under limited con- ditions of air pressure . Since outer space is a vacuum , the air pressure inside the vehicle must be controlled . In order for this to be possible , the ...
... space , so these must be carried along . People can live only under limited con- ditions of air pressure . Since outer space is a vacuum , the air pressure inside the vehicle must be controlled . In order for this to be possible , the ...
Σελίδα 595
Milton O. Pella. FIGURE 16-30 Space station . from a space station above the atmosphere . Individual shipments of materials will be sent from the earth to the space station . Long - range space vehicles will then be assembled and fired ...
Milton O. Pella. FIGURE 16-30 Space station . from a space station above the atmosphere . Individual shipments of materials will be sent from the earth to the space station . Long - range space vehicles will then be assembled and fired ...
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UNIT | 1 |
UNIT | 49 |
distributors of the John Frankenheimer film Grand Prix A General Electric Company 337 bottom rightGeneral Electric | 92 |
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acid acting ACTIVITY added amount atoms beam become body called carbon causes cell charges chemical chemical change circuit color combining compounds connected contains copper determined direction distance earth effort electrical electrical charges electrons elements energy engine equal experiment explain facts feet FIGURE flow force fuel gain gives glass grams happens heat hour hydrogen inch increases ions iron kinds lamp laser layer length light liquid magnet mass materials matter means measure metal miles mirror molecules moon motion move nature needed object oxygen particles piece plane plate pole position pounds pressure produced push rays reflected resistance Result rock scientists shell side sodium solution sound space speed spring stars Study surface temperature Terms theory travels tube turns units waves weight wire