Physical Science for ProgressPrentice-Hall, 1970 - 626 σελίδες |
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Σελίδα 3
... facts upon which the belief is based . AIR Hot Wet FIRE WATER Dry Cold EARTH FIGURE 1-2 The fundamental properties and ele- ments according to Aristotle . Facts are the things that can be ob- served in nature . Day and night follow each ...
... facts upon which the belief is based . AIR Hot Wet FIRE WATER Dry Cold EARTH FIGURE 1-2 The fundamental properties and ele- ments according to Aristotle . Facts are the things that can be ob- served in nature . Day and night follow each ...
Σελίδα 4
... facts that can be observed . Theories are never true or false , they are rather use- ful or useless . You will learn many theories in science that are useful today . When new facts are discovered , you may have to modify the theories to ...
... facts that can be observed . Theories are never true or false , they are rather use- ful or useless . You will learn many theories in science that are useful today . When new facts are discovered , you may have to modify the theories to ...
Σελίδα 25
... Facts are discovered by experiment . The chemist can predict chemical changes by using the facts he has learned about matter . These facts have been discovered by ex- periment . He knows in advance what the reaction between the iron ...
... Facts are discovered by experiment . The chemist can predict chemical changes by using the facts he has learned about matter . These facts have been discovered by ex- periment . He knows in advance what the reaction between the iron ...
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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