Junior ScienceB.H. Sanborn, 1921 - 533 σελίδες |
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Αποτελέσματα 1 - 5 από τα 73.
Σελίδα ix
... holds the solar system together ? 112 • Why does a body have weight ? In what direction does the earth pull ? Why does a body float ? Can a body move itself ? What is a force ? - Why do objects fly from the What is the density of water ...
... holds the solar system together ? 112 • Why does a body have weight ? In what direction does the earth pull ? Why does a body float ? Can a body move itself ? What is a force ? - Why do objects fly from the What is the density of water ...
Σελίδα 16
... holds about 375 pounds of air . Measure the living - room of your house and find the volume and weight of the air it holds . 12. How Do Heating and Cooling Affect Air ? - Sup- pose we set an " empty " flask upside down in a shallow dish ...
... holds about 375 pounds of air . Measure the living - room of your house and find the volume and weight of the air it holds . 12. How Do Heating and Cooling Affect Air ? - Sup- pose we set an " empty " flask upside down in a shallow dish ...
Σελίδα 20
... holds of a cubic foot . How much does this volume of air weigh ? Suppose that three times this volume of air is packed into the ball , what does the air in the ball weigh ? CHAPTER III PRESSURE OF THE ATMOSPHERE - 16. Does the 20 JUNIOR ...
... holds of a cubic foot . How much does this volume of air weigh ? Suppose that three times this volume of air is packed into the ball , what does the air in the ball weigh ? CHAPTER III PRESSURE OF THE ATMOSPHERE - 16. Does the 20 JUNIOR ...
Σελίδα 21
... hold the cover- ing in place with your hand , turn the vessel upside down , and remove your hand . Why does not the water fall out ? In what direction does the atmosphere exert pressure in this case ? ( c ) Hold a clean glass vial or ...
... hold the cover- ing in place with your hand , turn the vessel upside down , and remove your hand . Why does not the water fall out ? In what direction does the atmosphere exert pressure in this case ? ( c ) Hold a clean glass vial or ...
Σελίδα 23
... hold up a column of mercury only 34 ÷ 13.6 , or about 2.5 feet high . This would be about 30 inches . 18. The ... holds up the column of mercury . If the opening of a barometer tube has an area of 1 square inch , the mercury column 30 ...
... hold up a column of mercury only 34 ÷ 13.6 , or about 2.5 feet high . This would be about 30 inches . 18. The ... holds up the column of mercury . If the opening of a barometer tube has an area of 1 square inch , the mercury column 30 ...
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
acid ammonia animals bacteria becomes blood body boiling bones bottle breathing bulb burning called candle carbon dioxide carry cause cells cerebrum changed cloth coal cold color cool copper covered digestive dish dry cell earth electric current epidermis evaporate feet fire flame force give glass grow heat hydrochloric acid hydrogen inside iron kerosene kerosene lamp lamp layers learned light rays limewater liquid lungs machine magnet manganese dioxide material melted metal milk moon mouth move muscles needle nerve nitrogen nonconductor object oxide oxygen pass phosphorus piece pipes plants pole potassium chlorate pounds pressure produce pull pump push rock rubbed sal ammoniac salt seeds skin soil solution starch steam stomata stove substances sugar sulphur sunlight surface temperature tissue trees tube vibrations warm weather weight wind wire wood yeast zinc
Δημοφιλή αποσπάσματα
Σελίδα 509 - Measures of Weight 10 milligrams (mg) =1 centigram eg 10 centigrams =1 decigram dg 10 decigrams =1 gram g 10 grams =1 dekagram Dg 10 dekagrams =1 hektogram Hg 10 hektograms =1 kilogram Kg...
Σελίδα 402 - THIS is the forest primeval. The murmuring pines and the hemlocks, Bearded with moss, and in garments green, indistinct in the twilight, Stand like Druids of old, with voices sad and prophetic, Stand like harpers hoar, with beards that rest on their bosoms...
Σελίδα 509 - Measures of Length 10 millimeters (mm.) . . . . =1 centimeter cm. 10 centimeters =1 decimeter dm: 10 decimeters =1 meter m. 10 meters =1 dekameter Dm. 10 dekameters =1 hektometer Hm. 10 hektometers =1 kilometer Km.
Σελίδα 509 - Area. 100 square millimeters (sq. mm.) =1 sq. centimeter (sq. cm.). 100 square centimeters = 1 sq. decimeter (sq. dm.). 100 square decimeters =1 sq. meter (sq. m.). 3. Cubic Measure, or Volume. The unit of volume is the liter, which is 1 cu. dm., or 1,000 cc 1,000 cubic millimeters (cu. mm.) = 1 cubic centimeter (cc). 1,000 cubic centimeters =1 cubic decimeter (cu. dm.). 1 cubic decimeter = 1 liter (1.). 10 liters =1 dekaliter (dl.). 10 dekaliters =1 hectoliter (hl.). 10 hectoliters = 1 kiloliter...
Σελίδα 105 - The known principal planets, in order of their distance from the Sun are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
Σελίδα 339 - Levers are divided into three classes: in the first class, the fulcrum ' is between the power and the weight ; in the second class, the fulcrum is...
Σελίδα 86 - The wind arrows show the wind to be moving in a direction opposite to the movement of the hands of a watch (counterclockwise) when it is laid, face up, on the map.
Σελίδα 243 - ... north pole of one magnet will attract the south pole of another, and the south pole of one will attract the north of another ; but the north...
Σελίδα 53 - The oxygen is carried by the blood to all parts of the body...
Σελίδα 331 - In the second class of levers th'e fulcrum is at one end and the power at the other, with the weight between them.