Junior ScienceB.H. Sanborn, 1921 - 533 σελίδες |
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Σελίδα xii
... sugar preserve food ? are the principles of canning ? What are the methods of Does canning pay ? Canning as a factory Do preservatives harm food ? - canning ? industry . Exercises . 222 CONTENTS PART V HOW WE USE NATURE'S FORCES The ...
... sugar preserve food ? are the principles of canning ? What are the methods of Does canning pay ? Canning as a factory Do preservatives harm food ? - canning ? industry . Exercises . 222 CONTENTS PART V HOW WE USE NATURE'S FORCES The ...
Σελίδα xv
... sugar cane and bamboo grow ? - Why is wheat flour used for yeast bread ? What are the legumes ? How do legumes capture nitrogen ? Why do we eat vegetables ? What fabrics do we get from plants ? Exercises and summary . Our Plant Friends ...
... sugar cane and bamboo grow ? - Why is wheat flour used for yeast bread ? What are the legumes ? How do legumes capture nitrogen ? Why do we eat vegetables ? What fabrics do we get from plants ? Exercises and summary . Our Plant Friends ...
Σελίδα 7
... sugar into a dish and heat it , to learn how hot it is when it chars ; or we see how much we can stretch a brass wire before it breaks ; or we pass light through a piece of thick glass , to find out how the light will be changed . The ...
... sugar into a dish and heat it , to learn how hot it is when it chars ; or we see how much we can stretch a brass wire before it breaks ; or we pass light through a piece of thick glass , to find out how the light will be changed . The ...
Σελίδα 16
... sugar are substances . One cubic foot of air ordinarily weighs about 1 ounces ; how can we find out how much the air of your schoolroom weighs ? Suppose that the room is 24 feet long , 20 feet wide , and 10 feet high . The volume , in ...
... sugar are substances . One cubic foot of air ordinarily weighs about 1 ounces ; how can we find out how much the air of your schoolroom weighs ? Suppose that the room is 24 feet long , 20 feet wide , and 10 feet high . The volume , in ...
Σελίδα 72
... sugar or iron . The amount of heat that is needed to heat a pound of water through one degree , Fahrenheit , as from 32 ° F. to 33 ° F. , is called a British Thermal Unit ( B. T. U. ) . The amount of heat required to heat 1 gram of ...
... sugar or iron . The amount of heat that is needed to heat a pound of water through one degree , Fahrenheit , as from 32 ° F. to 33 ° F. , is called a British Thermal Unit ( B. T. U. ) . The amount of heat required to heat 1 gram of ...
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acid ammonia animals bacteria becomes birds blood body boiling bones bottle breathing bulb burning called candle carbon dioxide carry cause cells cerebrum changed cloth coal cold color cool copper covered dermis digestive earth eggs electric electric current epidermis feet fibers fire flame flowers force fruit give glass grow heat hydrochloric acid hydrogen insects inside iron larvæ layer learned leaves legumes light limewater liquid lungs machine magnet manganese dioxide material meat metal milk moon mouth muscles needle nerve nitrogen object organs oxide oxygen pass phosphorus piece pistil piston plants pole potassium chlorate pounds pressure produce pump push rays rock rubbed sal ammoniac salt seeds skin soil stamens starch steam stem stomata stove substances sugar sulphur sunlight surface temperature tissue trees tube 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.