Junior ScienceB.H. Sanborn, 1921 - 533 σελίδες |
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Αποτελέσματα 1 - 5 από τα 37.
Σελίδα xiv
... eye see ? - Exercises and sum- mary . ―― CHAPTER XXVII Light in the House - How do we get sunlight into the house ? How have men lighted their houses at night ? How do kerosene lamps work ? How do we get light from gas ? - How does a ...
... eye see ? - Exercises and sum- mary . ―― CHAPTER XXVII Light in the House - How do we get sunlight into the house ? How have men lighted their houses at night ? How do kerosene lamps work ? How do we get light from gas ? - How does a ...
Σελίδα 5
... eyes , but with minds sharpened to question why and to work out a sensible answer . We call a change in an object , such as a fire , an eclipse , or the falling of a stone , a phenomenon ; the plural is phenomena . Think of all we could ...
... eyes , but with minds sharpened to question why and to work out a sensible answer . We call a change in an object , such as a fire , an eclipse , or the falling of a stone , a phenomenon ; the plural is phenomena . Think of all we could ...
Σελίδα 100
... eye of Taurus , the Bull . Behind these and a little farther south is Orion , with his belt of three bright stars and his sword of three fainter ones . After Orion comes the Great Dog ( Canis Major ) with the Dog Star , Sirius . This is ...
... eye of Taurus , the Bull . Behind these and a little farther south is Orion , with his belt of three bright stars and his sword of three fainter ones . After Orion comes the Great Dog ( Canis Major ) with the Dog Star , Sirius . This is ...
Σελίδα 101
... eye tonight left the star at least 47 years ago ? 89. Why are Some Heavenly Bodies Wanderers ? As we have learned , the stars in a constellation hold their places , but the constellations themselves seem to move around the sky from east ...
... eye tonight left the star at least 47 years ago ? 89. Why are Some Heavenly Bodies Wanderers ? As we have learned , the stars in a constellation hold their places , but the constellations themselves seem to move around the sky from east ...
Σελίδα 109
... eye view of a great comet . ( After Young . ) after night , move among the constellations until they rise and set with the sun , then move away from the sun , grow smaller , and finally disappear . Most comets are small , but some have ...
... eye view of a great comet . ( After Young . ) after night , move among the constellations until they rise and set with the sun , then move away from the sun , grow smaller , and finally disappear . Most comets are small , but some have ...
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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.