Junior ScienceB.H. Sanborn, 1921 - 533 σελίδες |
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Αποτελέσματα 1 - 5 από τα 39.
Σελίδα xv
... stems and buds for ? Why do plants have flowers ? - What are - How does a - What is the How are seeds - formed and scattered ? - What are the lower plants like ? - Are wild flowers worth preserving ? Exercises and summary . CHAPTER ...
... stems and buds for ? Why do plants have flowers ? - What are - How does a - What is the How are seeds - formed and scattered ? - What are the lower plants like ? - Are wild flowers worth preserving ? Exercises and summary . CHAPTER ...
Σελίδα 14
... stem loosely into a small - mouth bottle , such as a ketchup or vinegar bottle , and quickly fill the funnel with water . Does the water run in as a stream , or by spurts ? Now fit the funnel stem tightly into the mouth of the bottle ...
... stem loosely into a small - mouth bottle , such as a ketchup or vinegar bottle , and quickly fill the funnel with water . Does the water run in as a stream , or by spurts ? Now fit the funnel stem tightly into the mouth of the bottle ...
Σελίδα 14
... stem loosely into a small - mouth bottle , such as a ketchup or vinegar bottle , and quickly fill the funnel with water . Does the water run in as a stream , or by spurts ? Now fit the funnel stem tightly into the mouth of the bottle ...
... stem loosely into a small - mouth bottle , such as a ketchup or vinegar bottle , and quickly fill the funnel with water . Does the water run in as a stream , or by spurts ? Now fit the funnel stem tightly into the mouth of the bottle ...
Σελίδα 21
... stem , remove some of the air . Explain what happens . Does this show anything of air pressure ? If your laboratory has an air pump , perform the same experiment as shown in Fig . 12 . ( e ) Blow a paper bag full of air . The pressure ...
... stem , remove some of the air . Explain what happens . Does this show anything of air pressure ? If your laboratory has an air pump , perform the same experiment as shown in Fig . 12 . ( e ) Blow a paper bag full of air . The pressure ...
Σελίδα 50
... stem of the funnel must be entirely under water . Now fill a test tube with water , close its mouth with your thumb , set the test tube mouth downward into the battery jar , and slip it carefully over the stem of the funnel . Then set ...
... stem of the funnel must be entirely under water . Now fill a test tube with water , close its mouth with your thumb , set the test tube mouth downward into the battery jar , and slip it carefully over the stem of the funnel . Then set ...
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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.