Junior ScienceB.H. Sanborn, 1921 - 533 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 36.
Σελίδα xvii
... lungs ? - How does inhaled air get to the - What are the lungs like ? What is the voice ? -- Do the organs of respiration need care ? - What is the structure of the skin ? - How do hair and nails grow ? -- What is the work of the skin ...
... lungs ? - How does inhaled air get to the - What are the lungs like ? What is the voice ? -- Do the organs of respiration need care ? - What is the structure of the skin ? - How do hair and nails grow ? -- What is the work of the skin ...
Σελίδα 14
... Lungs Collecting the air of your breath " over water . " we can see that air takes up room , or occupies space , just as water does . If we want to pour water into a vessel , we must give the air a way of 14 JUNIOR SCIENCE.
... Lungs Collecting the air of your breath " over water . " we can see that air takes up room , or occupies space , just as water does . If we want to pour water into a vessel , we must give the air a way of 14 JUNIOR SCIENCE.
Σελίδα 22
... lungs were strong enough , could you , by suction , raise a liquid , such as water or lemonade , up to your mouth ? Your lungs are not strong enough , but you could use a suc- tion , or lift , pump for the purpose . This is just what we ...
... lungs were strong enough , could you , by suction , raise a liquid , such as water or lemonade , up to your mouth ? Your lungs are not strong enough , but you could use a suc- tion , or lift , pump for the purpose . This is just what we ...
Σελίδα 52
... lungs and then expelling the used air from the lungs . Is air changed by breathing ? To answer this question , carry out the following experiment : Provide a bottle with a cardboard cover and make a hole in the cover . Put a glass tube ...
... lungs and then expelling the used air from the lungs . Is air changed by breathing ? To answer this question , carry out the following experiment : Provide a bottle with a cardboard cover and make a hole in the cover . Put a glass tube ...
Σελίδα 53
... lungs into the blood vessels ; it is then carried by the blood to all parts of the body . The whole process by which oxygen gets to the cells of the body is called respiration . 66 A grown man takes into his lungs about 350 cubic feet ...
... lungs into the blood vessels ; it is then carried by the blood to all parts of the body . The whole process by which oxygen gets to the cells of the body is called respiration . 66 A grown man takes into his lungs about 350 cubic feet ...
Περιεχόμενα
3 | |
5 | |
13 | |
21 | |
42 | |
52 | |
61 | |
95 | |
243 | |
260 | |
277 | |
313 | |
325 | |
343 | |
365 | |
404 | |
112 | |
127 | |
152 | |
163 | |
198 | |
204 | |
214 | |
222 | |
449 | |
474 | |
492 | |
508 | |
517 | |
523 | |
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.