GONTENTS 5
1.PHYSICS AND MATTER 5
2 MEASUREMENT 6
3.MOTION 8
4.FORCE 11
5.MASS 13
6.WORK 16
7.ENERGY 19
8.IMPULSE AND MOMENTUM 22
9.GRAVITATION(Ⅰ) 26
10.GRAVITATION(Ⅱ) 29
11.INERTIA 34
12.MACHINES(Ⅰ) 38
13.MACHINES(Ⅱ) 42
14.MECHANICS OF LIQUIDS(Ⅰ) 47
15.MECHANICS OF LIQUIDS(Ⅱ) 50
16.DENSITY OF A SOLID AND A LIQUID 54
17.BOYLE’S LAW 57
18.SOUND(Ⅰ) 62
19.SOUND(Ⅱ) 69
20.TEMPERATURE AND HEAT(Ⅰ) 74
21.TEMPERATURE AND HEAT(Ⅱ) 79
22.EVAPORATION AND THE TRANSFERENCE OF HEAT 84
23.LIGHT 89
24.LENSES AND COLORS 94
25. ELECTRICITY(Ⅰ) 99
26.ELECTRICITY(Ⅱ) 104
27.ELECTRICITY(Ⅲ) 110
28.MAGNETISM 117
29.ELECTRO-MAGNETIC INDUCTION 123
30.ELECTRIC MOTOR,ELECTRIC LIGHTING AND TELEGRAPH 127
VOCABULARY 133