| CHAPTER | | PAGE |
| | | |
| 1. | Gravitation | [1] |
| | 1. A real place where things weigh nothing and
where there is no up or down | [1] |
| | 2. "Water seeks its own level" | [6] |
| | 3. The sea of compressed air in which we live:
Air pressure | [10] |
| | 4. Sinking and floating: Displacement | [23] |
| | 5. How things are kept from toppling over:
Stability | [29] |
| | | |
| 2. | Molecular Attraction | [36] |
| | 6. How liquids are absorbed: Capillary attraction | [36] |
| | 7. How things stick to one another: Adhesion | [41] |
| | 8. The force that makes a thing hold together:
Cohesion | [44] |
| | 9. Friction | [49] |
| | | |
| 3. | Conservation of Energy | [57] |
| | 10. Levers | [57] |
| | 11. Inertia | [66] |
| | 12. Centrifugal force | [72] |
| | 13. Action and reaction | [77] |
| | 14. Elasticity | [82] |
| | | |
| 4. | Heat | [88] |
| | 15. Heat makes things expand | [88] |
| | 16. Cooling from expansion | [94] |
| | 17. Freezing and melting | [96] |
| | 18. Evaporation | [100] |
| | 19. Boiling and condensing | [107] |
| | 20. Conduction of heat and convection | [116] |
| | | |
| 5. | Radiant Heat and Light | [122] |
| | 21. How heat gets here from the sun; why things
glow when they become very hot | [122] |
| | 22. Reflection | [129] |
| | 23. The bending of light: Refraction | [136] |
| | 24. Focus | [142] |
| | 25. Magnification | [150] |
| | 26. Scattering of light: Diffusion of light | [158] |
| | 27. Color | [161] |
| | | |
| 6. | Sound | [174] |
| | 28. What sound is | [174] |
| | 29. Echoes | [183] |
| | 30. Pitch | [185] |
| | | |
| 7. | Magnetism and Electricity | [190] |
| | 31. Magnets; the compass | [190] |
| | 32. Static electricity | [196] |
| | | |
| 8. | Electricity | [203] |
| | 33. Making electricity flow | [203] |
| | 34. Conduction of electricity | [213] |
| | 35. Complete circuits | [219] |
| | 36. Grounded circuits | [225] |
| | 37. Resistance | [229] |
| | 38. The electric arc | [233] |
| | 39. Short circuits and fuses | [240] |
| | 40. Electromagnets | [247] |
| | | |
| 9. | Mingling of Molecules | [259] |
| | 41. Solutions and emulsions | [259] |
| | 42. Crystals | [265] |
| | 43. Diffusion | [268] |
| | 44. Clouds, rain, and dew: Humidity | [274] |
| | 45. Softening due to oil or water | [290] |
| | | |
| 10. | Chemical Change and Energy | [293] |
| | 46. What things are made of: Elements | [293] |
| | 47. Burning: Oxidation | [312] |
| | 48. Chemical change caused by heat | [323] |
| | 49. Chemical change caused by light | [326] |
| | 50. Chemical change caused by electricity | [335] |
| | 51. Chemical change releases energy | [340] |
| | 52. Explosions | [342] |
| | | |
| 11. | Solution and Chemical Action | [349] |
| | 53. Chemical change helped by solution | [349] |
| | 54. Acids | [351] |
| | 55. Bases | [355] |
| | 56. Neutralization | [360] |
| | 57. Effervescence | [365] |
| | | |
| 12. | Analysis | [370] |
| | 58. Analysis | [370] |
| | | |
| Appendixes: | | |
| | A. The Electrical Apparatus | [379] |
| | B. Construction of the Cigar-box Telegraph | [381] |
| | | |
| Index | | [383] |