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HORSE POWER ILLUSTRATED.-33,000 lbs. one foot per minute.

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3. What are the most important properties of matter? 4. What is a solid?

5. What is the difference between a liquid and a gas? 6. What is an atom?

8. Briefly state the Atomic Theory.

9. What is Cohesion?

Adhesion?

10. What is Capillary Attraction?

7. What is a molecule?

11. What are certain important properties of bodies?

12. What is weight?

13. Will a body weigh more on a mountain or in a valley?

14. Does a body weigh more at the Equator, or at the Poles?

15. What does a body weigh at the centre of the earth?

16. State the Law of Gravity? 17. What is the Centre of Gravity? 18. If an object weighs 5,000 pounds at the surface of the earth, what would it weigh if it could be carried 1,000 miles above the surface of the earth?

19. Why does a load of hay upset more easily than a load of sand? 20. Why is one rail of a track, on a curve, of a railroad, higher than the other?

21. The famous tower of Pisa, Italy, is 188 feet high and leans 15 feet from the vertical. What keeps it from falling?

22. What is stable, unstable and indifferent equilibrium? [hinges? 23. Can a heavy ball be fired through a door without moving it on its 24. Can a bullet be fired through a pane of glass without shattering it? 25. Why is a bullet flattened when fired obliquely across a sheet of

water?

26. Are any two trees parallel?

27. What is the curvature of the earth per mile?

28. With the eye at sea level, how far is an object discernible?

29. How fast per hour does the earth move in its orbit?

30. Why do not raindrops strike with a force proportional to the laws of falling bodies?

[Poles?

31. Will a clock gain or lose time in going from the Equator to the 32. What is Specific Gravity?

33. What did Archimedes discover while taking a bath?

34. How high are waves at times along the coast? At sea?
35. Can a man by means of cork shoes walk on water?
36. Why do dead fish float on their backs and sides?
37. What is the science of Hydrostatics?

38. What is Pascal's Law!

39. What is an Artesian Well? Why so called? How many gallons per minute do the best yield?

40. What is the Hydrostatic Press?

41. How is the spirit level constructed?

42. Explain the use of locks in canals, and how boats ascend and descend

through them?

43. Enumerate the six elementary Mechanical Powers.

44. Into how many classes are Levers divided?

45. What is the fulcrum?

46. A pair of scissors is a lever of what class?

47. What kind of a lever is a door?

48. What is actual, kinetic, or dynamic energy?

49. What is static or potential energy?

50. Has the obelisk in Central Park, New York, dynamic or static energy?

51. What is the science of Hydraulics?

What is the:

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KEY TO

SOCIAL HOURS

SCIENTIFIC QUERIES;

NATURAL PHILOSOPHY.

HOME GUITURE

1. Natural Philosophy, or Physics, is the systematic study of matter and the forces which act upon it, without destroying its identity.

2. Everything that occupies space.

3. Magnitude, Impenetrability, Divisibility, Porosity, Inertia, Attraction and Indestructibility.

4. An accumulation of matter, the particles of which are held together by a cohesive force, sufficient to overcome the attraction of gravity.

5. In a liquid there is a molecular attraction; in a gas there is molecular repulsion. A gas is readily compressible, while a liquid is not.

6. An ultimate portion of matter that is no longer separable into parts. 7. A molecule is a combination of two or more atoms.

8. All matter is formed of molecules, and molecules of two or more atoms, according to chemical laws.

9. Cohesion is that force which binds together atoms of the same kind to form one uniform mass. Adhesion is that form of attraction which

exists between unlike molecules when in contact with each other. 10. It is that form of attraction which exists between a liquid and the interior of a solid, which is tubular or porous. [tleness.

11. Malleability, Ductility, Flexibility, Tenacity, Hardness, and Brit12. Weight is the measure of force with which a body is attracted by the earth. [attraction.

13. A body weighs more in a valley because it is nearer the centre of 14. It weighs less at the Equator because it is farther from the centre of attraction.

15. It has no weight.

16. Every portion of matter attracts every other portion with a force proportional directly to its mass or quantity and inversely as the square of the distance.

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