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19/04/2010 ( Day 3)

19/04/2010 ( Day 3). WELCOME. http://plkclscmc-timothy.viviti.com/. Experiment 6.13 (P.142). Experiment 6.13 (P.142). If I measure the volume of a floating object, what can I do?. Experiment 6.13 (P.142). Block: Iron, Aluminium , Cork 1/each Measuring Cylinder 1

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19/04/2010 ( Day 3)

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  1. 19/04/2010 (Day 3) WELCOME http://plkclscmc-timothy.viviti.com/

  2. Experiment 6.13 (P.142)

  3. Experiment 6.13 (P.142) If I measure the volume of a floating object, what can I do?

  4. Experiment 6.13 (P.142) • Block: Iron, Aluminium, Cork 1/each • Measuring Cylinder 1 • Electronic Balance 1 • Thread 3

  5. Experiment 6.13 (P.142)Precautions • - To lie down the measuring cylinder in the box. • - To tie the blocks tightly.

  6. Experiment 6.13 (P.142) TIME: 20MINS

  7. Experiment 6.13 (P.142)

  8. Experiment 6.13 (P.142) 3. Arrange the objects in ascending order of density. __________________________ Cork, Aluminium, Iron

  9. Sinking and floating (P.144) An object floats or sinks depends on its density.

  10. Activity Corner C (P.144) 1(a) Polystyrene, oil and ice are above the water layer.

  11. Activity Corner C (P.144) 1(b) These substances are floating on water because they are _____________ than water. less dense

  12. Activity Corner C (P.144) 2(a) Ice, water, iron nail and mercury are below the water layer.

  13. Activity Corner C (P.144) 2(b) These substances sink below oil because they are _____________ than oil. denser

  14. Activity Corner C (P.144) 3. Polystyrene, oil, ice, water, iron nail, mercury.

  15. Activity Corner C (P.144) If an object is denser than a liquid it ___________ the liquid. If an object is less dense than a liquid, it ___________ the liquid. sinks on floats on

  16. Particle models and density (P.146) Mass of particles

  17. Particle models and density (P.146) Packing of particles

  18. SPECIAL QUESTION(P.145) Why do metal ships float?

  19. Experiment 6.14 (P.142) Making a hot air balloon

  20. Experiment 6.14 (P.142) 2. Light the Bunsen burner. What happens to the plastic bag? _________________ The plastic bag rises

  21. Experiment 6.14 (P.142) Making a hot air balloon

  22. Experiment 6.14 (P.142) 2.(a) The movement of air particles inside the bag becomes _________. faster 2.(b) The air particles inside the bag move _____________. further apart

  23. Experiment 6.14 (P.142) 2.(c) The density of air inside the bag _________. decreases 2.(d) • The density of air inside the bag is _________ than that of the air outside. lower

  24. Experiment 6.14 (P.142) 3. Hot air balloons can rise because the density of air inside is smaller than that outside.

  25. HOMEWORK Experiment 6.13

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