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SPEED

SPEED. http://en.wikipedia.org/wiki/Speed. What is the best unit to measure the speed of a snail?. a) km/h b) m/min c) m/s d) mm/s. A snail crawls 1 mm/s. What is the best unit to measure the speed of a racing car?. a) km/h b) m/h c) mm/min d) cm/s. At Bahrain,

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SPEED

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  1. SPEED http://en.wikipedia.org/wiki/Speed

  2. What is the best unit to measure the speed of a snail? a) km/hb) m/min c) m/s d) mm/s

  3. A snail crawls 1 mm/s

  4. What is the best unit to measure the speed of a racing car? a) km/hb) m/h c) mm/min d) cm/s

  5. At Bahrain, formula one racing cars travel at an average speed of 205 km/h

  6. a) km/minb) m/s c) m/min d) cm/s What is the best unit to measure the speed of a 100 m runner?

  7. In 2009 Usain Bolt ran a world record for 100 m in 9.58 s

  8. What is the best unit to measure the speed of the space shuttle? a) km/hb) mm/s c) m/h d) cm/s

  9. The space shuttle travels at a speed of 28 000 km/h.

  10. DENSITY

  11. What is heavier? The bamboo bowl or the rock? A large piece of bamboo is heavier than a small piece of rock

  12. What is heavier: rock or bamboo? DENSITY Throw in water

  13. What is heavier: rock or bamboo? DENSITY Bamboo floats Rock sinks

  14. Compare the same amount of bamboo and rock At 4°C pure water has a density (weight or mass) of about 1 g/cm3 What is the density of rock? 3 g/cm3 What is the density of bamboo? Rock sinks in water Bamboo floats 0.4 g/cm3

  15. http://www.iem-inc.com/tooldens.html DENSITIES Copy down 5 densities of materials you find interesting

  16. Air Apple Beeswax Bone Brick Butter Glass Concrete Diamond Petrol Pure gold Ice Iron Ivory Leather 0.001205 0.64 0.961 1.7 2.4 0.86 2.6 2.4 3 – 3.5 0.72 19.3 0.92 7.9 1.8 – 1.9 0.946 DENSITIES Which of these will float in water?

  17. CONCENTRATION

  18. 357 g/L How much salt can you add to a liter of cold water and dissolve easily? How much salt can you add to a liter of boiling water and dissolve easily? 390 g/L in boiling water

  19. 35 g/L What is the concentration of salt in the Dead Sea? What is the concentration of salt in oceans? 315 g/L

  20. How much sugar do I put in tea? 1 teaspoon per cup 5 g/50 ml

  21. ENERGY calories Joules 4.2 Joules = 1 calorie

  22. http://www.freedieting.com/tools/calorie_calculator.htm 2000 Cal/day

  23. ENERGY

  24. km/h DENSITY g/cm3 g/L CONCENTRATION SPEED ENERGY Cal/g

  25. distance/time DENSITY Usually solids mass/volume of a mass or liquid in a liquid mass/volume CONCENTRATION SPEED ENERGY calories/mass

  26. (a) g/cm3 (b) g/L The energy gained by eating chocolate is measured by (c) km/h (d) Cal/g

  27. (a) g/cm3 (b) mL/s The density of petrol is measured by (c) km/h (d) Cal/g

  28. The concentration of sugar in coffee is measured by (a) g/cm (c) km/h (b) g/mL (d) Cal/g

  29. The speed of a leopard can be measured in (a) g/cm3 (c) km/h (b) g/mL (d) Cal/g

  30. a leopard’s top speed is 114 km/h

  31. The density of a human being can be measured in (a) g/cm3 (c) km/h (b) g/mL (d) Cal/g

  32. The average density of a human being is 1.01 g/cm3 At 4°C pure water has a density (weight or mass) of about 1 g/cm3 SINK

  33. The concentration of an anti-biotic can be measured in (a) mL/g (c) km/h (b) g/mL (d) Cal/g

  34. The energy in pasta is measured in (a) g/cm3 (c) km/h (b) g/mL (d) Cal/g

  35. The energy in pasta is 1.06 cal/g A serving of 250 g contains 265 calories.

  36. roughly 1cal/g PASTA A serving of 250 g contains 265 calories. Source: http://www.quitehealthy.com/nutrition-facts/food-labels/label225731.gif

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