Physics: Esercizi sulla misura e sulla notazione scientifica

Di seguito alcuni esercizi utili per le attività nelle classi in cui sono stati attivati dei percorsi CLIL di Fisica.

Exercise 1. A filament has a diameter of 0.20 microns. Express this diameter in terms of a centimeter. (1 micron = 1 micrometer).

Exercise 2. Estimate the number of seconds in a human “lifetime”. We’ll let you choose the definition of “lifetime.”

Exercise 3. A cardboard box has a base that measures w = 1.92 m, and d = 0.725 m. If its height is h = 1.88 m. (a) Calculate the area of the base of the box. (b) Calculate its volume using the result of (a). (c) Calculate its volume using the formula for volume. 

Q1. A kilogram is

  • 10-3 grams.
  • 103 grams.
  • 106 grams.
  • 10 grams.

Q2. A centimeter is

  • 100 meters.
  • 10 meters.
  • 0.1 meters.
  • 0.01 meters.

Q3. A megawatt is

  • 106 watts.
  • 103 watts.
  • 10-3 watts.
  • 10-6 watts.

Q4. A nanosecond is

  • 10-3 seconds.
  • 10-6 seconds.
  • 10-9 seconds.
  • 10-12 seconds.

Q5. All of the following are base units of the SI system except:

  • kilogram.
  • kelvin.
  • meter.
  • pound.

Q6. The SI prefix for 10-12 is

  • tera-
  • giga-
  • nano-
  • pico-

Q7. Given (1 angstrom unit = 10-10 m) and (1 fermi = 10-15 m), what is the relationship between these units?

  • 1 angstrom = 105 fermi
  • 1 angstrom = 10-5 fermi
  • 1 angstrom = 10-25 fermi
  • 1 angstrom = 10+25 fermi

Q8. Convert 0.75 kilometers to meters.

  • 7500 m
  • 750 m
  • 75 m
  • 7.5 m

Q9. Convert 0.0215 m to mm.

  • 0.215 mm
  • 2.15 mm
  • 21.5 mm
  • 215 mm

Q10. The number 9452 in scientific notation is

  • 9.452 x 102
  • 94.52 x 102
  • 0.9452 x 104
  • 9.452 x 103

Q11. The number .0000475 in scientific notation is

  • 4.75 x 10-6
  • 4.75 x 10-5
  • 4.75 x 10-4
  • 4.75 x 10-3

Q12. What does 1.23 + 2.50 x 10-3 equal?

  • 1.23
  • 1.2324
  • 1.232
  • 1.233

Q13. The diagonal of a square 2.0 meters on a side is

  • 2.0 m.
  • 2.8 m.
  • 2.82 m.
  • 8 m.

Q14. A 10 L container has a volume expressed in m3 of

  • 0.1 m3
  • 0.01 m3
  • 0.001 m3
  • 0.0001 m3
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Febbraio 6, 2018

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