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Sabtu, 06 Agustus 2011

PHYSICS HOME WORK (RAMADHAN TASK) FOR GRADE VII

1. Explain the definition are :
a. Quantity
b. Unit
c. Basic Quantity
d. Derivative Quantity
e. Measurement
2. Write down the basic quantities of its seven units and symbols in SI !
3. Write down the derivative quantities of its ten units and symbols in SI !
4. Why do we need to establish an international system unit ?
5. Explain the difference between the standard units and not standard units ?
6. What does it means by
a. one metre
b. one kilogram
c. one second
7. Convert units of below !
a. 2.25 km …….. m……… cm
b. 2.25 cm ……… m ………. Km
c. 4.5 kg ……. gr
d. 4.5 gr ……. kg
e. 0.24 hour ….. minutes …. Seconds
f. 0.24 seconds …… minutes ….. hour
g. 0.25 m2 ………. cm2
h. 45600 cm2 ……….. m2
i. 2.45  liter ……..  dm3
j. 0.624 m3 …….. cm3 …….. liter