Units for IGSCE: quantity unit symbol other units SI mass kilogram Kg g UNITS length metre m cm time second s h, min area square metre m2 cm2 volume cubic metre m3 cm3 force newton N - weight newton N - pressure pascal Pa N/m2 energy joule J kWh work joule J - power watt W - frequency hertz Hz - PD, EMF volt V - current ampere A - resistance ohm - Ω charge coulomb C - capacitance farad F - temperature Kelvin K - degree Celsius °C specific heat joules per kilogram ° J/(kg°C) J/(g°C) capacity Celsius specific latent joules per kilogram J/kg J/g heat latent heat joule J - speed metres per second m/s cm/s or km/h acceleration metres per second per m/s2 second 1. General physics 1.1 Length and time Length: rule (ruler) is used to measure length for distances between 1mm and 1meter; the •A SI unit for length is the meter (m) the volume of a regular object, you can use a mathematical formula, •To find out you just need to make a couple of length measurements. the volume of an irregular object you have to put the object into •To measure measuring cylinder with water. When you add the object it displaces the water, making the water level rise. Measure this rise. This is the volume of your object. •Micrometers: Rotate the thimble until the wire is firmly held between the anvil and the spindle. To take a reading, first look at the main scale. This has a linear scale reading on it. The long lines are every millimetre the shorter ones denote half a millimetre in between. Then look at the rotating scale. Add the 2 numbers, on the scale on the right it would be: 2.5mm + 0.46mm = 2.96mm Time:
Units for IGSCE: quantity unit symbol other units SI UNITS mass kilogram Kg g length metre m cm time second s h, min area square metre m2 cm2 volume cubic metre m3 cm3 force newton N - weight newton N - pressure pascal Pa N/m2 energy joule J kWh work joule J - power watt W - frequency hertz Hz - PD, EMF volt V - current ampere A - resistance ohm Ω - charge coulomb C - capacitance farad F - temperature Kelvin degree Celsius K °C - specific heat capacity joules per kilogram ° Celsius J/(kg°C) J/(g°C) specific latent heat joules per kilogram J/kg J/g latent heat joule J - speed metres per second m/s cm/s or km/h acceleration metres per second per second m/s2 1. General physics 1.1 Length and time Length: •A rule (ruler) is used to measure length for distances between 1mm and 1meter; the SI unit for length is the meter (m) •To find out the volume of a regular object, you can use a mathematical formula, you just need to make a couple of length measurements. •To measure the volume of an irregular object you have to put the object into measuring cylinder with water. When you add the object it displaces the water, making the water level rise. Measure this rise. This is the volume of your object. •Micrometers: Rotate the thimble until the wire is firmly held between the anvil and the spindle. To take a reading, first look at the main scale. This has a linear scale reading on it. The long lines are every millimetre the shorter ones denote half a millimetre in between. Then look at the rotating scale. Add the 2 numbers, on the scale on the right it would be: 2.5mm + 0.46mm = 2.96mm Time:
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