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Chapter 2, 3

Revise Measurement, Denstiy and Flotation

What are SI units? SI units are the International System of Units, a set of measurement that can be used anywhere in the world.
Why is it important to have a standard system of measurement? So items can be made to the same specifications anywhere in the world.
What are the SI units for Length, Mass, Time, Temperature, Area and Volume? Meter, Gram Second, Degrees Celsius, Meter Squared, Meter Cubed.
What piece of equipment would you use to measure mass? A Mass balance.
What piece of equipment would you use to measure time? A stopwatch.
What piece of equipment would you use to measure temperature? A thermometer.
How do you measure the area of a regular object? What formula would you use for a rectangle, a triangle and a circle? Width multiplied by height. Triangle: Half the base by the height. Circle: Pi x Radius squared.
How do you measure the area of an irregular object for example you hand? Place it on a square grid, count the covered squares and add up the area.
Define volume. Volume is the amount of space an object takes up.
What is density? Density is the mass per unit volume of a object.
What is the formula for density? Mass divided by volume.
What unit is density measure in? Grams/Centimeter Cubed (g/cm3)
Created by: SC Dave
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