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# Year 12 Ratio and Ra

TermDefinition
rate a comparison of different quantities in definite order
unitary method a technique used to solve a problem that involves finding one unit of an amount by division
heart rate the number of beats per minute
energy rate energy is the rate of power per unit of time (kilowatt hour kWh). Running cost of of the appliance is calculated by multiplying the energy consumption by the electricity charge.
fuel consumption the number of litres of fuel a motor vehicle uses to travel 100 kilometres
ratio a number used to compare amounts of the same units in a definite order such 3:4
scale drawing a drawing that represents the actual object
scale factor the ratio of the size of the drawing size of the object
plan a view of an object from the top
elevation a view of an object from the side such as a front elevation or side elevation
perimeter the distance around the outside of an object
area the amount of surface enclosed by the boundaries of the shape
speed distance travelled divided by time taken
power the rate at which energy is generated or consumed
energy rating label a label which allows consumers to compare the energy efficiency of similar products
equivalent ratios ratios obtained by multiplying or dividing by the same number
Created by: wdobson