the scientific endeavour Flashcards
what is science
the study of natural phenomena in the world
what is quantitative data?
numerical quantities of object: phenomenon
numerical=involves measurement, mostly with tools
what is qualitative data?
-observations that describe objects/phenomena(characteristics)
-usually in words/ drawings
a chair has a greater height than a table
qualitative data
the height of a chair is 20m greater than the height of a table
quantitative data
what is a hypothesis?
proposed explanation for an observation
what is a independent variable?
changed variable
what is dependent variable
measured variable
what is SI unit for volume
m3
SI unit for mass
kg
SI unit for time
s
SI unit for length
m
SI unit for temperature
k
what is accuracy
the closeness to the true value of the quantity as possible
what is zero error
instrument gives a non-zero reading when measured quantity shld be zero