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
what is parallax error
marking in the instrument is viewed from the wrong angle
what is precision?
the closeness of multiple readings to one another
may not be accurate
