Chapter 1
calibrated should closely with a standard or when correction has applie
a
agree agree
Measuring volumes
volume the space occupied
by an objet
meniscus curved upper
surface of a liquid
displace
moving smty to another place is moved out
of the o upwards then on
by
immerse to cover smtg in a fluid usuallywater so that objetis submerged
to find a ofan object thatis hard tomeasure putit on a cylinderand fill itwith waterthe
volume
put the object on thewater thenthe in its volume isequal to the
increase
volume
of theobject
We use unit
litreandmillilitre are not officially SIunit ofvolume
11 is the same as 1dm
11 so so so 1cm
Density
Density the ratio of mass to volume for a
substance
It tells us how concentrated
its mass is
Density is the mass per unit for a
substance
the equation
M
P V
, The Sl unit is kg m kg per cubic
meter
An object that
is
less than water will float that means its
less dense than water
Density of water is 1000kg m
or
1g am or ekg dm
the density
Finding of a liquid
Place
a measuring cylinder on a
balance set the balanieto zero
Now
pour liquid
into the cylinder
Read the volume from the cylinder and the mass from the balance
Measuring time
analogue display has hands or needle not precise
digital display shows number precise
Chapter 2
Distance time speed
the by an object perunit line
speed distance travelled
average speed the speed calculated from total distance travelled divided
by total time take
average
speed total t.itnentraedled
SI unit for speed m s
11
calibrated should closely with a standard or when correction has applie
a
agree agree
Measuring volumes
volume the space occupied
by an objet
meniscus curved upper
surface of a liquid
displace
moving smty to another place is moved out
of the o upwards then on
by
immerse to cover smtg in a fluid usuallywater so that objetis submerged
to find a ofan object thatis hard tomeasure putit on a cylinderand fill itwith waterthe
volume
put the object on thewater thenthe in its volume isequal to the
increase
volume
of theobject
We use unit
litreandmillilitre are not officially SIunit ofvolume
11 is the same as 1dm
11 so so so 1cm
Density
Density the ratio of mass to volume for a
substance
It tells us how concentrated
its mass is
Density is the mass per unit for a
substance
the equation
M
P V
, The Sl unit is kg m kg per cubic
meter
An object that
is
less than water will float that means its
less dense than water
Density of water is 1000kg m
or
1g am or ekg dm
the density
Finding of a liquid
Place
a measuring cylinder on a
balance set the balanieto zero
Now
pour liquid
into the cylinder
Read the volume from the cylinder and the mass from the balance
Measuring time
analogue display has hands or needle not precise
digital display shows number precise
Chapter 2
Distance time speed
the by an object perunit line
speed distance travelled
average speed the speed calculated from total distance travelled divided
by total time take
average
speed total t.itnentraedled
SI unit for speed m s
11
