Physics chapter 1 to 10.3
Summary
chapter I -4 Making measurement
conversion of units
* 1000 ☒ 100 * 10
km→→_± m cm mm
F "
÷ 1000 :#
SI Units
Quantity Quantity Symbol SI Unit SI Unit
Symbol
L metre
Length m
Mass m
kilogram kg
Time to second S
T Kelvin K
Temperature
Current I
Ampere A
Types of instruments
-
Metre rule
Tape measure
-
Vernier caliper [ Accuracy of 0.01 ]
-
cm
-
Micrometer screen
gauge [ Accuracy
of 0.001cm ]
Types of errors
1) Zero errors when instrument does not start from
measuring exactly Zero
-
2) Parallax error -
eyes are not
perpendicular to scale
,Prefix
'
tera
'
10
109 giga
10£
mega
}
10 kilo
'
10 hector
'
10 deca
'
10
-
deci
-2
to centi
10-3 mili
-
b
10 micro
"
10
-
nana
10-12 pico
,Density
Density .IE?oY#me,iunitkg1m3
E. tho I ,
means density of water
If density of object more than water it will sink
,
If density of
object less than water, it will float
How to and volume of
measure
density an
object ? ( that sinks ?
"
F
2) 3)
O
1T€
ocm
}
Tie a
string to
the object
Use weighing balance
Prepare water in to measure mass of
measuring cylinder object
and measure its initial volume
§
"" 5) Use the final volume initial volume to volume
get
-
" "
of object .
" "" "" " " " "" " volume of ,
obg.ec ,
"
" → am
6) To find
density ,
use the formula D=
Put it into the
measuring
cylinder and
d
measure the D= ¥8 =
891cm
}
,
thus density of
object
=
89km3
final volume
, How to measure
density and volume of an
object ? ( that floats )
1)
☐→ueoo¢
1T¥
Measure the mass of
object with
weighing
balance
"
rooms
Prepare a
measuring
cylinder filled with water
and measure initial volume
3) pistone .
¥¥¥¥ > mood
Tie the object that floats luiood )
with an
object that sinks ( in this case, stone )
"
¥:¥
""" "
"
÷÷÷÷ .
↳
Put it into the
measuring cyclin der
and measure the final volume
5) Volume for wood 6) If want
density ,
100 -20
= 130
:#
-
☐
10cm 3
%
=
D=
}
☐ : 8g 1cm
Summary
chapter I -4 Making measurement
conversion of units
* 1000 ☒ 100 * 10
km→→_± m cm mm
F "
÷ 1000 :#
SI Units
Quantity Quantity Symbol SI Unit SI Unit
Symbol
L metre
Length m
Mass m
kilogram kg
Time to second S
T Kelvin K
Temperature
Current I
Ampere A
Types of instruments
-
Metre rule
Tape measure
-
Vernier caliper [ Accuracy of 0.01 ]
-
cm
-
Micrometer screen
gauge [ Accuracy
of 0.001cm ]
Types of errors
1) Zero errors when instrument does not start from
measuring exactly Zero
-
2) Parallax error -
eyes are not
perpendicular to scale
,Prefix
'
tera
'
10
109 giga
10£
mega
}
10 kilo
'
10 hector
'
10 deca
'
10
-
deci
-2
to centi
10-3 mili
-
b
10 micro
"
10
-
nana
10-12 pico
,Density
Density .IE?oY#me,iunitkg1m3
E. tho I ,
means density of water
If density of object more than water it will sink
,
If density of
object less than water, it will float
How to and volume of
measure
density an
object ? ( that sinks ?
"
F
2) 3)
O
1T€
ocm
}
Tie a
string to
the object
Use weighing balance
Prepare water in to measure mass of
measuring cylinder object
and measure its initial volume
§
"" 5) Use the final volume initial volume to volume
get
-
" "
of object .
" "" "" " " " "" " volume of ,
obg.ec ,
"
" → am
6) To find
density ,
use the formula D=
Put it into the
measuring
cylinder and
d
measure the D= ¥8 =
891cm
}
,
thus density of
object
=
89km3
final volume
, How to measure
density and volume of an
object ? ( that floats )
1)
☐→ueoo¢
1T¥
Measure the mass of
object with
weighing
balance
"
rooms
Prepare a
measuring
cylinder filled with water
and measure initial volume
3) pistone .
¥¥¥¥ > mood
Tie the object that floats luiood )
with an
object that sinks ( in this case, stone )
"
¥:¥
""" "
"
÷÷÷÷ .
↳
Put it into the
measuring cyclin der
and measure the final volume
5) Volume for wood 6) If want
density ,
100 -20
= 130
:#
-
☐
10cm 3
%
=
D=
}
☐ : 8g 1cm
