TASK OF PHYSIC
Name : Triska Ajeng Permata
Class : VII-C
No. Absent : 25
Kinds of thermometer
A) Advantage of Alcohol thermometer
Advantage of Mercury thermometer
B) Disadvantage of Alcohol thermometer
Disadvantage of Alcohol thermometer
C) Make two graps, from two datas
A)
Kinds of thermometer
1) Glass thermometer
Properties :
It is used to measure the temperature of
water, this water can hot, warm, fresh, and
cold.
It can measure the temperature precisely,
because it has large expansion coefficient.
The liquids are used as a thermometer filler
usually used by alcohol, because it can
measure a low temperature.
Its expansion is regular.
2) Six-Bellani Maximum and
Minimum thermometer
Properties :
 It is used to measure a maximum temperature,
mainly inside glass house used for plantation as
research object.
 The thermometer consist of alcohol (now it is
used creosote oil), mercury and small stell
pointer which is equiped by light spring as its
holder.
 It is used to measure a maximum thermometer at
afternoon and a minimum thermometer at night.
3) Wall thermometer
Properties :
 This thermometer is used to measure a room
temperature
 Usually, the thermometer is set on straight
position on the wall in a room
 This wall thermometer of the measurement
has two measurement scales, those are Celcius
and Fahrenheit scales.
4) Clinic thermometer manual
Properties :



This thermometer is usually used to measure
a human body temperature
The tube of the termometer is filled with
mercury
The scale of the thermometer is designed
from 35° Celcius until 42° Celcius and never
lower than 35° C and never higer than 42° C
5) Clinic thermometer digital
Properties :
 This thermometer is usually used to measure a
human body temperature.
 This thermometer not used by mercury, but
working automatic method
 Way used this thermometer just in place from
the under of tongue or arm.
 And result of measurement can see direct.
B)1) Advantage of Alcohol
thermometer
It can measure a low temperature,
because its freezing point is low (-115°
Celcius)
It can measure the temperature
precisely, because it has large
expansion coefficient, and
Its expain is regular
B)2)Advantage of Mercury
thermometer
It is visible, because its colour is silvery shining
Its expansion is regular
It does not make wet the wall of its place
It can measure a high temperature, because its
boiling point is high (365,9° Celcius)
It can measure the temperature quickly and
precisely.
C)1) Disadvantage of Alcohol thermometer
It cannot measure a high temperature,
because its boiling point is low (78°
Celcius)
It makes wet the wall of its place
It is colourless, so it must be given deystuff
in order too be visible.
C)2) Disadvantage of Mercury
thermometer
It cannot measure very low
temperature, because its freezing point
is high (-40° Celcius)
Mercury is poisonous, so it is harmfull if
its tube is broken, and
Its price is very high.
D)1)Make two graphs,from two
datas: Growth of Spinach
1st day
11th day
3rd day
13th day
5th day
15th day
7th day
96
95 95,5
94
CENTIME 92
TER
90
92,5 93
94
91,5
90
88
86
So, growth of Spinach each once day no definite.
D)2)Make two graphs,from two datas:
Weight of childrens in the Posyandu
Amount of weight
7
6
6
5
6
5
5
4
4
3
2
2
2
1
0
5 kg
6 kg
7 kg
8 kg
9 kg
10 kg
Total of weight childrens = 237 kg
Total of childrens in the Posyandu = 30 Childrens
11 kg