Name : Dea Ayu Name : Dea Ayu OktavianiOktavianiClass : 7 AClass : 7 A

Advantage of alcohol thermometer :

~It can measure alow temperature , because its frezzing

point is low (-115°c) ~It can measure the temperature

precisely , because it has large expansion coefficient ~ Its expansion is regular

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 is high (356,9°c) ~It can measure the temperature quickly and

precisely

Disadvantage of alcohol thermometer : ~ It cannot measure a high temperature , because its boiling point is low (78°c) ~ It makes wet the wall of its place ~ It is colourless so it must be given dyestuff

in order to be visible

Disadvatage of mercury thermometer : ~It cannot mesure very low temperature , because its frezzing point is high (-40°c) ~Mercury is poisonous , so it is harmful if its

tube is broken ~Its price is very high

~CLINIC THERMOMETER

Properties : 1.This thermometer is usually used to measure a human body temperature 2.The tube of this thermometer is filled with

mercury 3.The scale of the thermometer is designed

from 35°c until 42°c

~WALL THERMOMETER Properties : 1.This thermometer is used to measure a room 2.Usually the thermometer is set on straight

position on the wall in the room 3.This therometer of the measurement has two

measure- ment scales , those are celcius and fahrenheit

scale

~SIX-BELLANI MAXIMUM MINIMUM THERMOMETER Properties : 1.This thermometer is used to measure a maximum temperature , mainly inside glass house used for plantation as rese- arch object 2.This thermometer was found by James Six (1731 –

1793)and english scientist in the last of 18th century then it developed by Angelo Bellani

3.This thermometer consits of alcohol(now it is usedcreosote oil) , mercury, and small steel pointer wich isequiped by light spring as its holder

• Data of plant growth (on table)

TIME (DAY) PLANT HEIGHT (CM)

0 2.8

2 3.5

4 4.6

6 5.4

8 6.4

• Data of plant growth (on line graph)

• Data of sell cookies at Irin snack (On table)

TIME (MONTH) COOKIES

JANUARY 430

FEBRUARY 270

MARCH 320

APRIL 440

MAY 590

• Data of sell cookies at Irin snack (on bar graph)