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PHYSICS TASK

PHYSICS TASK. Name : Dea Ayu Oktaviani Class : 7 A. A . Different about alcohol Thermometer and mercury thermometer. Advantage of alcohol thermometer : ~It can measure alow temperature , because its frezzing point is low (-115°c)

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PHYSICS TASK

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  1. PHYSICS TASK Name : Dea Ayu Oktaviani Class : 7 A

  2. A . Different about alcohol Thermometer and mercury thermometer 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

  3. 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

  4. 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

  5. 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

  6. B . Kinds of thermometer ~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

  7. ~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

  8. ~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

  9. C.Graph Data of plant growth (on table)

  10. Data of plant growth (on line graph)

  11. Data of sell cookies at Irin snack (On table)

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

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