TASK OF PHYSIC Name : Triska Ajeng Permata Class : VII-C No. Absent : 25

1. TASK OF PHYSICName : Triska Ajeng PermataClass : VII-CNo. 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

2. Kinds of thermometer1) 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.

3. 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.

4. 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.

5. 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

6. 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.

7. 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

8. 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.

9. 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.

10. 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.

11. D)1)Make two graphs,from two datas: Growth of Spinach So, growth of Spinach each once day no definite.

12. D)2)Make two graphs,from two datas:Weight of childrens in the Posyandu Total of weight childrens = 237 kg Total of childrens in the Posyandu = 30 Childrens