Work Sheet-1

 Sub: Physical Science

Heat

WORK SHEET-1

Class X                                          Date: ______

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I) Fill in the blanks. 

1) Temperature is a measure of________

2) Average kinetic energy of the molecules is directly proportional to____________  ిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిిి

3) I Calories = _________________ Joule .

4) Match the following quantities with their units

 Quantity                                           Unit

 P) SI Unit of Heat ( )                   x) Kelvin

 Q) CGS Unit of Heat ( )               y) Calorie

 R) SI Unit of Temperature ( ).   z) Joule

                                                         w) Degree celsius

II. Answer the following in one sentence.

5) What is heat?

6) Define calorie?

7) Convert 27°c into Kelvin scale 27°C

8) Mention any one of difference between Heat and Temperature

 

III. Read the passage and answer the questions given under.

 A cylindrical transparent jar contains, half filled with hot water (60 °C) and other half with

coconut oil (room temperature) two thermometers are kept one in water and the other in

coconut oil.

 9) What change do you observed in the thermometer readings?

 

10) Which liquid loses heat energy?