Practicals

Question 1

How to measure specific heat capacity

Answer 1

• measure the inittial temp of the block use thermometer
• turn on heater and heat to 10 degrees
• measure final temp of block with thermometer
• Subtract initial temp from final temp
• record energy suplied to the block

Question 2

Stages of absorbtion and emission of infared radiation

Answer 2

• take two identical cans, one with a light, shiny surface and one with a matt, black surface
• fill cans with same amount of water
• leave cans for same amount of time for 20 mins Then measure temp
• the can with lower temp is best emitter of infrared radiation
• repeat but with colder water and for 30 mins and the can with the highest temp is best absorber of infrared radiation