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Chapter 7 science form 1...experiment

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EXPERIMENT FOR SCIENCE FORM 1 SCIENCE

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Chapter 7 science form 1...experiment

  1. 1. • THIS EXPERIMENT IS TO SHOW THAT THE SUN GIVES OUT HEAT. • THE PAPER CATCHES FIRE. • THE CONCLUSION IS SUN GIVES OUT HEAT
  2. 2. • THIS EXPERIMENT IS TO SHOW THAT HEAT CAN BE PRODUCED WHEN THERE IS FRICTION BETWEEN TO OBJECTS. • BOTH THE STICK AND THE ROCK PRODUCES HEAT AS THERE WERE FRICTION BETWEEN THEM. RUBBING TWO STICKS STRIKING TWO STONES
  3. 3. • THIS EXPERIMENT IS TO SHOW THAT HEAT CAUSES SOLID TO EXPAND AND CONTRACTS. • THE METAL RING EXPANDS WHEN HEATED AND CONTRACTS WHEN COOLED. • THE METAL RING CAN’T PASS THROUGH THE RING WHEN HEATED AND CAN PASS THROUGH IT AGAIN WHEN IT IS COOLED. • THE CONCLUSION IS SOLIDS EXPANDS AND CONTRACTS WHEN HEATED AND COOLED
  4. 4. • AFTER FEW MINUTES,THE LIQUID/INDICATOR GOES DOWN BACK AS IT LOOSES HEAT. • THE CONCLUSION OF THIS EXPERIMENT IS AIR EXPANDS WHEN IS CONTACT WITH HEAT AND CONTRACTS WHEN LOOSES HEAT.
  5. 5. • THIS EXPERIMENT IS TO SHOW THAT HEAT FLOWS BY CONDUCTION. • THUMBTACK ______ WILL FALL FIRST BECAUSE HEAT FLOWS FROM THE HOT END OF THE IRON ROD TO THE COLD END.
  6. 6. THE PICTURE ABOVE SHOWS HOW HEAT FLOWS BY CONVECTION IN A LIQUID
  7. 7. THE IMAGE ABOVE SHOWS HOW A VACUMM LOOKS LIKE…. HEAT TRAVELS THOUGH VACUM AS RADIATION OR HEAT RAYS RADIATION = VACUUM
  8. 8. 0 2 4 6 8 10 12 14 PAPER COTTON ALUMINIUM FOIL SHEEP WOOL RATE OF HEAT INSULATORS . , .2
  9. 9. • DARK, DULL OBJECTS ABSORB HEAT BETTER THAN WHITE, SHINY OBJECTS. • DARK, DULL OBJECTS GIVE OUT HEAT BETTER THAN WHITE, SHINY OBJECTS.
  10. 10. 1)WHAT IS THE CHANGES IN STATE OF MATTER OCCURS DURING THE MELTING PROCESS? 2)WHY IS MERCURY USED IN A THERMOMETER? 3)AN OBJECT THAT IS A GOOD ABSORBER OF HEAT HAS A SURFACE CONDITION THAT IS ? 4)WHAT IS THE SI UNIT OF HEAT? 5)WHAT IS THE SI UNIT OF TEMPERATURE? QUESTIONS BY US
  11. 11. LOGIC QUESTION BY STUDENTS & TEACHER

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