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Created page with "==Key Stage 4== ===Meaning=== Investigate the effectiveness of different thermal insulators on reducing an energy transfer by heat..."
==Key Stage 4==
===Meaning===
Investigate the effectiveness of different [[Thermal Insulator|thermal insulators]] on reducing an [[Energy Transfer|energy transfer]] by [[heating]].
===Variables===
: [[Independent Variable]]: [[Thermal Insulator|Insulating material]].
: [[Dependent Variable]]: The [[temperature]] decrease of [[water]] after a given [[time]].
: [[Control Variable]]s: The [[Volume (Space)|volume]] of [[water]] used. The initial [[temperature]] of the [[water]]. The [[time]] taken between [[measurement]]s. Thickness of the [[Thermal Insulator|insulating material]].
===Method===
#Fill a can with hot [[water]] (above 80°C).
#Place a [[thermometer]] in the [[water]] and wait until the [[temperature]] reaches 80°C.
#Begin a [[stopwatch]] when the [[temperature]] is 80°C then [[Reading|read]] the [[temperature]] every 30 seconds for 5 minutes.
#Repeat steps 1-3 with a can covered each type of [[Thermal Insulator|insulating material]].
===Improving [[Accuracy]]===
: Place the cans on a [[Heatproof Mat|heatproof mat]] to reduce the [[Thermal Energy Store|thermal energy]] lost to the table surface by [[Thermal Conduction|conduction]].
: Place a lid over the cans to reduce the [[Thermal Energy Store|thermal energy]] lost to the [[air]] by [[evaporation]].
: Complete the experiments with different [[Thermal Insulator|insulators]] simultaneously so that a change in the [[temperature]] of the [[laboratory]] does not affect the [[results]].
===Improving [[Precision]]===
: Use a [[thermometer]] with a higher [[resolution]].
: Use a [[Data Logger|data logger]] rather than a [[thermometer]].
===Meaning===
Investigate the effectiveness of different [[Thermal Insulator|thermal insulators]] on reducing an [[Energy Transfer|energy transfer]] by [[heating]].
===Variables===
: [[Independent Variable]]: [[Thermal Insulator|Insulating material]].
: [[Dependent Variable]]: The [[temperature]] decrease of [[water]] after a given [[time]].
: [[Control Variable]]s: The [[Volume (Space)|volume]] of [[water]] used. The initial [[temperature]] of the [[water]]. The [[time]] taken between [[measurement]]s. Thickness of the [[Thermal Insulator|insulating material]].
===Method===
#Fill a can with hot [[water]] (above 80°C).
#Place a [[thermometer]] in the [[water]] and wait until the [[temperature]] reaches 80°C.
#Begin a [[stopwatch]] when the [[temperature]] is 80°C then [[Reading|read]] the [[temperature]] every 30 seconds for 5 minutes.
#Repeat steps 1-3 with a can covered each type of [[Thermal Insulator|insulating material]].
===Improving [[Accuracy]]===
: Place the cans on a [[Heatproof Mat|heatproof mat]] to reduce the [[Thermal Energy Store|thermal energy]] lost to the table surface by [[Thermal Conduction|conduction]].
: Place a lid over the cans to reduce the [[Thermal Energy Store|thermal energy]] lost to the [[air]] by [[evaporation]].
: Complete the experiments with different [[Thermal Insulator|insulators]] simultaneously so that a change in the [[temperature]] of the [[laboratory]] does not affect the [[results]].
===Improving [[Precision]]===
: Use a [[thermometer]] with a higher [[resolution]].
: Use a [[Data Logger|data logger]] rather than a [[thermometer]].