Required Practicals - Thermal Insulation Flashcards
What is the apparatus for measuring how types of material affect thermal insulation?
Five 100cm3 beakers
Five 250cm3 beakers
Five thermometers
Kettle
Cardboard
Scissors
Stopwatch
Insulating material
Rubber bands
What is the method for the measuring how types of material affected thermal insulation?
-Put the small beaker inside the larger beaker.
-Use the kettle to boil water, put 80cm3 into the small beaker.
-Use a piece of cardboard as a lid for the large beaker with a hole for the thermometer.
-Put the thermometer through the hole so its bulb is in the hot water.
-Record the temperature and start the stopwatch.
-Record water temperature every 3 minutes for 15 minutes
-Record results in a table.
Repeat using different materials using the same volume of water.
What is the apparatus for measuring how thickness of material affects the thermal insulation?
100cm3 beaker
thermometer
kettle
cardboard with a hole
scissors
stopwatch
insulating material
rubber bands
What is the method for investigating how the thickness of material affects the thermal insulation?
Wrap two layers of insulating material around the beaker, holding it in place with a rubber band.
Put 80 cm3 of hot water into the beaker.
Add a lid to the beaker.
Insert the thermometer through the hole in the lid so that its bulb is in the water.
Record the temperature of the water and start the stopwatch.
Record the temperature of the water and start the stopwatch.
Record the temperature every 3 minutes for 15 minutes.
Record results in a table from no insulation to 6 layers.
Repeat adding 2 more layers ech time.
What is the objective of the thermal insulation practical?
To investigate the effectiveness of thermal insulators.
What is the method for comparing the effectiveness of different materials as thermal insulators?
Place a small beaker inside a larger beaker.
Use a kettle to boil some water.
Transfer 80cm3 of hot water into the small beaker.
Use a piece of cardboard as a lid for the large beaker with a hole for a thermometer.
Place a thermometer through the hole in the cardboard lid with the bulb in the hot water.
Record the starting temperature of the water and start a stopwatch.
Record temperature of the water every 3 mins for 15 mins.
Repeat experiment using the same volume of hot water using an insulating material. Test a range of insulating materials with equal mass.
What is the independent variable of the thermal insulation practical (measuring type of insulation)?
The insulating material.
What is the dependent variable in the thermal insulation practical?
The temperature.
What control variables are there for the thermal insulation practical?
Volume of water.
Mass of insulating material.
Starting temperature.
What can we do with the results of different insulating materials?
Plot a cooling curve, the water will cool down the most with the mos effective insulating material.
What is the method for investigating how the thickness of a material affects insulation?
Start with a beaker with 80cm3 hot water.
Measure temperature every 3 mins for 15 mins.
Repeat the experiment but wrap two layers of insulating material around the beaker.
Repeat two more times, once with 4 layers and once with 6 layers.
What is the independent variable of the thermal insulation practical (thickness of material)?
The number of layers of insulation.
What are the typical results for investigating the results of adding more layers of insulation?
As more layers are added, the slower the water cools down as having more layers leads to a more effective thermal insulator than fewer layers.
