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WorksheetsGCSE PHYSICS - Thermal Energy End of Topic Quiz
Total questions: 25
Worksheet time: 13mins
If the particles in a conductor are more tightly packed it will have a smaller conductivity
TRUE
FALSE
The best insulator would have...
Loosely bound particles that are spread out.
Tightly bound particles that are close together.
Tightly bound particles and lots of free electrons.
No particles at all, it would be a vacuum.
Calculate the payback time for double glazed windows that cost £1800 to install and save £150 on heating bills
14.4 months
22.5 years
0.083 years
12 years
Effective house insulation...
...has a low U-Value
...has a high U-Value
How does most insulation in the home work?
The insulating material has a vacuum that doesn't allow conduction or convection to occur
The insulating material has trapped air pockets that slows conduction and convection from occurring
All the insulating material is put at the top of the house because heat rises
All the insulating material is put in the walls because they have a large surface area
What is the independent variable
Anything that can change
The thing you change
The thing you measure at the end
The thing you keep the same
What is the dependent variable
Anything that can change
The thing you change
The thing you measure at the end
The thing you keep the same
In the insulation practical what is the independent variable?
Time taken
Thickness of insulation
Temperature change
The thermometer
What does this define: To find the _______, add all the numbers together then divide by the number of numbers.
median
mode
range
mean
In a practical to test the effectiveness of different insulators what would the dependent variable be?
The temperature difference
The initial temperature of the water
The thickness of the insulator used
The type of insulator used
As an object becomes higher in temperature the peak of the intensity of the wavelengths radiated by the object...
stays the same
moves towards the visible range of wavelengths
moves towards the Gamma Ray range of wavelengths
A perfect Black Body would reflect some radiation that fell onto it
True
False
When the Earth absorbs more infrared than it emits it will...
Heat up
Cool down
Stay at a constant temperature
Explode
What are the 3 main Greenhouse Gases?
Carbon dioxide
Helium
Methane
Water vapour
Global warming...
occurs when more infrared radiation is emitted into space than is absorbed by the Earth
occurs because the amount of greenhouse gases have increased
is fake news
What is Specific Heat Capacity?
The amount of thermal energy required to increase the temperature of 1kg of a material by 1°C.
The amount of radiant energy required to increase the temperature of 1kgof a material by 1°C
The amount of energy required to increase the temperature of 1kgof a material by 1°C.
The amount of friction required to increase the temperature of 1kgof a material by 1°C.
If the specific heat capacity of water is 4,200 J/kg∙°C, how much energy is required to increase the temperature of 1.2 kg of water from 25 °C to 40 °C?
Energy=mass x SHC x temp change
100,000 J
126,000 J
75,600 J
201,600 J
Water has a specific heat of 4200 J/KgºC. Wood has a specific heat of 1800J/KgºC. Which material needs more energy to raise the temperature 1ºC?
Wood
Water
Both are the same
