1814074
Descripción
Test por Adorkable_dreamer, actualizado hace más de 1 año
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Creado por Adorkable_dreamer
hace casi 10 años
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Pregunta 1
Pregunta
Which state does conduction occur in?
Respuesta
-
Solids
-
Liquids
-
Gases
Pregunta 2
Pregunta
Do black, matt objects absorb better than light, shiny objects?
Respuesta
- True
- False
Pregunta 3
Pregunta
Condensation is faster if...?
Respuesta
-
Temperature of the gas is higher.
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Gas has a higher density.
Pregunta 4
Pregunta
Non-metals conduct better than metals?
Respuesta
- True
- False
Pregunta 5
Pregunta
In evaporation what happens to the overall energy and speed of the particles?
Respuesta
-
Overall energy and speed of particles decreases as particles evaporate
-
Overall energy and speed of particles stays the same as particles evaporate
-
Overall energy and speed of particles increases as particles evaporate
Pregunta 6
Pregunta
Evaporation is the change of state from a liquid to gas?
Respuesta
- True
- False
Pregunta 7
Pregunta
In a vacuum flask, which two features are used to prevent conduction?
Respuesta
-
Cao made of plastic and filled with cork.
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Silver lining.
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Insulation foam supporting the bottle.
Pregunta 8
Pregunta
In a cold climate, do animals have large ears or small ears to prevent heat loss?
Respuesta
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Large ears
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Small ears
Pregunta 9
Pregunta
If the intial cost of loft insulation is £100 and the annual saving is £20, how many years will the payback time take?
Respuesta
-
4 years
-
200 years
-
5 years
Pregunta 10
Pregunta
U-Values show how slow heat transfers through a material
Respuesta
- True
- False
Pregunta 11
Pregunta
Which two methods of insulation reduce heat transfer by conduction and convection
Respuesta
-
Thick curtains
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Cavity wall insulation
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Hot water tank jacket
Pregunta 12
Pregunta
The principal of conservation of energy means that energy cannot be created or destroyed.
Respuesta
- True
- False
Pregunta 13
Pregunta
What is the efficiency of an energy-saving lightbulb that converts 60J of energy into 40J of light energy
Respuesta
-
1.5
-
3
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20
Pregunta 14
Pregunta
Carbon dioxide can be 'captured' before it is released from burning fossil fuels and pumped into oil and gas fields beneath the sea.
Respuesta
- True
- False
Pregunta 15
Pregunta
What do transformers do when transferring electricity from the National Grid to consumers?
Respuesta
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Maintain the voltage of electricity.
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Increase the voltage so that current is decreased whilst transferring electricity through pylons and then decrease to lower voltages for consumers.
Pregunta 16
Pregunta
What two ways provide energy during peak demands of electricity?
Respuesta
-
Carbon capture fields.
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pumped storage systems such as that of a hyrdroelectric power
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Biofuel from vegetable oils.
Pregunta 17
Pregunta
Underground cables have a higher set-up cost than overhead cables but are less reliable and harder to access.
Respuesta
- True
- False
Pregunta 18
Pregunta
What is the order of the Electromagnetic spectrum?
Respuesta
-
Radio, Microwaves Infra-red, Visible light, Ultraviolet, X-rays, Gamma rays.
-
Microwaves, Visible light, Ultraviolet, X-rays, Radio, Gamma rays.
Pregunta 19
Pregunta
All waves travel at the same speed through a vacuum
Respuesta
- True
- False
Pregunta 20
Pregunta
Transverse waves are?
Respuesta
-
Perpendicular to the direction of energy transfer
-
parallel to the direction of energy transfer
Pregunta 21
Pregunta
Longitudinal waves show areas of compression and rarefraction?
Respuesta
- True
- False
Pregunta 22
Pregunta
What is the formula for wave speed?
Respuesta
-
Wave speed = frequency x wavelength
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Wave speed = frequency divided by wavelength
Pregunta 23
Pregunta
The angle of incidence is equal to the angle of reflection?
Respuesta
- True
- False
Pregunta 24
Pregunta
When waves diffract,, how big will the diffraction be if the gap is slightly wider than the wavelength?
Respuesta
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Diffracts only at edges.
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Little diffraction
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Maximum diffraction
Pregunta 25
Pregunta
Waves only defract if they meet a new medium at an angle
Respuesta
- True
- False
Pregunta 26
Pregunta
If a wave is travelling along the normal, the speed changes and the wave is defracted.
Respuesta
- True
- False
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