2441650
Descrição
Quiz por Izzy Backhouse, atualizado more than 1 year ago
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Criado por Izzy Backhouse
mais de 9 anos atrás
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|
Questão 1
Questão
What colours on a thermogram represent hot temperatures?
Responda
-
White
-
Blue
-
Yellow
-
Red
-
Black
-
Purple
Questão 2
Questão
Define: Temperature
Responda
-
= a measurement of energy on an absolute scale.
-
= a measurement of the average kinetic energy of particles.
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= total energy of all particles.
Questão 3
Questão
Thermal energy always flows from a hotter area to a cooler one.
Responda
- True
- False
Questão 4
Questão
What is the equation for specific heat capacity?
Responda
-
energy / (mass x temperature change)
-
energy / mass
Questão 5
Questão
When a substance melts or solidifies there is no temperature change.
Responda
- True
- False
Questão 6
Questão
The kinetic energy of particles increases at colder temperatures.
Responda
- True
- False
Questão 7
Questão
What does arrow A on this graph showing changes of states represent?
Responda
-
Melting
-
Boiling
-
Freezing
-
Condensing
Questão 8
Questão
What does arrow B on the graph showing the changes of state of water represent?
Responda
-
Melting
-
Boiling
-
Freezing
-
Condensing
Questão 9
Questão
What are the 3 types of thermal transfer?
Responda
-
Conduction
-
Radiation
-
Nuclear
-
Convection
-
Sun
Questão 10
Questão
Conduction can work in solids because the particles pass their energy to neighbouring particles.
Responda
- True
- False
Questão 11
Questão
Warmer regions of a fluid are more dense than cooler regions of fluid.
Responda
- True
- False
Questão 12
Questão
What 2 surfaces are the best for absorbing and emitting radiation?
Responda
-
Black
-
Shiny
-
White
-
Matt
-
Silver
Questão 13
Questão
Which of the options below are methods of insulation?
Responda
-
Curtains and draught excluders
-
Cavity walls
-
Double glazing
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Carpets and underfloor insulation
-
Reflective foil behind radiators
Questão 14
Responda
-
Energy flow
-
Wasted energy
-
Efficiency
-
Useful energy
Questão 15
Questão
The higher the efficiency the less energy is wasted.
Responda
- True
- False
Questão 16
Questão
If you put ice cubes in a glass, why do they melt?
Responda
-
The ice cubes cool the surroundings.
-
The surroundings transfer heat to the ice cubes.
-
The ice cubes need to be kept in the freezer.
Questão 17
Questão
What is the definition of a wave?
Responda
-
The transfer of energy without the transfer of matter.
-
The movement of energy through water.
-
The movement of particles in any surface/object.
Questão 18
Questão
The definition of a longitudinal wave is...
Responda
-
...when the displacement is perpendicular to the direction of the wave.
-
...when the displacement is parallel to the direction of the wave.
Questão 19
Questão
Define: Frequency
Responda
-
= the number of complete waves to pass a point in 1 second.
-
= the time taken for one wave to pass a point.
Questão 20
Questão
Light travels in straight lines.
Responda
- True
- False
Questão 21
Questão
In the reflection of light, the angle of incidence is greater than the angle of reflection.
Responda
- True
- False
Questão 22
Questão
How does the speed of light change when it enters a denser material?
Responda
-
It speeds up
-
It slows down
-
It doesn't change
-
It stops
Questão 23
Questão
In refraction, the emergent ray bends towards the normal.
Responda
- True
- False
Questão 24
Questão
Define: Diffraction
Responda
-
= the bending of light.
-
= the bending of waves through a hole or around an obstacle.
-
= the trajectory of a wave.
Questão 25
Questão
Which of the 3 statements below are true about ionising waves?
Responda
-
They have a severe effect on living tissue by killing cells or damaging DNA.
-
They are harmless to humans.
-
They have a short wavelength and high frequency.
-
They carry lots of energy.
-
They have a long wavelength and low frequency.
Questão 26
Questão
What is the order of the waves in the electromagnetic spectrum? (starting with highest frequency and shortest wavelength)
Responda
-
X-Ray, Ultraviolet, Visible, Infrared, Microwaves, Gamma, Radio waves
-
Gamma, X-Ray, Ultraviolet, Visible, Infrared, Microwaves, Radio waves
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Gamma, Ultraviolet, Visible, X-Ray, Infrared, Microwaves, Radio waves
-
Radio waves, Gamma, X-Ray, Visible, Infrared, Ultraviolet, Microwaves,
Questão 27
Questão
Which of the following are uses of gamma waves?
Responda
-
Tanning Machines
-
Treating cancer
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TV remote
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Sterilising medical instruments
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Seeing bones
Questão 28
Questão
Select the 3 properties off Infrared waves.
Responda
-
They can burn human tissue by transferring their energy to our skin.
-
They are reflected by metal surfaces.
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They can't penetrate materials such as plastic and glass.
-
They are harmless to humans.
-
They can pass through glass and plastic.
Questão 29
Questão
Infrared waves are absorbed by food during cooking.
Responda
- True
- False
Questão 30
Questão
How does a microwave oven cook food?
Responda
-
The fan reflects waves from the turbine. They fill the oven and cook the food.
-
The fan reflects waves from the generator. They bounce off the walls and cook the food.
-
The fan reflects waves from the magnetron. They reflect off the walls and cook the food.
Questão 31
Questão
What is the critical angle of glass?
Responda
-
40 degrees
-
41 degrees
-
42 degrees
Questão 32
Questão
What is one benefit for patients when using an endoscope?
Responda
-
Patients will have a quicker recovery time as the surgery is less intrusive so no risk of infection.
-
The operation hurts less.
-
The doctor doesn't have to use a knife.
Questão 33
Questão
What are the 2 methods that can be used for multiplexing?
Responda
-
Different colours
-
Different sizes
-
Different times
-
Different divisions
Questão 34
Questão
An analogue signal varies continuously in amplitude and frequency.
Responda
- True
- False
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