5505600
Descrição
Quiz por Lilac Potato, atualizado more than 1 year ago
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Criado por Lilac Potato
mais de 8 anos atrás
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Questão 1
Questão
Convection is the main form of heat transfer in...............?
Responda
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Solids
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Liquids
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Gases
Questão 2
Questão
The [blank_start]bigger[blank_end] the temperature difference, the faster the heat transfer.
Responda
-
bigger
-
smaller
Questão 3
Questão
Which of these surfaces are good at absorbing & emitting IR radiation?
Responda
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Dark
-
Matt
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Light
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Shiny
Questão 4
Questão
Conduction is faster in denser solids because the particles are closer together and will collide more often.
Responda
- True
- False
Questão 5
Questão
Why are metals good conductors?
Responda
-
Because they have free electrons
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Because their particles are closer together
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Because their particles move faster
Questão 6
Questão
Why does water become less dense when it is heated?
Responda
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Because the particles gain heat energy and spread apart
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The heat makes the particles lighter
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Because the particles lose heat energy and spread apart
Questão 7
Questão
The fastest particles are most likely to evaporate, [blank_start]decreasing[blank_end] the average speed of the remaining particles.
Responda
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decreasing
Questão 8
Questão
The rate of condensation will be faster if.........
Responda
-
Temperature of gas is lower
-
Temperature of gas is higher
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Density is higher
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Density is lower
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Airflow is less
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Airflow is greater
Questão 9
Questão
The larger the surface area, the [blank_start]faster[blank_end] the heat transfer.
Responda
-
faster
-
slower
Questão 10
Questão
Why are the walls of a vacuum flask silvered?
Responda
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To reduce heat loss by radiation
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To reduce heat loss by conduction
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To reduce heat loss by convection
Questão 11
Questão
How do you work out payback time?
Responda
-
Initial cost / Annual saving
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Annual saving / Initial cost
Questão 12
Questão
The better the insulator, the [blank_start]lower[blank_end] the U-value.
Responda
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lower
-
higher
Questão 13
Questão
What are the units for Specific Heat Capacity?
Responda
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J/kg°C
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J/kg
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J/°C
Questão 14
Questão
Conservation of Energy Principle: Energy can be transferred, stored or dissipated but it can never be [blank_start]created[blank_end] or destroyed.
Responda
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created
Questão 15
Questão
Energy is most often lost as......
Responda
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Heat
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Sound
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Kinetic
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Light
Questão 16
Questão
What are the standard units for electrical energy?
Responda
-
kWh
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Joules
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Watts
Questão 17
Questão
What effect can access to electricity have on standard of living?
Responda
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Public health
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Communications
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Malnutrition
Questão 18
Questão
Which of these represents the energy transfer when burning a fossil fuel to generate electricity?
Responda
-
Chemical ---> Heat ---> Kinetic ---> Electrical
-
Heat ---> Kinetic ---> Chemical ---> Electrical
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Chemical ---> Kinetic ---> Heat ---> Electrical
Questão 19
Questão
Which of these renewable energy sources cause permanent damage to the landscape?
Responda
-
Wind power
-
Solar power
-
Hydroelectric power
-
Tidal power
Questão 20
Questão
Which of these is the main advantage of HEP?
Responda
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Can store energy
-
Little environmental impact
-
Low start up costs
Questão 21
Questão
Wave power can be harnessed by using the [blank_start]up and down[blank_end] motion of the waves to drive a generator.
Responda
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up and down
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side to side
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up
Questão 22
Questão
Which of these is a major disadvantage of geothermal energy?
Responda
-
It can only be done in a few locations
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It is difficult to use the energy
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It produces a lot of polluting gases
Questão 23
Questão
Which of these power stations takes the least amount of time to set up?
Responda
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Natural gas
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Oil
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Coal
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Nuclear
Questão 24
Questão
How do biofuels harm the environment?
Responda
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They are 'carbon neutral'
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They require clearance of large areas of forest
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They release a lot of methane when the plants grow
Questão 25
Questão
Where is captured carbon dioxide pumped to in CCS?
Responda
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Empty gas & oil fields
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The ocean
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The atmosphere
Questão 26
Questão
What is the National Grid?
Responda
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A system of cables and pylons
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A system of cables and transformers
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A system of cables, transformers and power stations
Questão 27
Questão
How can our demand for electricity be reduced?
Responda
-
Consumers using more energy-efficient appliances
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Being more careful not to waste energy in the home
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Opening more power plants
Questão 28
Questão
Frequency is the number of waves produced in one [blank_start]second[blank_end].
Responda
-
second
Questão 29
Questão
Sound waves are an example of a transverse wave.
Responda
- True
- False
Questão 30
Questão
Angle of incidence [blank_start]equals[blank_end] angle of reflection.
Responda
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equals
Questão 31
Questão
Which of these describe the image in a plane mirror?
Responda
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Same size as object
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Bigger than object
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Virtual
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Real
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Upright
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Upside down
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Laterally inverted
Questão 32
Questão
In diffraction, the narrower the gap, the [blank_start]more[blank_end] the wave spreads out.
Responda
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more
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less
Questão 33
Questão
What happens when a wave travels along the normal?
Responda
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It will change speed but not be refracted
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It will change speed and be refracted
Questão 34
Questão
What is the approximate range of wavelengths of electromagnetic waves?
Responda
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10^−15 metres to 10^4 metres
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10^−4 metres to 10^15 metres
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10^−6 metres to 10^6 metres
Questão 35
Questão
How are long-wave radio waves (1-10 km) transmitted?
Responda
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They diffract around the curved surface of the Earth
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They are reflected from the ionosphere
Questão 36
Questão
The higher the frequency of a wave, the [blank_start]shorter[blank_end] the wavelength.
Responda
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shorter
Questão 37
Questão
Which of these are uses of Infrared waves?
Responda
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Satellite communication
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Mobile phones
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Remote controls
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Optical fibres
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Photography
Questão 38
Questão
The bigger the amplitude, the [blank_start]louder[blank_end] the sound.
Responda
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louder
Questão 39
Questão
When we look at light from distant galaxies we see the same patterns but at slightly [blank_start]lower[blank_end] frequencies
Responda
-
lower
-
higher
Questão 40
Questão
The further away a galaxy is, the greater the red-shift.
Responda
- True
- False
Questão 41
Questão
Which of these describes the Big Bang theory?
Responda
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All matter & energy compressed into small space which exploded & is still expanding.
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Universe has always existed as it is now - expansion can be explained by matter being created.
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