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Quiz von Lilac Potato, aktualisiert more than 1 year ago
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Erstellt von Lilac Potato
vor mehr als 8 Jahre
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Frage 1
Frage
Convection is the main form of heat transfer in...............?
Antworten
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Solids
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Liquids
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Gases
Frage 2
Frage
The [blank_start]bigger[blank_end] the temperature difference, the faster the heat transfer.
Antworten
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bigger
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smaller
Frage 3
Frage
Which of these surfaces are good at absorbing & emitting IR radiation?
Antworten
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Dark
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Matt
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Light
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Shiny
Frage 4
Frage
Conduction is faster in denser solids because the particles are closer together and will collide more often.
Antworten
- True
- False
Frage 5
Frage
Why are metals good conductors?
Antworten
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Because they have free electrons
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Because their particles are closer together
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Because their particles move faster
Frage 6
Frage
Why does water become less dense when it is heated?
Antworten
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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
Frage 7
Frage
The fastest particles are most likely to evaporate, [blank_start]decreasing[blank_end] the average speed of the remaining particles.
Antworten
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decreasing
Frage 8
Frage
The rate of condensation will be faster if.........
Antworten
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Temperature of gas is lower
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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
Frage 9
Frage
The larger the surface area, the [blank_start]faster[blank_end] the heat transfer.
Antworten
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faster
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slower
Frage 10
Frage
Why are the walls of a vacuum flask silvered?
Antworten
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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
Frage 11
Frage
How do you work out payback time?
Antworten
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Initial cost / Annual saving
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Annual saving / Initial cost
Frage 12
Frage
The better the insulator, the [blank_start]lower[blank_end] the U-value.
Antworten
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lower
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higher
Frage 13
Frage
What are the units for Specific Heat Capacity?
Antworten
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J/kg°C
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J/kg
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J/°C
Frage 14
Frage
Conservation of Energy Principle: Energy can be transferred, stored or dissipated but it can never be [blank_start]created[blank_end] or destroyed.
Antworten
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created
Frage 15
Frage
Energy is most often lost as......
Antworten
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Heat
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Sound
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Kinetic
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Light
Frage 16
Frage
What are the standard units for electrical energy?
Antworten
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kWh
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Joules
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Watts
Frage 17
Frage
What effect can access to electricity have on standard of living?
Antworten
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Public health
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Communications
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Malnutrition
Frage 18
Frage
Which of these represents the energy transfer when burning a fossil fuel to generate electricity?
Antworten
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Chemical ---> Heat ---> Kinetic ---> Electrical
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Heat ---> Kinetic ---> Chemical ---> Electrical
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Chemical ---> Kinetic ---> Heat ---> Electrical
Frage 19
Frage
Which of these renewable energy sources cause permanent damage to the landscape?
Antworten
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Wind power
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Solar power
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Hydroelectric power
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Tidal power
Frage 20
Frage
Which of these is the main advantage of HEP?
Antworten
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Can store energy
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Little environmental impact
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Low start up costs
Frage 21
Frage
Wave power can be harnessed by using the [blank_start]up and down[blank_end] motion of the waves to drive a generator.
Antworten
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up and down
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side to side
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up
Frage 22
Frage
Which of these is a major disadvantage of geothermal energy?
Antworten
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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
Frage 23
Frage
Which of these power stations takes the least amount of time to set up?
Antworten
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Natural gas
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Oil
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Coal
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Nuclear
Frage 24
Frage
How do biofuels harm the environment?
Antworten
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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
Frage 25
Frage
Where is captured carbon dioxide pumped to in CCS?
Antworten
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Empty gas & oil fields
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The ocean
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The atmosphere
Frage 26
Frage
What is the National Grid?
Antworten
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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
Frage 27
Frage
How can our demand for electricity be reduced?
Antworten
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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
Frage 28
Frage
Frequency is the number of waves produced in one [blank_start]second[blank_end].
Antworten
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second
Frage 29
Frage
Sound waves are an example of a transverse wave.
Antworten
- True
- False
Frage 30
Frage
Angle of incidence [blank_start]equals[blank_end] angle of reflection.
Antworten
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equals
Frage 31
Frage
Which of these describe the image in a plane mirror?
Antworten
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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
Frage 32
Frage
In diffraction, the narrower the gap, the [blank_start]more[blank_end] the wave spreads out.
Antworten
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more
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less
Frage 33
Frage
What happens when a wave travels along the normal?
Antworten
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It will change speed but not be refracted
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It will change speed and be refracted
Frage 34
Frage
What is the approximate range of wavelengths of electromagnetic waves?
Antworten
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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
Frage 35
Frage
How are long-wave radio waves (1-10 km) transmitted?
Antworten
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They diffract around the curved surface of the Earth
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They are reflected from the ionosphere
Frage 36
Frage
The higher the frequency of a wave, the [blank_start]shorter[blank_end] the wavelength.
Antworten
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shorter
Frage 37
Frage
Which of these are uses of Infrared waves?
Antworten
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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
Frage 38
Frage
The bigger the amplitude, the [blank_start]louder[blank_end] the sound.
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louder
Frage 39
Frage
When we look at light from distant galaxies we see the same patterns but at slightly [blank_start]lower[blank_end] frequencies
Antworten
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lower
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higher
Frage 40
Frage
The further away a galaxy is, the greater the red-shift.
Antworten
- True
- False
Frage 41
Frage
Which of these describes the Big Bang theory?
Antworten
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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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