Nuclear power stations don't burn fossil fuels, so don't contribute to global warming.
Ben buys an oven.
The inside and outside surfaces of the oven are light coloured and shiny.
Explain why.
light, shiny surfaces are good insulators
light, shiny surfaces are good reflectors
light, shiny surfaces increase ultraviolet radiation
Why, on average, do wind turbines operate at maximum power output for only 30% of the time?
Because wind power is unreliable as the amount of wind at any given time is unpredictable, so they will not always be running at maximum efficiency.
Many of them are made poorly.
If they operated at 100%, they would break.
Solids are difficult to compress because their particles are packed together tightly.
This is due to...
strong forces of attraction
ionic bonds
large nucleuses
Gases will spread to fill their container because...
because of weak forces of attraction and particles being spread far apart
the particles have lots of energy
the particles don't have many electrons so are able to move freely
Hannah puts uncooked biscuits into an oven.
What type of electromagnetic radiation makes biscuits turn brown?
ultraviolet
infra red
ultrasound
What does a frequency of 440 Hz mean?
The sound wave compresses 440 times in a second
The sound wave compresses 440 times in an hour
The sound wave compresses 440 times in a minute
The sound wave moves at 440 miles per hour
It is incredibly likely that a nuclear power station could have a nuclear disaster.
Which of the following is NOT a disadvantage of replacing an old fridge with a new fridge?
Cost
More energy efficient
Disposing of the old fridge is time consuming
Fridge goes to a landfill
A copper block is placed into an emmersion heater. Energy is transferred through the copper block.
What is the name of the process by which this energy is transferred?
Conduction
Convection
Radiation
A student has a table of continuous data.
Suggest what type of graph the student should use.
Line graph
Bar chart
Box plot
Histogram
