Forms of energy
Name a form of energy
Heat Chemical Electrical Elastic potential Gravitational potential Kinetic Light Sound Nuclear
Name a source of renewable energy
Hydroelectric, waves, tidal barrage, wind turbines, geothermal, solar
Name two non renewable sources of energy
coal, Nuclear, oil, gas, peat
What is the unit of measurement used to measure how loud something is?
Decibels
A very loud classroom measured at 115 decibels. How loud should it be if it should be 35 decibels lower
70 decibels
Which of the following is not a type of energy?
Heat Electrical Solar Kinetic Sound
Solar
Name 3 sources of renewable energy
Wind turbines, solar panels, wave and tidal power, geothermal, hydroelectric dams
The frequency of a sound is measured in...
Hertz (HZ)
Renewables are used to make 70% of Scotland's electricity.
Fossil fuels generate 8% of Scotland's electricity. The remainder comes from Nuclear. What percentage comes from nuclear energy?
22%
Sound Light Kinetic Heat Electrical
Why are renewable sources of energy like wind turbines and solar panels good for making energy?
They will not run out and do not create pollution and are cheap to run
What do we mean by non renewable energy sources?
Energy sources that will eventually run out
What affect does length have on pitch?
Length increases pitch
What form of energy do wind turbines use to generate electricity?
Kinetic
What do we mean by a renewable source of energy?
A source of energy that will not run out
(NOT energy that can be re used / a natural source of energy)
Fossil fuels and nuclear energy are both non renewable sources of energy. What is the difference between them?
Nuclear - made using nuclear elements, makes nuclear waste
Fossil fuels - made from dead animals and plants, make greenhouse gases.
Cats can make frequencies of sound that are 5000 Hz. Humans can only make up to 2500 HZ. How many times bigger is the maximum frequency a cat can make compared to a human?
2
Cats can make frequencies of sound that are 5000 Hz. Humans can only make up to 2500 HZ. How many times bigger is the maximum frequency a cat can make compared to a human?
2
What energy changes takes place when petrol is set on fire?
Chemical energy --> Light, heat, and sound
State a disadvantage of solar panels, wave power and geothermal power.
Solar panels - not always sunny / panels need cleaning / lots of space
Waves - waves change in height and setting everything up is expensive
Geothermal - can only be build in places with lots of heat being made
Why are fossil fuels a bad source of energy
?
I could not think of a question. If you picked this one - well done - you got 500 points for free.
If you think this isn't fair... tough! life's not fair.
Humans have a hearing range of 20 to 2000 HZ. Dogs hear from 100 to 50,000 HZ. Cats can hear from 500 to 66000. What range of sounds can all three animals can hear?
100 - 2000