it´s hot in there
the sound of the river
mechanical
production
production2
100
what type(s) of energy comes from the sun?
Thermal and light energies
100
sound energy is caused by ...?
Vibration
100
what is the energy that comes from motion?
kinetic energy
100
how do these structures produce energy?
with Wind
100
solar panels / solar energy
200
the propagation of heat through metal is called?
conduction
200
what is the name of the structure in our body that gives us our sound?
vocal cords
200
what type of energy do (a stretched spring, and a compressed) have?
Potential energy
200
advantages if the wind energy
clean - renewable - cheap
200
advantages of the solar energy
safe - renewable - clean
300
it is the cycle of heat from hot to cold 
convection
300
what is the unwanted sound called?
sound pollution
300
name the type of mechanical energy you see:
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potential energy
300
disadvantages of the wind energy
can hurt the birds - ineffective when there´s no wind - can have an impact on the area
300
disadvantages of solar energy
the panels need a lot of space - sunlight is not equally distributed all over earth, and all the time
400
the heat of the sun reaches us through... 
radiation
400
what are the advantages of hydraulic energy production?
cheap - safe - clean - can be used when needed
400
name three non-renewable energy sources
natural gas - fossil fuels (petrol) - coal - nuclear (uranium)
400
disadvantages of thermoelectric energy production
causes pollution - is nonrenewable
400
what is the advantage of nuclear power?
very clean
500
what is the flow of thermal energy?
Heat
500
what are the disadvantages of hydroelectric energy?
affected by seasons - can affect the biodiversity
500
name ALL the types of energies you recognize in the picture 
kinetic - thermal - sound
500
true or false: all the natural energy sources don´t pollute.
(and why?)
FALSE (Biomass)
500
advantages of the biomass
cheap - less waste - renewable