First 219 words of the document:
Q1 What is heat measuring?
Q2 What is temperature measuring?
Q3 What is specific heat capacity? And what is the equation?
It tells you how much energy stuff can store
Energy = mass X specific heat capacity X temperature change
Q4- What is specific latent heat? And what is the equation?
It is the energy needed to change state?
Energy = mass X specific latent heat
Q5 What state does conduction take place in?
Q6 What state(s) does convection occur in?
Q7 Where does radiation come from?
Q8 Do all objects emit and absorb heat radiation?
Q9 What is payback time?
How long it takes to save the money that you have spent on something
Q10 What is a thermo gram?
It is a picture that shows up all of the heat in different colours
It can show where heat is being lost from a house
Q11 What is the equation for efficiency?
Efficiency = useful energy output / total energy input (X100%)
Q12 What is a sankey diagram?
It is a diagram showing the arrows that represent amounts of energy that are lost
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Q13 What is the equation for wave speed?
Speed = frequency X wavelength
Q14 What properties do waves have?
Q15 What is the law of reflection?
Angle of incidence = angle of reflection
Q16 What is it called when a wave hits a surface?
Total internal reflection
Q17 What is diffraction?
When waves spread out
Q18 What is refraction?
When the angle of reflection changes because it is travelling through a more or less dense
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Q24 What are infrared waves mainly used for?
Q25 What are radio waves mainly used for?
Q26 What can refraction do?
It can make the radio waves travel further
Q27 What does digital radio help reduce?
Q28 What are microwaves used for?
Q29 Why are some people saying that living near a mobile phone mast is dangerous?
Microwaves can radiate onto the people living below
It can damage your health
Q30 What is…read more