Heat 0.0 / 5 ? PhysicsHeat EnergyIGCSEEdexcel Created by: DiHydroCreated on: 02-05-16 18:23 What does IR stand for? Infra-red 1 of 16 Can IR Radiation travel through vacuum? Yes 2 of 16 How fast does IR radiation travel? Over 300,000,00 m/s 3 of 16 What can IR radiation not pass through? Opaque Materials 4 of 16 What objects emit thermal energy? All Objects 5 of 16 Do dark/dull objects reflect or absorb radiation? Absorb 6 of 16 Do light/shiny objects reflect or absorb radiation? Reflect 7 of 16 How does the plastic stopper in a thermos flask prevent thermal transfer? The plastic is an insulator 8 of 16 If two different volumes of water were heated which would heat quicker? The smaller volume 9 of 16 What is the definition of 'conductors?' Something that lets energy pass along it. 10 of 16 What is definition of 'insulators?' Something that does not let energy pass along it. 11 of 16 What particles vibrate a lot? Hot particles 12 of 16 What particles vibrate a little? cold partices 13 of 16 Is glass a conductor? yes 14 of 16 How does double glazing act as an insulator? The air gap in-between acts as insulator due to a lack of particles. 15 of 16 What happens when a substance gets hot? It expands 16 of 16
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