Curriculum
Course: Science — Second Preparatory
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Curriculum

Science — Second Preparatory

Unit 1: Matter and Energy

0/8

Unit 2: Matter and Chemical Reactions

0/6

Unit 3: Energy Flow in Photosynthesis and Respiration

0/4

Unit 4: Geological Processes

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Quiz

Heat Transfer — Lesson quiz

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  • Questions count: 1
  • Passing grade: 60%
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1.
Why is the inner wall of a vacuum flask shiny?
To increase conduction through the flask wall
Because shiny colours absorb radiation efficiently
To reduce radiation, because shiny surfaces reflect it
To increase convection inside the flask