Curriculum
Course: Science — Second Preparatory
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Curriculum

Science — Second Preparatory

Unit 1: Matter and Energy

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Unit 2: Matter and Chemical Reactions

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Unit 3: Energy Flow in Photosynthesis and Respiration

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Unit 4: Geological Processes

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Quiz

Heat Transfer — Lesson quiz

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  • Questions count: 6
  • Passing grade: 60%
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1.
Which method of heat transfer happens in a vacuum?
Conduction
Convection
Sublimation
Radiation
2.
Why are cooking pot handles made of plastic or wood?
Because they are poor conductors, so heat does not pass to the hand
Because they are good conductors that heat quickly
Because they reflect radiated heat strongly
Because they absorb heat through convection from water
3.
Why do convection currents form when water is heated from below?
Because cold, less dense water rises to the top
Because the warm, less dense water rises and the cooler, denser water sinks
Because warm, denser water sinks to the bottom
Because water absorbs radiation only from below
4.
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
5.
Why does a sea breeze blow from the sea to the land during the day?
Because the sea heats faster than the land, so its air rises
Because cold air rises above the land during the day
Because the sea moves away from the land during the day
Because the land heats faster than the sea, so warm air above the land rises and cooler sea air moves in
6.
In which medium does convection not happen?
In solids
In water
In air
In oil
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