Curriculum
Course: Alhussan Physics — Stage 9
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Curriculum

Alhussan Physics — Stage 9

Chapter 11: Forces and Density

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Chapter 12: Energy Transfer

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Chapter 13: Sound Waves

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Chapter 14: Electrical Circuits, Resistance and Power

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Chapter 15: The Earth in Space (Universe and Stars)

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Quiz

12.4 Energy transfer: convection — Quiz

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  • Questions count: 10
  • Passing grade: B+
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1.
Which term matches this definition? “Energy transfer by the movement of a heated fluid.”
Conduction
Evaporation
Convection
Radiation
2.
In which materials can convection happen?
Metals only
Solids only
A vacuum
Liquids and gases
3.
Why do warm fluids rise?
They are pushed by light
They expand and become less dense
They become heavier
They lose particles
4.
True or false? Firefighters crawl low because hot smoky air rises.
True
False
5.
The freezer box is at the ____ of a fridge so cold air sinks.
top
side
bottom
back
6.
True or false? Heaters are best placed high near the ceiling.
True
False
7.
A crystal in water heated at one corner makes a purple stream. What does it show?
Dr Dabour Hub Academy - figure 1
A convection current
Evaporation
Radiation
Conduction in water
8.
Air above land is 32 °C and above sea 24 °C. What is the difference?
24°C
32°C
8°C
56°C
9.
How do gliding birds climb high?
They flap faster
They use magnetism
They ride rising warm air (convection currents)
They follow wind down
10.
Why does the land heat faster than the sea in the day?
Land heats up more quickly
The sea moves
The sea is hotter
Land reflects all light
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Part of Chapter 12: Energy Transfer — see every lesson and quiz in this unit.
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