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

12.7 Chapter 12 Review: Energy Transfer — Quiz

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  • Questions count: 10
  • Passing grade: B+
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1.
How does a hot cup of tea lose energy from its surface?
Nothing
Magnetism
Conduction only
Convection and evaporation
2.
Which reduces heat loss from a drink?
A black thin cup
Blowing on it
Stirring constantly
A lid, double walls and shiny surfaces
3.
True or false? Energy is moved between stores by heating, light, sound, current or forces.
True
False
4.
In a vacuum flask the vacuum stops conduction and ____.
radiation
evaporation only
reflection
convection
5.
Which term matches this definition? “The movement of a heated fluid carrying energy.”
Radiation
Convection current
Conduction
Insulation
6.
True or false? Radiation needs particles to travel.
True
False
7.
Use the cooling curves. After 15 minutes, how much hotter is the shiny can than the black can?
Dr Dabour Hub Academy - figure 1
13 °C
52 °C
65 °C
5 °C
8.
A heater transfers 1000 J; 150 J is wasted. What is the efficiency?
85%
850%
7%
15%
9.
Which method transfers energy from the Sun to Earth?
Radiation
Conduction
Convection
Evaporation
10.
A purple stream rising from a heated crystal shows:
Conduction
Reflection
Convection
Radiation
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Part of Chapter 12: Energy Transfer — see every lesson and quiz in this unit.
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