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Question-1
Materials that do not allow heat to pass through them easily are called:
(A)
Conductors
(B)
Insulators
(C)
Radiators
(D)
Transmitters
Question-2
Which of the following surface absorbs energy most rapidly?
(A)
White surface
(B)
Polished surface
(C)
Black surface
(D)
All the above
Question-3
Energy can travel through air or vacuum as:
(A)
Electricity
(B)
Electromagnetic waves
(C)
Sound
(D)
Force
Question-4
In Celsius scale, the lower fixed point 0
o
C is the:
(A)
Melting point of ice
(B)
Freezing point of water
(C)
(a) or (b)
(D)
Boiling point of water
Question-5
The rate of evaporation depends on the :
(A)
Density of liquid
(B)
Kind of liquid
(C)
Colour of liquid
(D)
Volume of liquid
Question-6
Convection can only occur in:
(A)
Liquids and solids
(B)
Solids and gases
(C)
Liquids and gases
(D)
Solids
Question-7
The temperature at which a solid melts is called its:
(A)
Boiling point
(B)
Freezing point
(C)
Melting point
(D)
Absolute zero
Question-8
Convection cannot occur in:
(A)
Liquids
(B)
Solids
(C)
Gases
(D)
Liquids and gases
Question-9
The total amount of heat in a substance is related to its:
(A)
Mass
(B)
Volume
(C)
Pressure
(D)
Density
Question-10
Vaporization takes place from the surface of a liquid at all temperature. This is known as:
(A)
Evaporation
(B)
Condensation
(C)
Melting
(D)
Freezing
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Cambridge Secondary Grade 8
IGCSE
Practice in Related Chapters
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Speed
A closer look at Heat Energy
Magnetism
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