W3.CSS
The Sun is a major source of:
Heat from the Sun reaches Earth by:
When the air in a car tyre becomes hot, it expands causing the pressure it exerts to:
A sea breeze occurs during the day when the air over the land is -------------------than the air over the sea.
There are 100 Celsius degrees between the freezing point of water and the ------------- point of water.
Heat energy is because of the movement of:
Heat is transmitted through solids by a process called:
On heating, solids expand in all:
A thermometer is the Instrument used for measuring:
on heating, the kinetic energy of molecules:
Remains constant
May increase or decrease
Ice point on Celsius Scale is taken as:
The boiling point of water on Centigrade Scale is:
Melting point of ice on Fahrenheit Scale is taken as:
Mercury is a good thermometric material because:
It is opaque
It is shining
Its thermal expansion inconstant
It is transparent
The normal temperature of a healthy person's body is about:
A vacuum flask minimizes:
The same thing
Not the same thing
The new thing
None of those
Different object expand at:
Different rates
Same rates
Temperature of human body is measured by:
Fahrenheit thermometer
Clinical thermometer
Minimum
Maximum thermometer
liquids expand ----------— than solids.
More
None of these a better
A black surface is a better ----------- and absorber of heat than a white surface.
Substances which do not allow heat to pass through them are called:
---------- is the transmission of heat by waves emitted by hot substances.
