Worksheetstemperature
Total questions: 13
Worksheet time: 7mins
who invented temperature
Galileo Galilei
Elena
Alice
Luna
Which of the following is the fastest process of heat transfer?
conduction
convection
radiation
insolation
The factors directly proportional to the amount of heat conducted through a metal rod is -
Time of flow of Heat
Area of cross section
Temperature gradient
All the above
Q.3 1 gm of ice at 0° C is mixed with 1 gm of steam at 100° C. After thermal equilibrium, the temperature of the mixture is
0° C
50° C
80° C
100° C
What would be the thermal resistance of an ideal conductor?
Zero
One
Infinity
Ten
Why does the bottom of a lake not freeze in severe winter even when the surface is all frozen?
The water has a large specific heat
The conductivity of ice is low
The water has a large latent heat of fusion
The temperature of the earth at the bottom of the lake is high.
A cooking pot is coated black because -
black substances absorb more heat
black substances reflect more heat
black surfaces are easier to clean
the material of the pot would not be damaged
Specific heat is -
the specific temperature at which the substance is in a solid state.
the energy needed to increase the temperature of 1 gram of a substance by 1 degree Celsius.
the amount of heat conducted in 1 minute.
the heat needed to increase the temperature of 1 gallon of water by 1 degree Fahrenheit.
A block of ice
cannot radiate heat
can radiate heat but cannot absorb heat
can absorb heat but cannot radiate heat
can radiate as well as absorb heat
As a solid undergoes a phase change to a liquid state, it
releases heat while remaining at a constant temperature.
absorbs heat while remaining at a constant temperature.
releases heat as the temperature decreases.
absorbs heat as the temperature increases.
A cup of hot tea on a metal table in a room loses heat by
Conduction
Convection
Radiation
All the above
Which among the following is true of a sphere, a cube and circular plate of a same material and same mass heated to the same temperature?
Sphere cools the slowest
Circular plate cools the fastest
Cube cools the fastest
Circular plate cools the slowest
At what temperature are the Celsius and Fahrenheit equal?
+ 40o
- 40o
- 0o
+ 100o
