WorksheetsHEAT FLOW AND TEMPERATURE
Total questions: 10
Worksheet time: 8mins
Which of the following conditions enables heat to flow from one body to another body?
The difference in temperatures of two bodies
The difference in pressures exerted on the two bodies
The difference in densities of two bodies
The difference in sizes of two bodies
What is the range of a clinical thermometer?
0°C to 100°C
32°F to 214°F
0°C to 273°C
35°C to 42°C
Why are tea cups never made of metal?
Metals are good conductors of heat
Metals are bad conductors of heat
Metals have high melting point
Metals are expensive
Riaz needs a box which can absorb the heat from the sun very fast but lose it very slowly. How should the outer and the inner surface of the box be colored so that he gets the best result?
Outer-Silver,
Inner-Silver
Outer-Black,
Inner-Black
Outer - Silver, Inner - Black
Outer - Black, Inner - Silver
Which part of a thermos flask prevents loss of heat through radiation?
Cork stopper
Double glass walls
Vacuum
Shiny/silvery wall
Convert 148°C to Kelvin.
420K
419K
421K
423K
Conduction of heat does not take place in
copper
iron
aluminium
vacuum
Which of these phenomena is caused due to convection?
Ocean currents
Sea breeze
Boiling of water
All of the above
Paper pins are stuck to a metal rod with wax and a lighted candle is kept below the rod as shown in the diagram below. Which one of the paper pins will fall off the metal rod first?
P
Q
R
S
There are four cups made of different materials: Silver, aluminium, wood and copper. In which of them will tea remain warm for a longer time?
Silver cup
Aluminium cup
Wooden cup
copper cup
