Worksheetsheat
Total questions: 10
Worksheet time: 8mins
Convection is faster mode of heat transfer than radiation.
True
False
Nights are cooler in the deserts because ___________
the sky is generally clear
sand radiates heat more quickly as compared to earth
the sky is generally cloudy
Sand radiates heat less quickly as compared to earth
A poor man wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because ___________________
newspaper is at a higher temperature than the temperature of the surroundings.
Friction between the layers of newspaper produces heat
air trapped between the layers of newspaper is a bad conductor of heat
newspaper is a conductor of heat
The range of the Clinical thermometer is from ______ to ______.
-10°C to 110°C
10°C to 110°C
32°C to 45°C
35°C to 42°C
A marble tile would feel cold as compared to a wooden tile on a winter morning, because the marble tile _____________
is polished while wooden tile is not polished
Is a poor conductor of heat than the wooden tile.
reflects more heat than wooden tile
Is a better conductor of heat than the wooden tile
The diagram shows a vacuum flask and an enlarged view of a section through the flask wall. The main reason for the silvering is to reduce heat transfer by ______________
conduction and convection
radiation only
conduction only
radiation and convection
Given below are four arrangements of laboratory thermometer .Identify the correct arrangement.
Expansion of a substance on heating depends on
b) rise in temperature
d) both A and B
a) nature of the substance
c) color of the substance
We receive heat energy from the sun through ______ mode of transmission
conduction
convection
radiation
yet to be found
Conduction is possible
when the bodies are apart from each other
when the bodies have same temperature and in thermal contact
when they have different temperatures maintaining distance between them
bodies should be in contact and should have different temperatures
