WorksheetsQuiz on Heat for Class 7 Science
Total questions: 18
Worksheet time: 9mins
Which of the following is an insulator?
Graphite
Air
Aluminium rod
Copper rod
Which of the following is the best conductor of heat?
Water
Metals
Water vapour
Alcohol
Heat of the sun reaches the earth by?
Conduction
Through air
Radiation
Convection
During the night, which cools more quickly?
Land
None of the above
Sea water
Both cool at the same rate
Mercury is generally used in thermometers because it has a?
High density
High specific heat
High fluidity
High conductivity
Which device is used for measuring the temperature of the human body?
Stethoscope
Clinical thermometer
Laboratory thermometer
None of these
Normal body temperature is?
37°C
27°C
17°C
39°C
Glass, plastic, and wood are examples of?
Insulator
Conductor
Convectors
Radiators
In which mode of heat transfer does the transfer of heat occur as a wave?
Conduction
Convection
All of these
Radiation
A wooden spoon dipped in a cup of ice-cream, its other end?
Does not become cold
Becomes cold by radiation
Becomes cold by conduction
Becomes cold by convection
Heat is a form of?
Energy
Power
Temperature
Work
10°C is equal to?
183 K
173 K
273 K
283 K
On a Fahrenheit scale, the boiling point of water is?
0°F
212°F
100°F
32°F
Which type of cloth is preferred in summer?
Silk clothes
Cotton clothes
Nylon clothes
Polyester clothes
When two bodies at different temperatures are placed in thermal contact, heat flows from?
Colder body to hotter body
Hotter body to colder body
Both bodies equally
None of the above
Thermos flask keeps hot liquid hot and cold liquid cold by?
Cooling
Using coolant
Preventing heat loss
Heating
The clinical thermometers in use in India are marked with a temperature scale that corresponds to?
Celsius
Both (a) and (b)
Fahrenheit
None of these
The process of change of state from gaseous state to liquid state is called?
Sublimation
Boiling
Condensation
Freezing
