7th Grade > Physics
HEAT MCQs
Total Questions : 118
| Page 2 of 12 pages
Answer: Option A. -> True
:
A
Clinical thermometers can measure temperatures from35°Cto42°Cwhereas the range of laboratory thermometers is−10°Cto110°C. So it is true that it can measure higher temperatures.
:
A
Clinical thermometers can measure temperatures from35°Cto42°Cwhereas the range of laboratory thermometers is−10°Cto110°C. So it is true that it can measure higher temperatures.
Answer: Option A. -> True
:
A
As we increase the temperature, the random motion of the particles of a body increases because their kinetic energy increases. So, they are more active than molecules in a cold body.
:
A
As we increase the temperature, the random motion of the particles of a body increases because their kinetic energy increases. So, they are more active than molecules in a cold body.
Answer: Option A. -> Land
:
A
Land cools down faster than water. As a resultduring night, the air above land becomes cooler than that above sea. So, a breeze blows from land to seaand we call thatland-breeze.
:
A
Land cools down faster than water. As a resultduring night, the air above land becomes cooler than that above sea. So, a breeze blows from land to seaand we call thatland-breeze.
Answer: Option C. -> Max-Min or Six's thermometer
:
C
A Max-Min or Six's thermometer is used to measure the maximum and minimum temperatures of the day.
The Six'sthermometeris a registering thermometerwhich can record themaximumandminimum temperatures reached over a period of time, for example, 24 hours. It is used to record the extremes of temperature at a location.
:
C
A Max-Min or Six's thermometer is used to measure the maximum and minimum temperatures of the day.
The Six'sthermometeris a registering thermometerwhich can record themaximumandminimum temperatures reached over a period of time, for example, 24 hours. It is used to record the extremes of temperature at a location.
Answer: Option C. -> temperature
:
C
Temperature is a measure of the degree of hotness or coldness of a body.It is proportional to the average kinetic energy of all the molecules presentin an object. It is represented according to a comparativescale and is measuredby a thermometer.
:
C
Temperature is a measure of the degree of hotness or coldness of a body.It is proportional to the average kinetic energy of all the molecules presentin an object. It is represented according to a comparativescale and is measuredby a thermometer.
Answer: Option B. -> Thermometer
:
B
A thermometer is an instrument used for measuring temperature. Some of the common thermometers used are clinical, lab and digital thermometer.
Amanometer is an instrument used to measure pressure differences.
An ammeter is used to measure current.
A stethoscopeis an acoustic medical device used forlistening to the internal sounds of an animal or human body.
:
B
A thermometer is an instrument used for measuring temperature. Some of the common thermometers used are clinical, lab and digital thermometer.
Amanometer is an instrument used to measure pressure differences.
An ammeter is used to measure current.
A stethoscopeis an acoustic medical device used forlistening to the internal sounds of an animal or human body.
Answer: Option D. -> does not become cold
:
D
The other end of wooden spoon does not become cold as wood is a poor conductor of heat and electricity and hence, it belongs to the category of insulators.
:
D
The other end of wooden spoon does not become cold as wood is a poor conductor of heat and electricity and hence, it belongs to the category of insulators.
Answer: Option A. -> Clinical thermometer
:
A
A clinical thermometer is used to measure body temperature. It indicates temperatures from a minimum of 35∘Cor95∘F to a maximum of 42∘Cor108∘F.
:
A
A clinical thermometer is used to measure body temperature. It indicates temperatures from a minimum of 35∘Cor95∘F to a maximum of 42∘Cor108∘F.
Answer: Option A. -> conductor
:
A
A conductor allowsheat to pass through it whereas an insulator obstructs the passage of heat. A radiator is a substance which emits heat or light.
:
A
A conductor allowsheat to pass through it whereas an insulator obstructs the passage of heat. A radiator is a substance which emits heat or light.
Answer: Option C. -> sublimation
:
C
Sublimationis aprocess where a solid turns into a gas without going through a liquid stage. Solid carbon dioxide which is more commonly known as "dry ice"sublimates at room temperature.
:
C
Sublimationis aprocess where a solid turns into a gas without going through a liquid stage. Solid carbon dioxide which is more commonly known as "dry ice"sublimates at room temperature.
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