Last updated on December 9th, 2023 at 09:09 pm
What is the range of laboratory thermometers?
a) -10°C to 110°C
b) 35°C to 42°C
c) -10°C to 35°C
d) 42°C to 110°C
Answer: a) -10°C to 110°C
What is the normal temperature of the human body?
a) 35°C
b) 42°C
c) 37°C
d) 110°C
Answer: c) 37°C
How does heat flow from one object to another?
a) Conduction
b) Convection
c) Radiation
d) All of the above
Answer: d) All of the above
Which method of heat transfer is primarily observed in solids?
a) Conduction
b) Convection
c) Radiation
d) All of the above
Answer: a) Conduction
In which states of matter is heat primarily transferred by convection?
a) Solids
b) Liquids
c) Gases
d) Both b) and c)
Answer: d) Both b) and c) – Liquids and gases
Which method of heat transfer does not require a medium?
a) Conduction
b) Convection
c) Radiation
d) Both a) and b)
Answer: c) Radiation
Materials that allow heat to pass through them easily are called:
a) Insulators of heat
b) Conductors of heat
c) Reflectors of heat
d) Absorbers of heat
Answer: b) Conductors of heat
What are materials called that do not allow heat to pass through them easily?
a) Conductors
b) Insulators
c) Radiators
d) Reflectors
Answer: b) Insulators
Which type of objects absorb more heat: dark-colored or light-colored?
a) Dark-colored objects
b) Light-colored objects
c) Both absorb the same amount of heat
d) It depends on the material, not the color
Answer: a) Dark-colored objects
Why do we feel more comfortable wearing light-colored clothes in the summer?
a) Light-colored clothes reflect heat
b) Light-colored clothes absorb more heat
c) Light-colored clothes are more breathable
d) Light-colored clothes have better insulation properties
Answer: a) Light-colored clothes reflect heat
Why do woollen clothes keep us warm during winter?
a) Wool absorbs heat from the environment
b) Wool reflects heat away from the body
c) Wool is a good conductor of heat
d) Wool is a poor conductor of heat and traps air between its fibers
Answer: d) Wool is a poor conductor of heat and traps air between its fibers
