Heat
Maximum Marks : 3
Who found that heat is a form of energy?
What is temperature?
What is a laboratory thermometer ?
What is a maximum-minimum thermometer?
Why cannot we use a laboratory thermometer to measure the temperature of our body?
What are conductors and insulators?
What is conduction?
What is convection?
What is radiation?
Maximum Marks : 5
What is heat?
Describe a clinical thermometer?
What are the precautions to be Observed while reading a Clinical Thermometer?
What are the precautions to be taken while using a Laboratory Thermometer?
Describe sea breeze and land breeze.
We wear dark colored clothes in winter. Why?
What is the use of woolen clothes?
Fill in the blanks:
and performed various experiments and explained that heat is a form of energy.
and are relative terms.
Heat is a form of energy that spontaneously moves from the to its . or vice-versa.
When two objects attain the same temperature they are said to attain the . . .
and of a body is measured as temperature.
is mostly measured in degrees Celsius (oC).
Our body temperature is measured with the help of a .
Clinical thermometer is also called .
The clinical thermometer shows the temperature from to . .
The thermometer with had a range from 94oF to 108oF.
The only metal that exists as liquid at room temperature is .
The normal body temperature is .
The celsius scale was devised by Swedish astronomer in . .
measures the temperature in the range of -10oC to 110oC.
measures the maximum and minimum temperature of the day.
When a hot body and a cold body are in contact, the hot body heat while the cold body heat.
The substances which allow heat to flow through them are called of heat.
The substances which do not allow heat to pass through them easily are called bad conductors of heat or .
Water and air are conductors of heat.
Cooking utensils are made of and their handles are made of . .
In solids, heat is transferred by the process of .
In liquids and gases, heat is transferred by .
The breeze which blows from the sea to the land in coastal areas is called . .
The breeze which blows from the land to the sea in the coastal areas is called the .
needs no medium to transfer heat from one place to another.
Radiation can take place in .
The higher the temperature of a body, the more heat it .
When heat falls on objects like trees, soil, water, human beings etc some of it is . . ., some is and a part of it is .
The amount of absorption and reflection of radiant heat depends upon . . and . .
Shiny and smooth surfaces heat, whereas black and rough surfaces . heat.
Black surface is a better and of heat than the white surface.
We wear woolen clothes in winter because wool is a of heat ( . ).
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