Flow of Heat
Important Questions on Flow of Heat
A thermos is used to keep a hot liquid hot for a longer time. Do you think that a thermos flask can also keep cold water cool for a longer time?
Look at the pictures shown below and answer the questions that follow.
What is the direction of breeze during nighttime?
Look at the pictures shown below and answer the questions that follow.
Why do the breezes blow from the sea to the land during the day?
Why do many cooking utensils have copper coating at the base?
Persons A and B are sleeping in a tent on a cold winter night. Person A has a thick woollen blanket and person B has two thin woollen blankets placed one over the other. Who do you think will be feeling warmer and sleeping more comfortably?
How is conduction different from radiation?
Explain how conduction of heat occurs in metals.
Give one- or two-word answers for the following.
The mode of transfer of heat in liquids.
Define the following.
Thermos flask
State whether the given statement is True or False. Correct the false statement.
The sunlight reaches us by conduction.
In case of solids, heat is transferred by the process of conduction.
Gases are good conductors of heat.
The heat from the Sun to the Earth reaches in the form of _____.
Sea breeze and land breeze are examples of _____ current.
What is the constant movement of water on being heated is called?
Which of the following modes of heat transfer does not need a medium?
Which of the following is not a conductor of heat?
State whether the given statement is True or False. Correct the false statement.
Heat can only be transferred through a medium.
State whether the given statement is True or False. Correct the false statement.
Sea breeze occurs in the night.
State whether the given statement is True or False. Correct the false statement.
People should wear light-coloured clothes in the winter.
