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Physics 9 Chapter 9 - Transfer of Heat - 11
1.
Sea breeze blows from...................................?
a) Sea to land during night
b) Land to sea during night
c) Sea to land during the day
d) Land to sea during the day
2.
What looks like a small aeroplane without engine?
a) Paratrooper
b) Parachute
c) Slider
d) Glider
3.
Due to which process of transfer of heat, glider pilots use upward movement of hot air currents?
a) Electromagnetic waves
b) Conduction
c) Convection
d) Radiation
4.
Glider pilots use .......................movement of hot air currents, due to convection of heat?
a) Right side
b) Left side
c) Downward
d) Upward
5.
What are the rising currents of hot air called?
a) Thermals
b) Resistors
c) Regulators
d) Boilers
6.
Which of the following are expert thermal climbers?
a) Eagles
b) Crows
c) Sparrows
d) Parrots
7.
Which of the following are expert thermal climbers?
a) Sparrows
b) Parrots
c) Crows
d) Hawks
8.
What is the major source of heat energy?
a) Sun
b) Heaters
c) Cylinders
d) Moon
9.
Due to which process, heat energy of the sun reaches the earth?
a) Electromagnetic waves
b) Convection
c) Conduction
d) Radiation
10.
Which of the following are expert thermal climbers?
a) Parrots
b) Sparrows
c) Vultures
d) Crows
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