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Physics 9 Chapter 8 - Thermal Properties of Matter -3
1.
Which of the following flower closes when temperature drops from 23
o
C?
a) Rose flower
b) Brassica Campestris
c) Mustard flower
d) Crocus flower
2.
Which of the following is correct about crocus flower?
a) It closes when temperature drops from 23
o
C
b) It opens when temperature is 23
o
C
c) All of these
d) It is called natural thermometer
3.
Which of the following is called energy in transit?
a) Sound
b) Heat
c) Light
d) Waves
4.
What is heat called?
a) Thermometric energy
b) Energy in transmit
c) Energy in transit
d) Energy in contact
5.
What is the sum of kinetic energy and potential energy associated with the atoms, molecules and particles of a body called?
a) Transit energy
b) Internal energy
c) In transit energy
d) External energy
6.
What is normal human body temperature?
a) 37
o
F
b) 98.6
o
C
c) 15
o
C
d) 37
o
C
7.
What is the sum of kinetic energy and potential energy of a body called?
a) External energy
b) Heat
c) Thermal equilibrium
d) Internal energy
8.
Upon which of the following factors, internal energy of a body depends?
a) Area of body
b) Mass of the body
c) Heat energy of a body
d) Length of body
9.
Upon which of the following factors, internal energy of a body depends?
a) Kinetic energies of molecules
b) Heat energy of a body
c) Length of body
d) Light energy of a body
10.
At what temperature, Crocus flower opens?
a) 36
o
C
b) 26
o
C
c) 23
o
C
d) 32
o
C
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