Provided that in each case heat input is the same, boiling takes place more quickly
1) at sea level.
2) in a valley.
3) in the mountains.
This is because
4) increased pressure on the surface of a liquid lowers its boiling point.
5) decreased pressure on the surface of a liquid lowers its boiling point.
6) water always boils quickest at sea level.
[Ques. 2] Evaporation of water from a tea kettle takes place
1) at the surface of the water,
2) at the bottom of the water,
3) throughout the water,
whereas boiling takes place
4) at the surface of the water.
5) at the bottom of the water.
6) throughout the water.
[Ques. 3] When air rapidly expands, its temperature will
1) decrease,
2) increase,
3) stay the same,
whereas when air is rapidly compressed, its temperature will
4) decrease.
5) increase.
6) stay the same.
[Ques. 4] When water at 4C is heated, it expands. When water at 4C is cooled, it
1) contracts,
2) expands,
3) neither contracts nor expands,
4) not enough information given,
which follows from the fact that
5) cooling decreases the kinetic energy of H2O molecules.
6) water has its greatest density at 4C.
7) we do not know how the water is cooled.
[Ques. 5] When a molecule collides with another that is approaching with greater momentum, its rebound speed
1) stays the same,
2) increases,
3) decreases,
and when a molecule collides with another that is receding, its rebound speed
4) stays the same.
5) increases.
6) decreases.
[Ques. 6] Which of the following expands most when temperature is increased?
1) iron
2) ice water
3) helium
4) all expand the same
Which of the following expands most when temperature is decreased?
5) iron
6) ice water
7) helium
8) all expand the same
[Ques. 7] Heat from the Sun gets to Earth by the process of
1) osmosis.
2) radiation.
3) molecular movement.
4) convection.
5) conduction.
When sunlight reaches Earth, it becomes
6) internal energy.
7) solar energy.
8) electromagnetic radiation.
[Ques. 8] Which of the following contracts the most when temperature is decreased?
1) iron
2) ice water
3) helium
4) All contract the same.
Which of the following contracts the most when temperature is increased?
5) iron
6) ice water
7) helium
8)All contract the same.
[Ques. 9] Which of the following expands most when temperature is decreased?
1) iron
2) ice water
3) helium
4)All expand the same.
Which of the following contracts most when temperature is decreased?
5) iron
6) ice water
7) helium
8) All contract the same.
[Ques. 10] The quantity that tells how warm or cold a body is with respect to some standard body is called
1) heat.
2) internal energy.
3) temperature.
4) molecular kinetic energy.
The internal energy that is transferred from one body to another because of a temperature difference is called
5) heat.
6) potential energy.
7) temperature.
8) molecular kinetic energy.
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