# Английский язык. Ильичева Н.А - 42 стр.

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42
increases but temperature changes are d) the same / different for different
substances. The greater the specific heat of a substance the greater is its e)
capacity / size for heat. The amount of heat necessary f) to transform /
change the temperature of a given amount of substance depends on the mass,
the specific heat and the temperature change.
3. Choose from the list A-H the headlines which best suit each part of the
text that follows. There is an extra headline which you do not need to
use.
A. Specific heat of a substance.
B. Latent heat.
C. Units of specific heat.
D. Determining the original amount of energy.
E. A common unit for measuring heat.
F. Measuring the amount of heat necessary to change the temperature of a given
amount of substance.
G. Thermal equilibrium.
H. Heat as energy transfer.
0 G
When a pot of cold water is placed on a hot burner of a stove, the
temperature of the water increases. We say that heat flows from the hot burner
to the cold water. The spontaneous flow of heat is always in the direction to
equalize the temperature. We commonly speak of the flow of heat heat
flows form a stove burner to a pot of coffee, from the Sun to the Earth, from a
persons mouth into a fever thermometer. If the two objects are kept in contact
long enough for their temperatures to become equal, the two bodies are said to
be in thermal equilibrium, there is no heat flow between them.
1
When heat flows from a hot object to a cooler one, it is energy that is
being transferred from the hot to the cold object. Thus, heat is a form of
energy. The ultimate sources of heat are the kinetic and potential energies of
molecules.
2
Energy transfer involves work. For example, when we do work, there is
frequently a substantial amount of heating caused by friction. The conservation
                                         42

increases but temperature changes are d) the same / different for different
substances. The greater the specific heat of a substance the greater is its e)
capacity / size for heat. The amount of heat necessary f) to transform /
change the temperature of a given amount of substance depends on the mass,
the specific heat and the temperature change.

3. Choose from the list A-H the headlines which best suit each part of the
text that follows. There is an extra headline which you do not need to
use.

A. Specific heat of a substance.
B. Latent heat.
C. Units of specific heat.
D. Determining the original amount of energy.
E. A common unit for measuring heat.
F. Measuring the amount of heat necessary to change the temperature of a given
amount of substance.
G. Thermal equilibrium.
H. Heat as energy transfer.

0       G
When a pot of cold water is placed on a hot burner of a stove, the
temperature of the water increases. We say that heat flows from the hot burner
to the cold water. The spontaneous flow of heat is always in the direction to
equalize the temperature. We commonly speak of the “flow” of heat – heat
flows form a stove burner to a pot of coffee, from the Sun to the Earth, from a
person’s mouth into a fever thermometer. If the two objects are kept in contact
long enough for their temperatures to become equal, the two bodies are said to
be in thermal equilibrium, there is no heat flow between them.

1
When heat flows from a hot object to a cooler one, it is energy that is
being transferred from the hot to the cold object. Thus, heat is a form of
energy. The ultimate sources of heat are the kinetic and potential energies of
molecules.

2
Energy transfer involves work. For example, when we do work, there is
frequently a substantial amount of heating caused by friction. The conservation