41
mark, v/n.
/mɑːk/
отмечать, обозначать, маркировать
отметка, обозначение, маркировка
oscillate, v.
/ˈɒsɪleɪt/
двигаться
взад
и
вперед,
колебаться, осциллировать
peculiar, adj.
/pɪˈkjuːliər/
особенный, своеобразный,
syn. especial, unusual
place, v.
/pleɪs/
ставить, помещать, размещать, syn.
put
popsicle, n.
/ˈpɒpsɪkl /
мороженое на палочке
scale, n.
/skeɪl/
размер, масштаб, шкала
shape, n.
/ʃeɪp/
форма, очертание
shift, n.
/ʃɪft/
сдвиг, изменение
thermal, adj.
/ˈθɜːməl/
теплый, термальный; тепловой
thermometer, n. /θəˈmɒmɪtər/
термометр
wax, n.
/wæks/
воск
READING
Read and translate the text using a dictionary if necessary:
To discuss the
thermal properties of matter, we need to define some
general
thermal concepts, such as: the difference between heat and
temperature, thermal equilibrium, the
zeroth law of thermodynamics, and
the absolute temperature scale.
In everyday language we use the terms «heat» and «temperature»
loosely as if they had the same meaning. In physics they have different
meanings. Consider the following example.
Take a beaker half filled with water and place some ice in it.
Put a
thermometer in the water and wait till the temperature of the water becomes
stable so that the temperature of the water and the ice are the same. Now
place the beaker over a Bunsen burner and start heating it. You will notice
that the temperature of the water stays the same as long as there is ice left.
We all agree that the flame is heating the water but the thermometer says
that the temperature does not change. Once all the ice melts, the temperature
of the water starts to rise. From this we can see that we need to closely
examine our ideas about the meanings
of heat and temperature and
distinguish them. Temperature is related to the average kinetic energy of the
particles (atoms or molecules). Heat is the amount of energy transferred to a
42
system of particles. In the above examples, we were transferred heat to the
system, which in turn melted the ice but the temperature did not change.
Достарыңызбен бөлісу: