The principle of conservation of energy
The total amount of energy, possessed by an object, remains the same. This phenomenon is the principle of conservation of energy, which states, that energy can neither be created nor destroyed, but only converted into other forms.
If mass and energy are considered together, the total amount of mass and energy remains the same. The principle of mass conservation has been modified into what is called the principle of conservation of mass — energy. The Theory of Relativity shows that mass and energy can be considered to be totally interconvertible, and the amount of energy produced, when matter is destroyed, is given by the well — known equation E = mc>2 (E is the energy released, m is the mass destroyed, and c is the velocity of light).
1.6. Составьте предложения по образцу:
Ответы выделены полужирным курсивом.
Pattern 1. Physicists classify energy into several types: kinetic, potential, heat, sound, radiant, electrical, chemical and nuclear energy.
Физики классифицируют энергию на несколько типов: кинетическую, потенциальную, тепловую, звуковую, энергию излучения, электрическую, химическую и ядерную.
1. Physicists classify physical science into several fields: mechanics, sound, heat, electricity, etc.
2. Physicists classify particles into several types: electrons, protons, neutrons, etc.
3. Physicists classify states of matter into several types: solid, liquid, gas, plasma
4. Physicists classify solids into two types: “true” and amorphous.
5. Physicists classify substances in solution into two types: crystalloids and colloids
Pattern 2. The two principal forms of kinetic energy are known as translation and rotational. Две основные формы кинетической энергии известны как поступательная и вращательная
1. The two branches of physics are known as experimental and theoretical physics.
2. The four states of matter are known as solid, gas, liquid and plasma.
3. The three principal types of forces are known as gravitational, friction and viscous forces.
4. The two principal types of substances in solution are known as colloids and crystalloids.
5. The two types of solids are known as “true” and amorphous
Pattern 3. Kinetic energy is possessed by an object by virtue of its motion. Кинетической энергией обладает объект в силу своего движения.