EjerciciosFyQ

Matching terms: types of energy and systems (2733)

F_y_Q — 2014-10-10T03:59:25Z

Define, in your own words, what energy is and provide two examples of systems; one with kinetic energy and another with gravitational potential energy. Match the terms to these two groups (letter-number):
a) Combustion of diesel ; b) Friction between a match and sandpaper ; c) A bee flying ; d) A plane that took off a minute ago ; e) A pole when it is completely bent.
1) Kinetic energy ; 2) Elastic potential energy ; 3) Mechanical energy ; 4) Chemical energy ; 5) Internal energy

- Energy / Types of energy, SOLVED

Energy transformations (1929)

F_y_Q — 2012-11-07T21:24:34Z

What type of energy is involved in each of the following situations?

a) Wood is burning in the fire.

b) A radio station is broadcasting its usual program. Waves are coming out of its antenna.

c) A mobile phone is playing music.

a) Internal energy is converted into heat energy.

b) Electromagnetic energy is converted into acoustic energy.

c) Chemical energy is converted into electrical energy.

Definition of energy (1928)

F_y_Q — 2012-11-07T21:24:29Z

Define, with your own words, what energy is. Explain three different types of energy.

Energy is the ability of a system to cause changes in other systems or in itself.

a) Kinetic energy. The energy possessed by an object due to its motion.

b) Potential energy. The energy sotred in an object due to its position or state.

c) Thermal energy. The energy that comes from the temperature of an object, which is the total kinetic energy of its particules.