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Energy is the indirectly observed quantity that has power to cause a change in a system. We do not observe energy directly - we only observe the effects that it has on systems as they change.
According to the first law of thermodynamics, the energy of an isolated system (one where no mass or energy are entering or leaving) must remain constant.
Energy never disappears it just forms into another type of energy
What else can I help you with?
What best describes mechanical energy?
combined potential and kinetic energy (:mass and velocity
Which describes the energy conversions used to make a car down the street?
Assuming it just rolls down a slope, without the engines working: gravitational potential energy will be converted to kinetic energy. The kinetic energy will eventually be converted to heat energy.
Kinetic energy is the energy of?
Motion.
Energy in the form of motion?
The energy of motion is called kinetic energy.
What are the two main forms of energy?
The two main forms of energy are Kinetic energy and Potential Energy. Kinetic energy is motion energy. Potential energy is energy stored in matter.
What best describes temperature of substance?
average kinetic energy
Which best describes the energy conversion that happens when hydroelectric power plants are used to make electricity?
Kinetic energy to electrical energy
Which choice best describes kinetic energy?
Kinetic energy is the energy possessed by an object due to its motion. It is directly proportional to the mass of the object and the square of its velocity.
Which best describes the energy conversation that happens when windmills are used to make electricity?
Kinetic energy to electrical energy
What best describes the motion on iron atoms in solid iron?
Kinetic energy best describes the motion of the particles in a piece of steel.
What best describes mechanical energy?
combined potential and kinetic energy (:mass and velocity
Which term best describes the measure of the energy of motion of particles in matter?
The term that best describes the measure of the energy of motion of particles in matter is temperature. Temperature is a physical quantity that relates to the average kinetic energy of particles within a substance.
Which best describes how thermal energy is produced?
Thermal energy is produced when the kinetic energy of particles in a material increases due to an increase in temperature. This increase in kinetic energy causes the particles to vibrate and move faster, generating heat energy in the process.
Mechanical energy describes what energy?
combined potential and kinetic energy (:mass and velocity
What KE describes the way energy is stored in a moving cricket bat?
The kinetic energy of a moving cricket bat describes the energy it possesses due to its motion. This energy is stored in the bat as it swings and strikes the cricket ball, transferring the kinetic energy to the ball upon impact.
What is the adjective meaning active or in motion type of energy?
The adjective you are looking for is "kinetic." It describes energy associated with an object in motion.
What term describes the average kinetic energy of a system?
Temperature.
