Exam (elaborations)
NST1502 Assignment 4 PORTFOLIO (COMPLETE ANSWERS) 2024 - DUE 8 October 2024
- Course
- NST1502
- Institution
- University Of South Africa
TRUSTED WORKINGS, EXPLANATIONS AND SOLUTIONS
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NST1502 Assignment 4[Date]
PORTFOLIO
(COMPLETE
ANSWERS) 2024 - DUE
8 October 2024
, NST1502 Assignment 4 PORTFOLIO (COMPLETE
ANSWERS) 2024 - DUE 8 October 2024
QUESTION 1 Energy Basics [18 marks] 1.1 Define and explain
the different forms of energy, providing real-world examples for
each. (Focus on the following forms of energy; Kinetic energy;
potential energy; thermal energy; chemical energy; electrical
energy, light energy, and sound energy). (14) 1.2 Discuss the
concept of energy transformation, giving examples of how one
form of energy can be converted into another. (4)
1.1 Forms of Energy
Energy exists in various forms and can be converted from one type to another. Each form plays a
crucial role in different processes in the real world. Here are the main forms of energy:
1. Kinetic Energy:
o Definition: Kinetic energy is the energy possessed by an object due to its motion.
Any object in motion has kinetic energy.
o Example: A car moving at high speed or a running athlete possesses kinetic
energy. The faster the object moves, the more kinetic energy it has.
2. Potential Energy:
o Definition: Potential energy is the stored energy in an object due to its position or
arrangement. It depends on the object's height, mass, or internal structure.
o Example: A book held above the ground has gravitational potential energy, and a
compressed spring has elastic potential energy.
3. Thermal (Heat) Energy:
o Definition: Thermal energy is the internal energy of a system due to the random
motion of its particles. It is often associated with temperature.
o Example: Boiling water on a stove increases its thermal energy, or the warmth
you feel from sunlight is thermal energy transferred from the sun.
4. Chemical Energy:
o Definition: Chemical energy is the energy stored in the bonds of chemical
compounds. It is released or absorbed during chemical reactions.
o Example: Batteries store chemical energy, which is converted to electrical energy
when used. Similarly, food contains chemical energy, which is released when
metabolized by the body.
5. Electrical Energy:
o Definition: Electrical energy is the energy created by the movement of electrons
through a conductor.
o Example: The electricity that powers household appliances like televisions and
computers is a form of electrical energy.
6. Light (Radiant) Energy:
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