Exam (elaborations)
NST1502 Assignment 4 PORTFOLIO 2024 - DUE 8 October 2024
- Course
- NST1502 (NST1502)
- Institution
- University Of South Africa (Unisa)
NST1502 Assignment 4 PORTFOLIO 2024 - DUE 8 October 2024 QUESTIONS WITH DETAILED ANSWERS
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NST1502 Assignment 4PORTFOLIO 2024 - DUE 8
October 2024
QUESTIONS WITH ANSWERS
, NST1502 Assignment 4 PORTFOLIO 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
1. Kinetic Energy
Kinetic energy is the energy an object possesses due to its motion. The
amount of kinetic energy depends on both the mass and velocity of the
object.
• Example: A moving car has kinetic energy. The faster it goes and the
heavier it is, the more kinetic energy it has.
2. Potential Energy
Potential energy is the energy stored in an object due to its position,
condition, or composition. The most common type is gravitational potential
energy, which depends on the object's height and mass.
• Example: A book on a shelf has gravitational potential energy
because it can fall to the ground due to gravity.
3. Thermal Energy
Thermal energy, or heat energy, is the energy that comes from the
movement of particles in an object. The more the particles move, the higher
the object's thermal energy.
• Example: Boiling water on a stove has thermal energy because the
heat from the stove makes the water molecules move faster.
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