NST1502
ASSIGNMENT 4 (PORTFOLIO)..
DUE DATE: 8 October 2024..
PREVIEW:
QUESTION 1: Energy Basics [18 Marks]
1.1 Define and explain the different forms of energy, providing real-world examples for each. (14)
• Kinetic Energy: Kinetic energy is the energy of motion, the force that allows objects to move from
one point to another. It’s the reason a car speeds down the highway, a thrown ball flies through
the air, and rivers flow. The more mass and velocity an object has, the more kinetic energy it
contains. For example, a moving car or a cyclist speeding down a hill both possess kinetic energy.
• Potential Energy: Potential energy is stored energy, held by an object due to its position, state, or
condition. This type of energy has the potential to do work when released. For instance, a boulder
perched at the top of a hill has gravitational potential energy, which will convert to kinetic energy
if it starts rolling down.
• Thermal Energy: Thermal energy, often called heat energy, comes from the vibration of molecules
within a substance. The hotter an object, the faster its molecules move, and the more thermal
energy it contains. An example would be boiling water on a stove where the heat from the stove
increases the water's thermal energy.
• Chemical Energy: Chemical energy is stored in the bonds between atoms in a molecule. When
these bonds are broken through a chemical reaction, the energy is released. A classic example is a
battery powering your phone—inside, stored chemical energy is transformed into electrical energy
to keep your device running.
• Electrical Energy: Electrical energy is derived from the movement of electric charges. It’s the
energy we use daily to power our homes, gadgets, and machines. Flipping a light switch or
charging a phone are common uses of electrical energy.
Disclaimer:
• materials
The Light Energy: Light
provided areenergy,
intended orfor
radiant energy,and
educational is energy that travels
informational in waves
purposes andshould
only. They can move
not be
through
submitted a vacuum.
as original workItorisused
a form of electromagnetic
in violation radiation.
of any academic Sunlight
institution's thatThe
policies. powers
buyersolar panels or
is solely
the light
responsible forfrom yourmaterials
how the lamp atare home
used.are practical examples.
• Sound Energy: Sound energy results from the vibration of particles in a medium (air, water, etc.).
It’s what you hear every day—music, conversation, or the roar of an engine. For example, when a
guitar string vibrates, it produces sound energy that travels to your ears.
ASSIGNMENT 4 (PORTFOLIO)..
DUE DATE: 8 October 2024..
PREVIEW:
QUESTION 1: Energy Basics [18 Marks]
1.1 Define and explain the different forms of energy, providing real-world examples for each. (14)
• Kinetic Energy: Kinetic energy is the energy of motion, the force that allows objects to move from
one point to another. It’s the reason a car speeds down the highway, a thrown ball flies through
the air, and rivers flow. The more mass and velocity an object has, the more kinetic energy it
contains. For example, a moving car or a cyclist speeding down a hill both possess kinetic energy.
• Potential Energy: Potential energy is stored energy, held by an object due to its position, state, or
condition. This type of energy has the potential to do work when released. For instance, a boulder
perched at the top of a hill has gravitational potential energy, which will convert to kinetic energy
if it starts rolling down.
• Thermal Energy: Thermal energy, often called heat energy, comes from the vibration of molecules
within a substance. The hotter an object, the faster its molecules move, and the more thermal
energy it contains. An example would be boiling water on a stove where the heat from the stove
increases the water's thermal energy.
• Chemical Energy: Chemical energy is stored in the bonds between atoms in a molecule. When
these bonds are broken through a chemical reaction, the energy is released. A classic example is a
battery powering your phone—inside, stored chemical energy is transformed into electrical energy
to keep your device running.
• Electrical Energy: Electrical energy is derived from the movement of electric charges. It’s the
energy we use daily to power our homes, gadgets, and machines. Flipping a light switch or
charging a phone are common uses of electrical energy.
Disclaimer:
• materials
The Light Energy: Light
provided areenergy,
intended orfor
radiant energy,and
educational is energy that travels
informational in waves
purposes andshould
only. They can move
not be
through
submitted a vacuum.
as original workItorisused
a form of electromagnetic
in violation radiation.
of any academic Sunlight
institution's thatThe
policies. powers
buyersolar panels or
is solely
the light
responsible forfrom yourmaterials
how the lamp atare home
used.are practical examples.
• Sound Energy: Sound energy results from the vibration of particles in a medium (air, water, etc.).
It’s what you hear every day—music, conversation, or the roar of an engine. For example, when a
guitar string vibrates, it produces sound energy that travels to your ears.
