NST1502 Assignment 4 PORTFOLIO (COMPLETE ANSWERS) 2024 - DUE 8 October 2024
NST1502 Assignment 4 PORTFOLIO (COMPLETE ANSWERS) 2024 - DUE 8 October 2024 ; 100% TRUSTED Complete, trusted solutions and explanations.
NST1502 Assignment 4 PORTFOLIO (COMPLETE ANSWERS) 2024 - DUE 8 October 2024 ; 100% TRUSTED Complete, trusted solutions and explanations
All for this textbook (5)
Written for
University of South Africa
Natural Science and Technology for classroom II
All documents for this subject (10)
Seller
Follow
MasterVincent
Reviews received
Content preview
,NST1502 Assignment 4 PORTFOLIO (COMPLETE
ANSWERS) 2024 - DUE 8 October 2024 ; 100% TRUSTED
Complete, trusted solutions and explanations.
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) QUESTION 2
Renewable and Non-Renewable Energy Sources [18 Marks] 2.1
Compare renewable and non-renewable energy sources in terms
of availability, environmental impact, and sustainability. (6) 2.2
Provide three examples of renewable and non-renewable energy
sources. (6) 2.3 Discuss three environmental impacts of
renewable and non-renewable energy sources. (6) 4
Energy Basics and Energy Sources
QUESTION 1: Energy Basics [18 marks]
1.1 Different Forms of Energy (14 marks)
Energy exists in various forms, each with distinct characteristics
and real-world applications. Below are explanations of the
different forms of energy, along with examples for each.
1. Kinetic Energy:
o Definition: Kinetic energy is the energy an object
possesses due to its motion. The amount of kinetic
, energy an object has depends on its mass and velocity,
and it can be calculated using the formula
KE=12mv2KE = \frac{1}{2} mv^2KE=21mv2, where
mmm is mass and vvv is velocity.
o Example: A moving car has kinetic energy; the faster
the car moves and the heavier it is, the more kinetic
energy it possesses. A child riding a bicycle also
demonstrates kinetic energy.
2. Potential Energy:
o Definition: Potential energy is the stored energy an
object possesses due to its position or configuration. It
can take various forms, such as gravitational potential
energy, elastic potential energy, and chemical
potential energy.
o Example: A rock perched at the top of a hill has
gravitational potential energy due to its height. A
compressed spring in a toy also stores elastic potential
energy.
3. Thermal Energy:
o Definition: Thermal energy, or heat energy, is the
energy that comes from the temperature of matter. It
arises from the movement of particles within a
substance and is transferred as heat.
o Example: Boiling water on a stove has thermal
energy. The heat emitted by a fireplace or a hot cup of
coffee is another example of thermal energy.
4. Chemical Energy:
o Definition: Chemical energy is the energy stored in
the bonds of chemical compounds. It is released or
absorbed during a chemical reaction, resulting in the
transformation of substances.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MasterVincent. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $2.58. You're not tied to anything after your purchase.
