Exam (elaborations)
PSC1501 ASSIGNMENT 5 2023 S2
- Course
- PSC1501 (PSC1501)
- Institution
- University Of South Africa (Unisa)
PSC1501 ASSIGNMENT 5 2023 S2
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PSC1501 S2ASSIGNMNET 5
OCTOBER 2, 2023
PSC1501
2023
, QUESTION 1
1.1 The Big Ideas of Science refer to the fundamental concepts and
principles that explain how the natural world works. These ideas form the
basis of scientific understanding and are essential in explaining various
phenomena. Some examples of Big Ideas in Science include:
- Evolution: the process of genetic change over time that leads to the
development of new species.
- Energy: the ability to do work or cause change.
- Atomic structure: the arrangement and behavior of atoms, which are the
building blocks of matter.
- Genetics: the study of heredity and how traits are inherited from one
generation to the next.
- Earth and space: the interactions and dynamics of Earth, its resources,
and the universe.
1.2 The general form of practical activities includes several steps to ensure
the successful completion of the experiments or investigations. These
steps are as follows:
1) Purpose/Question: Clearly define the purpose or question that the
practical activity aims to address. For example, "How does the
concentration of a solution affect the rate of a chemical reaction?"
2) Hypothesis: Make an educated guess or prediction about the outcome of
the practical activity. For example, "I predict that as the concentration of the
solution increases, the rate of the chemical reaction will also increase."
3) Materials: List all the materials and equipment needed to conduct the
practical activity. For example, beakers, measuring cylinders, solutions of
different concentrations, etc.
4) Procedure: Outline the step-by-step instructions on how to carry out the
practical activity. This should include specific measurements, mixing
procedures, and safety precautions. For example, "Measure 50 ml of
Solution A and pour it into a clean beaker. Add 10 ml of Solution B to the
beaker and start the stopwatch."
5) Data collection: Record all observations, measurements, and data
obtained during the practical activity. For example, record the time it takes
for a color change to occur in the solution at different concentrations.
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