Marine Sciences Memo 1 (English)

November 2023 — Grade 12 / Matric — Marine Sciences

Memo 2023 Grade 12 English

↓ Download PDF 📄 559.3 KB View Exam Paper

Preparing document

📋 Document Analysis

🎯 150 marks 📄 17 pages 📝 37 items found 📚 3 topics

See full analysis

Questions — A Preview of What to Expect in the Document

This section provides a quick preview of questions from the document. It may not display every question or the complete wording of each one. For the full content, including diagrams, tables and other information, view the original PDF above.

Q1— Section header —

1.2.1Culture media / Agar (plates\

1.2.2Hatcheries

1.2.3Albedo

1.2.4Interglacial periods

1.2.5Calcifiers

1.2.6Zenolith Xenolit

1.2.7Ekman transpo rt /Ekman spiral

1.2.8Spit

1.2.9Headland

1.2.10Eddies (10 x 1\ (10\

1.3.5Both A and B only None only None (10\ [40]40

Q2— Section header —

2.1.1Average volume of hydrogen captured / rate of hydrogen production (1\

2.1.2As the salinity increased the (average\ volume of hydrogen production captured increased. Both variables present 1 mark Direction of predictio

2.1.3MARKING GUIDELINES CRITERIA MARK ALLOCATED Appropriately descriptive heading, above or below the graph (

2.1.5water molecule is composed of two hydrogen atoms and one oxygen atom. The atoms are covalently bonded / hydrogen atoms shares

2.1.6More hydrogen pr oduced with sea water than fresh water Sea water is abundant (about 70 % of earth is covered by sea water\

2.1.7If answer is YES For the amount of sea water used you will get a large volume of hydrogen captured Less greenhouse gasses will be released into the atmosphere

2.1.4reater / higher / increase in salinity will lead to a greater higher

2.2.1Spilling wave (1\

2.2.2The photograph / satellite image indicates a set of spilling waves illustrated by the large amounts of foam. OR The side view shows that t he area has a gradual gradient.

2.2.3(A s a wav e approaches the shore\ the bottom part of the wave will be in contact with the sea floor resulting in friction / refraction occurring

2.2.4(a\ Rip current (1\ (b\ 1. Waves accumulating on the shore 2. Result ing

2.2.5= 1 bar = 500 m / 0.5

0.5(2.1 bar\ substitution\ = 238 ,10 OR

0.24for correct answer and unit\ (4\

2.2.6(a\ Causes This is also called decompression sickness. Nitrogen build up in the tissue

Q3— Section header —

3.1.1Abundance of sediment Onshore w ind Low lying area to which sediment can be blown

3.1.2(a\ 1. Surface creep the movement of sand along the ground 2. Suspension

3.1.3(a\ Soft engineering (1\ (b\ Reinstating dune profile with bulldozing Wind nets

3.1.4If answer is GOOD It will allow the buildings / human built features to be protected from deteriorating If answer is POOR Humans should not interfere with nature as it might result in disturbing the ecological balance

3.3.3.1 (a\ Walker circulation Walker cell (1\

3.3.21.The SE trade winds weaken pushing cooler surface water towards the western Pacific and causing less we akened

3.3(a\ Water temperature will decrease (1\ (b\ Increase in rainfall

Q4— Section header —

Topics Identified

Cell BiologyGeneticsEcology

Mark Allocation

Total150 marks

Sections40 + 40 + 35 = 115 marks

Paper information

SubjectMarine Sciences

Year2023

SessionNovember

TypeMemo

PaperPaper 1

LanguageEnglish

Pages18

Downloads4

Examination context

Decade2020s

Years ago3y

SeasonSpring (SH)

Start daySunday

Exam periodNovember 2023

Days since exam1,084

About Marine Sciences examination preparation

This Grade 12 examination resource can be used as part of a structured revision programme. Past papers are most useful when learners attempt questions independently, work within a realistic time limit, and review their answers afterwards.

How to use this resource for revision

A past examination paper is most useful when it is treated as an active revision exercise. Try the questions yourself before checking the corresponding memorandum. Where you make an error, identify the reason — was it a knowledge gap, a calculation mistake, an interpretation issue, or an examination technique problem?

For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.

understanding question requirements

applying subject knowledge

working under time constraints

checking answers

identifying revision priorities

A practical revision approach

Start by completing the resource without looking at the memorandum. Review incorrect and incomplete answers afterwards and make a short revision list based on the areas that caused difficulty.

Grade 12 subject hubs

Each matric subject has its own dedicated hub on Freemode with every past paper and marking memorandum we have archived for that subject.

➗ Mathematics View papers → 📊 Mathematical Literacy View papers → ⚗️ Physical Sciences View papers → 🧬 Life Sciences View papers → 📒 Accounting View papers → 💼 Business Studies View papers → 📈 Economics View papers → 🌍 Geography View papers → 🏛️ History View papers → 📖 English View papers → 🇿🇦 Afrikaans View papers → 🗣️ IsiNdebele View papers → 🗣️ IsiXhosa View papers → 🗣️ IsiZulu View papers → 🗣️ Sepedi View papers → 🗣️ Sesotho View papers → 🗣️ Setswana View papers → 🌾 Agricultural Sciences View papers →

Corresponding examination paper

Examination paper available

Open the corresponding examination paper to practise the questions before reviewing the marking memorandum on this page. Attempt every question under timed conditions for the most realistic preparation.

Marine Sciences Paper 1 (English) →

File details

File size559.3 KB

Pages18

Archived on7 September 2026

File age46d

ContributorFreeMode

Fingerprint8B26F87648F2

Questions and learner discussion

No questions or discussions have been posted yet.