Secondary 1 Geography Practice Paper 2

TuitionGoWhere Practice Paper - Geography Secondary 1

Answer Key and Marking Scheme

Version 2 - Map Graph Data Skills Practice

Section A: Map Skills [20 marks]

Question 1 [1 mark]

Answer: 2563 Marking: Accept exact 4-figure grid reference only. Deduct 1 mark for incorrect format or reversed coordinates.

Question 2 [1 mark]

Answer: 10 metres / 10m Marking: Accept "10 metres", "10m", or "10". Do not accept other units.

Question 3 [2 marks]

Answer: 254625 (or similar 6-figure reference depending on exact position) Marking: 2 marks for correct 6-figure reference. 1 mark if 4-figure reference given instead. 0 marks for completely incorrect reference.

Question 4 [2 marks]

Answer: Location: Mount Imbiah / Central hill area Height: 110m / 110 metres above sea level Marking: 1 mark for correct location identification, 1 mark for correct height. Accept height within ±5m range.

Question 5 [3 marks]

Sample Answer: The area shows hilly terrain with contour lines forming concentric circles indicating hills. The contour lines are closely spaced on the eastern slopes showing steep gradients. The highest point reaches approximately 80m with gentler slopes on the western side where contour lines are more widely spaced. Marking:

• 1 mark for identifying hilly/elevated terrain
• 1 mark for describing slope characteristics (steep/gentle areas)
• 1 mark for using evidence from contour line spacing or height values

Question 6 [2 marks]

Sample Answer: Working: Measure distance on map = 3.2cm Map scale = 1:25,000 Actual distance = 3.2 × 25,000 = 80,000cm = 800m Answer: 800 metres Marking: 1 mark for correct method/working, 1 mark for correct final answer in metres.

Question 7 [3 marks]

Sample Answer: Route: From ferry terminal, follow the main road eastward, then turn south toward Fort Siloso via the coastal road. Explanation: This route uses established roads shown on the map, avoids steep terrain indicated by closely spaced contour lines, and provides the most direct path while staying on accessible routes for pedestrians. Marking:

• 1 mark for logical route description
• 2 marks for explanation using map evidence (roads, terrain, accessibility)

Question 8 [6 marks]

Sample Answer: Northern part: Dominated by recreational and tourist facilities including beaches, resorts, and entertainment areas. Shows more developed infrastructure with roads and buildings concentrated along the coastline.

Southern part: Contains more natural areas and historical sites like Fort Siloso. Less dense development with more forested areas shown by vegetation symbols. Includes conservation areas and nature trails.

Evidence: Map symbols show hotel/resort icons in the north, fort symbols in the south, different vegetation patterns, and varying density of built structures between the two areas. Marking:

• 2 marks for describing northern land use patterns
• 2 marks for describing southern land use patterns
• 2 marks for providing specific map evidence (symbols, features, patterns)

Section B: Data Interpretation [15 marks]

Question 9 [3 marks]

Sample Answer: Singapore's daily water consumption per person decreased steadily from approximately 165 litres in 2010 to 143 litres in 2020. This represents a consistent downward trend of about 22 litres per person over the 10-year period, showing successful water conservation efforts. Marking:

• 1 mark for identifying decreasing trend
• 1 mark for using specific data values
• 1 mark for quantifying the change or explaining significance

Question 10 [4 marks]

Sample Answer: Marina Bay: Lower water quality with pH of 6.8 (slightly acidic), lower dissolved oxygen at 4.2 mg/L, higher turbidity at 15.6 NTU, and higher temperature at 28.5°C.

Sungei Buloh: Better water quality with pH of 7.2 (closer to neutral), higher dissolved oxygen at 6.8 mg/L, lower turbidity at 8.3 NTU, and cooler temperature at 26.2°C.

Comparison: Sungei Buloh shows healthier water conditions across all parameters, likely due to less urban pollution and better natural filtration from mangrove vegetation. Marking:

• 1 mark for Marina Bay description with data
• 1 mark for Sungei Buloh description with data
• 1 mark for comparison statement
• 1 mark for explanation of differences

Question 11 [4 marks]

(a) Answer: 2:00 PM [1 mark]

(b) Working: 33.1°C - 24.5°C = 8.6°C Answer: 8.6°C [1 mark for correct calculation]

(c) Sample Answer: Temperature increases from morning to afternoon as solar radiation heats the ground and air throughout the day. The peak occurs in early afternoon when solar energy is most intense, then decreases as the sun's angle lowers and heating reduces. Marking: 2 marks for explaining solar heating cycle and timing of peak temperatures.

Question 12 [4 marks]

Sample Answer: Reason 1: Forested areas have more evapotranspiration from trees, which adds moisture to the air and increases local humidity, leading to more rainfall formation.

Reason 2: Urban areas have more concrete and buildings that create heat islands, causing air to rise rapidly and disperse moisture before it can condense into rainfall, while forests provide cooler conditions that encourage condensation. Marking: 2 marks per reason for clear explanation linking forest/urban characteristics to rainfall differences.

Section C: Geographical Investigation and Analysis [15 marks]

Question 13 [6 marks]

(a) Sample Answers: [3 marks - 1 mark each] Data type 1: pH levels (acidity/alkalinity) Data type 2: Dissolved oxygen concentration Data type 3: Turbidity (water clarity/suspended particles) Accept also: Temperature, nitrate levels, phosphate levels, bacterial count, flow rate

(b) Sample Answer: Collecting data at three different locations allows students to identify patterns and changes in water quality along the river's course. The upstream site provides baseline natural conditions, the middle section shows urban impact effects, and the downstream location reveals cumulative pollution effects. This spatial comparison helps understand how human activities affect water quality and identifies pollution sources. Marking: 3 marks for explaining spatial comparison benefits and pollution source identification.

Question 14 [4 marks]

(a) Sample Answer: The graph shows a negative relationship where temperature decreases steadily as distance from the city center increases. Temperature drops from 32°C in the center to 28°C at 15km away, showing a consistent cooling trend with distance. Marking: 2 marks for describing the negative relationship and using data evidence.

(b) Sample Answer: Urban areas create heat islands due to concrete and asphalt absorbing and retaining heat, plus heat generation from vehicles, air conditioning, and industrial activities. Rural areas have more vegetation which provides cooling through shade and evapotranspiration. Marking: 2 marks for explaining urban heat island effect or rural cooling factors.

Question 15 [5 marks]

(a) Sample Answers: [2 marks - 1 mark each] Equipment 1: Pencil and paper/field notebook Equipment 2: Measuring tape/ruler for scale Accept also: Clipboard, eraser, compass for direction, camera for reference

(b) Sample Answer: Different mangrove species are adapted to varying levels of salt tolerance and tidal exposure. Species closest to the sea can tolerate higher salinity and longer submersion periods, while inland species prefer lower salt concentrations and less frequent flooding. This creates natural zonation where each species occupies its optimal environmental niche based on salt tolerance and water exposure requirements. Marking: 3 marks for explaining adaptation to salinity gradients and tidal exposure differences creating zonation patterns.

Overall Marking Guidelines

Grade Boundaries (Suggested):

• A: 45-50 marks (90-100%)
• B: 40-44 marks (80-89%)
• C: 35-39 marks (70-79%)
• D: 30-34 marks (60-69%)
• E: 25-29 marks (50-59%)
• F: Below 25 marks (<50%)

General Marking Principles:

• Award marks for correct geographical terminology
• Accept alternative valid answers not listed in marking scheme
• Partial credit for incomplete but correct responses
• Deduct marks for unclear or illegible responses
• Encourage use of data evidence in explanations