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Question 1Physical Geography
Which layer of the atmosphere contains the ozone layer that absorbs most ultraviolet radiation?
- Stratosphere Correct answer.
- Mesosphere
- Troposphere
- Thermosphere
Explanation
Ozone is concentrated in the stratosphere, roughly 15 to 35 km above the surface, where it absorbs harmful ultraviolet radiation. This absorption also warms the stratosphere and creates a temperature inversion that stabilises the layer.
Question 2Physical Geography
A rock that forms from the cooling and solidification of molten magma beneath the surface is best described as which type?
- Extrusive igneous
- Sedimentary
- Metamorphic
- Intrusive igneous Correct answer.
Explanation
Intrusive igneous rocks crystallise slowly from magma trapped underground, producing large interlocking crystals such as granite. Extrusive rocks cool rapidly at the surface and are fine-grained instead.
Question 3Physical Geography
Which process in the hydrological cycle converts water vapour directly into liquid droplets?
- Infiltration
- Evaporation
- Condensation Correct answer.
- Transpiration
Explanation
Condensation is the change of state from vapour to liquid, and it occurs when air cools to its dew point, forming cloud droplets and dew. Evaporation is the reverse process, while infiltration and transpiration move water in other ways.
Question 4Physical Geography
The boundary where two tectonic plates slide horizontally past each other is called a:
- Divergent boundary
- Subduction zone
- Convergent boundary
- Transform boundary Correct answer.
Explanation
At a transform boundary plates move laterally past one another, producing strike-slip faults and shallow earthquakes but little volcanism. Convergent and divergent boundaries involve plates moving toward or away from each other.
Question 5Physical Geography
Which soil horizon is typically the surface layer richest in organic matter and dark in colour?
- B horizon
- R horizon
- O horizon Correct answer.
- C horizon
Explanation
The O horizon is the uppermost organic layer of decomposing litter and humus, giving it a dark colour and high organic content. The B, C and R horizons lie progressively deeper and contain less organic material.
Question 6Physical Geography
A wind blowing onshore from the sea during the day in a coastal area is best explained by which pressure difference?
- Lower pressure over the sea
- Lower pressure over the heated land Correct answer.
- Equal pressure over land and sea
- Higher pressure over the heated land
Explanation
Land heats faster than water, so air over the land rises and creates relatively low pressure, drawing cooler air inland as a sea breeze. The pressure gradient drives the onshore flow.
Question 7Physical Geography
In the rock cycle, which process turns loose sediment into solid sedimentary rock?
- Metamorphism
- Weathering
- Melting
- Lithification Correct answer.
Explanation
Lithification is the compaction and cementation of sediment into solid rock. Weathering breaks rock down, melting produces magma, and metamorphism alters rock under heat and pressure.
Question 8Physical Geography
Which term describes the proportion of pore space in a rock or soil that can hold water?
- Porosity Correct answer.
- Field capacity
- Permeability
- Infiltration capacity
Explanation
Porosity is the fraction of total volume made up of voids, determining how much water a material can store. Permeability instead describes how easily water flows through the material.
Question 9Physical Geography
The Coriolis effect deflects moving air in the Northern Hemisphere toward which direction?
- Directly downward toward the surface
- To the right of its path Correct answer.
- To the left of its path
- Straight ahead with no deflection
Explanation
Because of Earth's rotation, air moving in the Northern Hemisphere is deflected to the right of its direction of travel. In the Southern Hemisphere the deflection is to the left.
Question 10Physical Geography
Which type of plate margin is most closely associated with the formation of a deep ocean trench and an island arc?
- Oceanic-oceanic convergent Correct answer.
- Transform
- Continental-continental convergent
- Divergent
Explanation
Where two oceanic plates converge, one subducts beneath the other, creating a deep trench and generating magma that builds an island arc. Continental collision instead produces fold mountains without a trench.
Question 11Physical Geography
A river's discharge increases sharply and its hydrograph shows a short lag time after heavy rainfall. Which catchment characteristic most likely explains this?
- Extensive lake storage upstream
- Dense forest cover on flat land
- Highly permeable rock with gentle slopes
- Impermeable rock with steep slopes Correct answer.
Explanation
Impermeable rock and steep slopes allow rapid surface runoff, so water reaches the channel quickly and the lag time is short with a high peak. Permeable rock, gentle slopes, vegetation and lakes all delay runoff.
Question 12Physical Geography
Which weathering process is most characteristic of a cold, wet climate acting on jointed limestone?
- Exfoliation by insolation
- Salt crystallisation
- Freeze-thaw action Correct answer.
- Chemical solution
Explanation
In cold, wet climates water enters joints and freezes, expanding and prising the rock apart in repeated freeze-thaw cycles. Salt crystallisation and insolation exfoliation dominate in hot, dry settings.
Question 13Physical Geography
What is the main reason why a soil on a steep slope tends to be thinner than one on flat land?
- Chemical weathering cannot occur
- Erosion removes soil faster than it forms Correct answer.
- Parent material is always impermeable
- Organic input is completely absent
Explanation
On steep slopes gravity-driven erosion and runoff carry soil downslope faster than weathering can create new soil, keeping the profile thin. Organic matter and weathering still occur but cannot accumulate.
Question 14Physical Geography
A warm front is approaching a weather station. Which sequence of weather is most typical as it passes?
- Sudden violent thunderstorms followed by rapid clearing
- Clear skies with falling temperature and no cloud
- Increasing cloud with high cirrus, then steady rain, then clearing Correct answer.
- Brief heavy hail followed by strong gusty winds
Explanation
A warm front has a gentle slope, so high cirrus cloud arrives first, thickening to altostratus and nimbostratus with prolonged steady rain, then clearing as the front passes. Violent short-lived storms are characteristic of cold fronts.
Question 15Physical Geography
In a meandering river, where does deposition occur most actively?
- On the outer bank of a bend
- On the inner bank of a bend Correct answer.
- At the point of maximum current velocity
- Along the deepest part of the channel
Explanation
Flow is slowest on the inner bank of a meander, so competence falls and sediment is deposited, building a point bar. The outer bank experiences faster flow and erosion.
Question 16Physical Geography
Which factor most strongly increases the amplitude of a storm surge along a coastline?
- A deep, straight coastline
- A wide continental shelf break
- Offshore winds
- A shallow, funnel-shaped estuary Correct answer.
Explanation
A shallow, funnel-shaped estuary concentrates and stacks the surge water, raising its height considerably. Deep open coasts and offshore winds reduce surge height.
Question 17Physical Geography
Which atmospheric condition is required for a tropical cyclone to form?
- Strong vertical wind shear
- High latitude and cold ocean water
- Descending dry air over the centre
- Sea surface temperatures above about 26°C Correct answer.
Explanation
Tropical cyclones need warm ocean water above roughly 26°C to supply latent heat and moisture. Strong wind shear and cold water disrupt their development.
Question 18Physical Geography
A cliff of hard rock with a vertical face and a narrow wave-cut platform most likely indicates which situation?
- Low wave energy acting on soft rock
- High wave energy acting on resistant rock Correct answer.
- A recently submerged coastline
- A sheltered estuary with mudflats
Explanation
Resistant rock erodes slowly, producing a steep, high cliff, while strong wave energy removes debris so a narrow platform forms. Soft rock and low energy produce gentler, lower profiles.
Question 19Physical Geography
Which process transfers heat energy through a fluid by the movement of the fluid itself?
- Reflection
- Convection Correct answer.
- Radiation
- Conduction
Explanation
Convection moves heat by the bulk circulation of a fluid, such as rising warm air or magma. Conduction transfers heat through direct contact in solids, and radiation needs no medium.
Question 20Physical Geography
The term 'mass movement' refers to:
- Downslope transfer of material under gravity Correct answer.
- Vertical uplift of the crust
- Transport of sediment by wind
- Chemical dissolution of bedrock
Explanation
Mass movement is the gravity-driven downslope movement of soil and rock, ranging from slow creep to rapid landslides. Wind transport and chemical dissolution are separate processes.
Question 21Physical Geography
Which combination best explains the formation of a rain shadow desert on the leeward side of a mountain range?
- Convergence of trade winds at the equator
- Orographic uplift and cooling on the windward side, then warming and drying as air descends Correct answer.
- Descending polar air at high latitudes
- Cold offshore currents cooling the land
Explanation
Moist air is forced to rise on the windward slope, cooling and releasing precipitation; as it descends the leeward side it warms and its relative humidity falls, creating arid conditions. This is the rain shadow effect.
Question 22Physical Geography
A river draining a catchment underlain by chalk is likely to have which characteristic?
- Rapid surface runoff after storms
- A steady flow sustained by groundwater Correct answer.
- Very high sediment load
- A flashy hydrograph with a high peak
Explanation
Chalk is highly permeable, so rainfall infiltrates and is stored, then released slowly to the river to give a steady baseflow. Surface runoff and flashy peaks are typical of impermeable catchments.
Question 23Physical Geography
Which sequence correctly orders the development of an erosional coastal feature from a notch to a stump?
- Notch, arch, cave, stump, stack
- Cave, notch, stack, arch, stump
- Notch, cave, arch, stack, stump Correct answer.
- Arch, notch, cave, stack, stump
Explanation
Wave erosion first cuts a notch at the cliff base, which enlarges into a cave; when caves on both sides of a headland join they form an arch, whose collapse leaves a stack that erodes to a stump. The order reflects progressive removal of rock.
Question 24Physical Geography
Two catchments of equal area receive the same rainfall, but one has a much higher peak discharge. Which explanation is most consistent with hydrological principles?
- It has greater infiltration capacity
- It has a higher drainage density and shorter overland flow paths Correct answer.
- It has larger surface storage in lakes
- It has more permeable bedrock
Explanation
High drainage density means water reaches channels quickly via short flow paths, producing a rapid, high peak. Greater infiltration, permeable rock and lake storage all reduce and delay peak discharge.
Question 25Physical Geography
Which statement best explains why subduction zones generate the deepest earthquakes?
- New crust forms and cools rapidly at a ridge
- Plates slide horizontally with little vertical movement
- Cold, dense lithosphere sinks deep and remains brittle far below the surface Correct answer.
- Hot magma rises and fractures the crust at shallow depth
Explanation
In a subduction zone the descending slab remains relatively cool and brittle to great depths, allowing faulting and earthquakes to occur far below the normal brittle zone. Divergent and transform margins produce mainly shallow seismicity.
Question 26Physical Geography
Which term describes the boundary between the saturated zone and the unsaturated zone in permeable rock?
- The spring line
- The aquifer
- The aquiclude
- The water table Correct answer.
Explanation
The water table is the upper surface of saturation, below which all pore spaces are filled with water. Its height rises and falls with recharge, which is why it is measured in boreholes rather than fixed in position.
Question 27Physical Geography
Which glacial landform is composed of unsorted material deposited directly beneath an ice sheet over a broad lowland area?
- Outwash plain
- Esker
- Kame terrace
- Till plain Correct answer.
Explanation
Till is deposited directly by ice without the sorting that flowing meltwater produces, so a till plain consists of mixed clay, sand and boulders. Outwash, kames and eskers all involve meltwater transport and are therefore sorted to some degree.
Question 28Physical Geography
Which soil horizon is characterised by the accumulation of illuviated clay, iron oxides or humus washed down from above?
- The O horizon
- The C horizon
- The A horizon
- The B horizon Correct answer.
Explanation
The B horizon is a zone of accumulation where material leached from the overlying A and E horizons is deposited. Its colour and texture often contrast sharply with the horizons above, which is why it is sometimes called the zone of illuviation.
Question 29Physical Geography
Which type of weathering breaks rock apart without changing its chemical composition?
- Freeze-thaw action Correct answer.
- Hydrolysis
- Oxidation
- Carbonation
Explanation
Freeze-thaw is a mechanical process in which water expands on freezing and prises joints apart, leaving the minerals chemically unchanged. Hydrolysis, carbonation and oxidation all alter mineral structures to produce new compounds.
Question 30Physical Geography
Which coastline is most likely to be classified as a submergent coast?
- One with a series of raised beaches above the modern shore
- One with a broad, straight beach backed by dunes
- One with an extensive wave-cut platform at low tide
- One with deeply indented rias and drowned river valleys Correct answer.
Explanation
Submergent coasts form when sea level rises or land sinks, drowning former river valleys to create rias and fjords. Raised beaches and emergent platforms record the opposite movement, uplift or falling sea level.
Question 31Physical Geography
Which process in the hydrological cycle returns water vapour from plants to the atmosphere?
- Infiltration
- Transpiration Correct answer.
- Percolation
- Interception
Explanation
Transpiration is the loss of water vapour through stomata in leaves, and together with evaporation from surfaces it is often combined as evapotranspiration. The other terms describe water moving into or onto the ground rather than into the air.
Question 32Physical Geography
Which rock type forms when magma cools slowly deep underground, producing large interlocking crystals?
- Intrusive igneous rock Correct answer.
- Metamorphic rock
- Extrusive igneous rock
- Clastic sedimentary rock
Explanation
Slow cooling at depth allows crystals time to grow large, which is characteristic of intrusive igneous rocks such as granite. Rapid cooling at the surface produces fine-grained extrusive rocks instead.
Question 33Physical Geography
Which feature forms where a river flows from a steep upland valley onto a flat plain?
- A gorge
- An incised meander
- An alluvial fan Correct answer.
- A waterfall
Explanation
When gradient falls abruptly, the river loses competence and spreads its load as a fan-shaped deposit of sorted sediment. Gorges, waterfalls and incised meanders all reflect renewed downcutting rather than sudden deposition.
Question 34Physical Geography
A mass of saturated soil moves slowly downslope as a rotational slump. Which statement best describes the movement?
- Material flows as a rapid turbulent mixture of water and debris
- Individual grains fall freely through the air before landing
- Material moves along a curved shear plane with backward rotation of the block Correct answer.
- Material creeps imperceptibly without any detectable shear surface
Explanation
A slump involves a coherent block sliding along a concave-up shear surface, so the top of the block tilts backwards into the scar. This distinguishes it from flows, falls and creep, which have different mechanisms and velocities.
Question 35Physical Geography
Why does a drainage basin with urban development usually show a higher flood peak than the same basin in rural use?
- Vegetation increases interception so less water reaches the channel
- Impermeable surfaces reduce infiltration and increase rapid surface runoff Correct answer.
- Urban soils have larger pore spaces that store more water
- Construction of storm drains slows the passage of water downstream
Explanation
Tarmac and concrete prevent water soaking in, so a larger proportion of rainfall reaches the channel quickly, raising and advancing the peak. Urban drainage also delivers water efficiently through pipes rather than delaying it.
Question 36Physical Geography
A section of coast has a prevailing wind blowing obliquely onshore and abundant shingle moving along the shore. Which process is responsible for this movement?
- Longshore drift Correct answer.
- Saltation
- Suspension
- Traction on the seabed
Explanation
Longshore drift moves sediment in a zigzag path as waves approach at an angle and return at right angles to the shore, producing net transport along the coastline. It is the process that builds spits and causes beach drift at groynes.
Question 37Physical Geography
Why do anticyclones in summer typically bring settled, warm weather over the Maltese Islands?
- Low pressure draws moist air in from the surrounding sea
- Rising air cools and condenses into extensive cumulonimbus cloud
- Descending air suppresses cloud formation and allows strong insolation Correct answer.
- Frontal systems stall over the islands and produce prolonged rain
Explanation
Subsiding air in a high-pressure system warms adiabatically and becomes relatively dry, so cloud is inhibited and sunshine is prolonged. This gives the characteristic hot, clear summer days of the central Mediterranean.
Question 38Physical Geography
Which condition would most increase the rate of chemical weathering of limestone in a humid region?
- Cold temperatures with frequent freezing and thawing
- Arid conditions with strong diurnal temperature range
- Warm temperatures and abundant rainfall supplying carbonic acid Correct answer.
- Rapid burial beneath impermeable clay
Explanation
Carbonation depends on water and carbon dioxide forming weak carbonic acid, and warm temperatures speed the reaction. Frequent freeze-thaw or aridity favours mechanical weathering, while burial reduces water access.
Question 39Physical Geography
Two rock samples are placed in water. Sample X has connected pore spaces, sample Y has isolated bubbles. Which statement is correct?
- Both are equally permeable because both contain voids
- Neither sample can store water because both contain voids
- X is porous but impermeable, while Y is permeable
- X is permeable and can transmit water, while Y is porous but not permeable Correct answer.
Explanation
Permeability depends on whether pores are connected, so a rock can be porous yet still resist flow if its voids are sealed. Sample X has connected pores and therefore transmits water, whereas Y stores water in isolated bubbles without allowing it through.
Question 40Physical Geography
Which sequence best describes the formation of a hanging valley at a glaciated coastline?
- A tributary glacier erodes less deeply than the main glacier, leaving its floor above the main trough Correct answer.
- Wave erosion cuts back the valley sides after the ice retreats
- The main glacier melts first, leaving a ridge of till across the valley
- A river cuts a gorge into the glacial deposits after deglaciation
Explanation
The main glacier erodes its bed far more deeply than its smaller tributaries, so when the ice melts the tributary floor is left suspended above the main trough. A waterfall often marks the junction where the hanging valley meets the larger valley.
Question 41Physical Geography
Why does a tropical cyclone weaken rapidly after making landfall?
- Its supply of warm ocean moisture and latent heat is cut off Correct answer.
- The Coriolis effect strengthens over land surfaces
- Friction over land accelerates the rotating winds
- Land surfaces supply more latent heat than the sea
Explanation
A tropical cyclone draws energy from evaporation over warm water, so losing that source of latent heat starves the system. Increased surface friction over land also disrupts the circulation, and both processes cause rapid decay.
Question 42Physical Geography
Which factor most directly controls the size of material that a river can transport as bedload?
- The pH of the river water
- The velocity and therefore the energy of the flow Correct answer.
- The colour of the suspended sediment
- The salinity of the river water
Explanation
The competence of a river depends on flow velocity, since faster water exerts greater force on the bed. This is why coarse gravel is moved in upland reaches during high flow and deposited when the current slackens.
Question 43Physical Geography
A cross-section shows a beach with a steep upper slope of coarse shingle and a gently sloping lower sand area. Which explanation is most consistent?
- Chemical solution has removed the sand from the upper beach
- Wind has blown all the coarse material down the beach face
- High-energy swash carries coarse material up the beach, while finer sand is removed by backwash Correct answer.
- The shingle is a storm ridge deposited by offshore currents
Explanation
Strong swash moves coarser, heavier shingle up the beach profile, while finer sand remains mobile and is carried back down by the weaker backwash. This sorting by grain size explains the contrast between the upper and lower beach.
Question 44Physical Geography
In a synoptic chart, closely spaced isobars around a low-pressure centre indicate which conditions?
- Calm conditions caused by descending air
- Persistent fog caused by temperature inversion
- Strong winds caused by a steep pressure gradient Correct answer.
- Settled weather caused by high pressure
Explanation
Isobar spacing shows the pressure gradient, and closely packed isobars mean pressure changes rapidly over distance, driving strong winds. Widely spaced isobars indicate gentle gradients and lighter winds.
Question 45Physical Geography
Which statement best explains why an aquifer confined between two impermeable layers can produce an artesian well?
- Water in the confined aquifer is under pressure and rises above the aquifer top Correct answer.
- The confining layers create a vacuum that draws water upwards
- The impermeable layers filter the water so it rises by capillary action
- The aquifer contains no water and the well fills from surface runoff
Explanation
Where a confined aquifer is recharged at higher ground, hydrostatic pressure builds within it, so a borehole may allow water to rise above the top of the aquifer without pumping. The well must reach the aquifer and the water level must be above the aquifer top.
Question 46Physical Geography
A slope consists of permeable sandstone resting on clay. After prolonged rain, a slip occurs along the boundary. Which explanation is most likely?
- The sandstone dissolves completely, removing support from the clay
- Rainwater freezes in the sandstone and lifts the whole slope
- Water seeping through the sandstone builds pore pressure on the clay, reducing friction Correct answer.
- The clay expands and pushes the sandstone upslope
Explanation
Water percolating through the permeable sandstone reaches the impermeable clay and raises pore-water pressure along the contact, which reduces effective friction and allows sliding. The clay also becomes lubricated and may weaken, promoting failure.
Question 47Physical Geography
Why does a river's long profile typically show a concave-up curve?
- Rock resistance is uniform along the entire course
- Erosion is dominant in the steep upper course while deposition and lateral erosion dominate downstream Correct answer.
- The river gains velocity continuously from source to mouth
- Discharge decreases downstream as tributaries join
Explanation
The long profile is steep near the source where vertical erosion is active and flattens towards the mouth where the river approaches base level and deposits its load. The overall result is a curve that is concave upwards.
Question 48Physical Geography
A coastal area experiences a rising sea level and a limited sediment supply. Which shoreline response is most likely over decades?
- The beach progrades seaward as sediment accumulates
- A spit extends across the bay and encloses a lagoon
- The shoreline retreats landward as erosion outpaces deposition Correct answer.
- The cliff line remains fixed because sea level does not affect erosion
Explanation
When sea level rises and sediment input is insufficient, wave erosion removes the beach and the shoreline migrates landward. This coastal retreat is common where defences are absent and sediment budgets are negative.
Question 49Physical Geography
Why is a drainage basin's lag time shortened when its soils are already near saturation before a storm?
- Interception increases as vegetation absorbs more water
- Infiltration capacity is exceeded so a larger share of rainfall becomes overland flow Correct answer.
- Channel capacity increases so water is stored for longer
- The water table falls and increases storage space in the soil
Explanation
When soils are already wet, they cannot absorb much additional rainfall, so infiltration-excess overland flow reaches the channel quickly. This produces a shorter lag and a higher, earlier peak than the same storm on dry ground.
Question 50Physical Geography
Which reasoning best explains why a fjord has extremely steep sides and a deep basin?
- Tectonic uplift raised the valley floor above sea level
- Wave erosion cut a deep trench along a fault before the ice arrived
- Glacial erosion deepened a pre-existing valley below sea level and left steep rock walls before submergence Correct answer.
- River deposition built high levees that later flooded
Explanation
A glacier erodes its bed and sides powerfully, producing a deep U-shaped trough with steep rock walls, and the sea later drowns the trough to form a fjord. The depth and steepness reflect glacial erosion followed by submergence rather than marine or fluvial processes.