Geography Term 4 Test
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Questions and Answers

What is the primary state of water that is less dense than liquid water?

  • Steam
  • Water vapor
  • Liquid water
  • Ice (correct)

Which form of water covers about 71% of the Earth's surface?

  • Ice
  • Steam
  • Liquid Water (correct)
  • Water Vapor

What is the gaseous state of water called?

  • Solid Water
  • Ice Vapor
  • Liquid Water
  • Water Vapor (correct)

Which process involves the cooling and condensing of water vapor into clouds?

<p><em>Condensation</em> (C)</p> Signup and view all the answers

What process involves the release of water vapor into the air from water bodies and plants?

<p><em>Evapotranspiration</em> (B)</p> Signup and view all the answers

What describes the continuous movement of water within the Earth and its atmosphere?

<p><em>The Hydrological Cycle</em> (B)</p> Signup and view all the answers

What happens when cloud particles become too heavy to remain airborne?

<p>They form precipitation (rain, sleet, hail, or snow). (A)</p> Signup and view all the answers

What percentage of the world's water is fresh water?

<p>3% (B)</p> Signup and view all the answers

Where is the majority of Earth's fresh water stored?

<p>In icecaps and glaciers (C)</p> Signup and view all the answers

What influences climate patterns by heating or cooling the air above them?

<p>Ocean currents (D)</p> Signup and view all the answers

Which factor primarily drives surface ocean currents?

<p>Wind (C)</p> Signup and view all the answers

How does the Coriolis effect influence ocean currents' direction?

<p>Causes deflection to the right in the Northern Hemisphere and to the left in the Southern Hemisphere (A)</p> Signup and view all the answers

Which warm ocean current flows from the USA across the Atlantic to Europe, impacting north-western Europe's climate?

<p>Gulf Stream (C)</p> Signup and view all the answers

What is a significant economic activity related to oceans that relies on nutrient-rich cold waters of currents like the Benguela?

<p>Fishing (C)</p> Signup and view all the answers

What is not true about ocean currents?

<p>They have no impact on marine life. (B)</p> Signup and view all the answers

What role do icecaps and glaciers play in global water distribution?

<p>They store most of Earth's fresh water. (B)</p> Signup and view all the answers

What major threat does overfishing pose to marine biodiversity?

<p>Decrease in marine biodiversity (B)</p> Signup and view all the answers

Which industry benefits from warm currents along coasts like KwaZulu-Natal in South Africa?

<p>Tourism industry (B)</p> Signup and view all the answers

Which process is mentioned as energy-intensive and costly in the context of desalination?

<p>Boiling (A)</p> Signup and view all the answers

What is a significant impact of ocean pollution on human health?

<p>Devastating effects on human health (A)</p> Signup and view all the answers

In South Africa, what is the average annual rainfall compared to the global average?

<p>Lower than the global average (C)</p> Signup and view all the answers

What is a predicted impact of climate change on water management in South Africa?

<p>Longer dry spells (B)</p> Signup and view all the answers

What impact do dams have on ecosystems according to the text?

<p>Reducing water quality (C)</p> Signup and view all the answers

How do fertilizers and pesticides contribute to water pollution according to the text?

<p>Through processes like eutrophication (C)</p> Signup and view all the answers

What purpose do dams serve in South Africa?

<p>Managing and storing water (B)</p> Signup and view all the answers

What contributes to reduced infiltration and increased runoff according to the text?

<p>Urbanization (C)</p> Signup and view all the answers

What is a major challenge faced in the implementation of the Free Basic Water (FBW) policy?

<p>Rapid urbanization leading to logistical constraints (D)</p> Signup and view all the answers

Who is primarily responsible for managing local water resources according to the text?

<p>Municipalities (C)</p> Signup and view all the answers

What is a strategy mentioned for sustainable water use in the text?

<p>Recycling water (A)</p> Signup and view all the answers

Which type of projects showcase the government's role in enhancing water availability based on the text?

<p>Water infrastructure projects (C)</p> Signup and view all the answers

What key factor can cause coastal flooding according to the text?

<p>Strong winds combined with high tides (D)</p> Signup and view all the answers

Which human activities contribute to increased flood severity?

<p>Urbanization and deforestation (D)</p> Signup and view all the answers

What do flood hydrographs help in understanding according to the text?

<p>Land use effects on river discharge (D)</p> Signup and view all the answers

'Lag time' in flood management refers to:

<p>The delay between peak rainfall and peak discharge (B)</p> Signup and view all the answers

What is the primary driver of the hydrological cycle?

<p>Solar energy (C)</p> Signup and view all the answers

Which process involves the formation of clouds from water vapor condensation?

<p>Condensation (A)</p> Signup and view all the answers

Why does ice float on liquid water?

<p>Ice expands and is less dense than liquid water (D)</p> Signup and view all the answers

In which state does water exist in its gaseous form in the atmosphere?

<p>Water vapor (D)</p> Signup and view all the answers

What percentage of the Earth's surface is covered by liquid water in oceans, rivers, and lakes?

<p>71% (A)</p> Signup and view all the answers

What happens when water vapor from the air condenses into tiny droplets?

<p>It forms clouds (D)</p> Signup and view all the answers

What is a key challenge that climate change poses to water management in South Africa?

<p>Longer dry spells and severe floods (D)</p> Signup and view all the answers

How do dams impact ecosystems, according to the text?

<p>Cause disruptions and flooding (C)</p> Signup and view all the answers

What major environmental concern arises from urbanization as discussed in the text?

<p>Altered river flows and polluted waters (A)</p> Signup and view all the answers

Which process is mentioned as energy-intensive and costly for water production from seawater?

<p>Reverse osmosis (A)</p> Signup and view all the answers

What is a significant impact of ocean pollution on marine life?

<p>Devastating effects on marine life (D)</p> Signup and view all the answers

What is a key factor contributing to water pollution from human activities?

<p>Increased eutrophication (D)</p> Signup and view all the answers

Which region of South Africa experiences no rain in winter and no summer rain either?

<p>Western Cape (B)</p> Signup and view all the answers

What is the primary role of desalination as discussed in the text?

<p>Providing water for arid regions (A)</p> Signup and view all the answers

What percentage of Earth's water is held in icecaps and glaciers?

<p>68.7% (A)</p> Signup and view all the answers

What is the primary method by which water returns from the atmosphere to the surface of the Earth?

<p>Precipitation (D)</p> Signup and view all the answers

Which ocean current flows along the east coast of South Africa and influences local climate and marine life?

<p>Agulhas Current (D)</p> Signup and view all the answers

What percentage of surface water is made up of swamps?

<p>11% (C)</p> Signup and view all the answers

What factor causes water to move due to variations in density?

<p>Salinity (A)</p> Signup and view all the answers

Which ocean current influences the climate of north-western Europe flowing from the USA across the Atlantic?

<p>Gulf Stream (C)</p> Signup and view all the answers

What is the primary source of oxygen production from oceans?

<p>Algae and Plankton (C)</p> Signup and view all the answers

What affects deep ocean currents by influencing water density?

<p>Temperature (D)</p> Signup and view all the answers

What is a significant problem that arises from overfishing in oceans?

<p>Reduced fish stocks (A)</p> Signup and view all the answers

What type of energy resources are sourced from oceans?

<p>Wind and solar energy (A)</p> Signup and view all the answers

What poses a challenge to the actual implementation of the Free Basic Water (FBW) policy?

<p>Logistical and financial constraints (A)</p> Signup and view all the answers

Which entity plays a critical role in managing local water resources and ensuring quality water supply to the populace?

<p>Water Boards (B)</p> Signup and view all the answers

What is a strategy mentioned in the text for conserving water and maintaining quality?

<p>Restoring wetlands (D)</p> Signup and view all the answers

What is the primary human cause of downstream flooding according to the text?

<p>Poor Water Management (D)</p> Signup and view all the answers

Which factor typically shortens lag time and increases discharge in flood hydrographs?

<p>Land Use Effects (D)</p> Signup and view all the answers

What is a characteristic of floods mentioned as causing extensive damage to infrastructure and agriculture?

<p>Water-borne Diseases (B)</p> Signup and view all the answers

What is a flood management strategy aimed at preventing overflow?

<p>Construction of Barriers (C)</p> Signup and view all the answers

Which event can lead to significant coastal flooding according to the text?

<p>Onshore Winds and High Tides (B)</p> Signup and view all the answers

What can exacerbate the frequency and severity of floods according to the text?

<p>Impacts of Deforestation and Poor Farming (B)</p> Signup and view all the answers

What influences flood potential by representing the delay between peak rainfall and peak discharge?

<p>Lag Time (A)</p> Signup and view all the answers

What unique characteristic of ice is mentioned in the text?

<p>Expanding and moving further apart when freezing (B)</p> Signup and view all the answers

Which process involves the formation of clouds from water vapor condensation?

<p>Condensation (D)</p> Signup and view all the answers

What describes the continuous movement of water within the Earth and its atmosphere?

<p>Hydrological cycle (D)</p> Signup and view all the answers

What is the primary role of the hydrological cycle in Earth's systems?

<p>Driving weather and climate systems (B)</p> Signup and view all the answers

Which state of water covers about 71% of the Earth's surface according to the text?

<p>Liquid water (A)</p> Signup and view all the answers

What happens when cloud particles become too heavy to remain airborne?

<p>They fall as precipitation (B)</p> Signup and view all the answers

What is a significant challenge posed by overfishing to marine biodiversity?

<p>Diminished fish populations (D)</p> Signup and view all the answers

What is a key impact of desalination processes on water availability?

<p>Increased water scarcity (B)</p> Signup and view all the answers

How do warm ocean currents benefit tourism along coasts like KwaZulu-Natal in South Africa?

<p>Attracting diverse marine life (D)</p> Signup and view all the answers

What is a significant prediction about climate change impacts on river runoff in South Africa?

<p>Decrease in runoff along the east coast (A)</p> Signup and view all the answers

How do dams in South Africa impact ecosystems?

<p>Causing disruptions to traditional living areas (A)</p> Signup and view all the answers

What is the primary negative consequence of high evaporation rates on water availability in South Africa?

<p>Water loss through evaporation (A)</p> Signup and view all the answers

What role do rivers play in South Africa compared to other major African rivers like the Zambezi?

<p>Lack of large estuaries and lakes (B)</p> Signup and view all the answers

How do urbanization and human activities impact water quality according to the text?

<p>Leading to reduced infiltration and increased runoff (D)</p> Signup and view all the answers

'Eutrophication' as mentioned in the text is primarily caused by:

<p>'High levels of nutrients entering water bodies' (C)</p> Signup and view all the answers

'Traditional living areas' are most disrupted by:

<p>'Dams and infrastructure developments' (A)</p> Signup and view all the answers

What is a common physical cause of floods mentioned in the text?

<p>High rainfall (C)</p> Signup and view all the answers

In what type of areas are low-lying regions particularly susceptible to flooding due to slower river flows?

<p>Geographically flat areas (A)</p> Signup and view all the answers

What human activity can accelerate runoff in urban areas according to the text?

<p>Impermeable surface construction (C)</p> Signup and view all the answers

What is a significant impact of floods on society as mentioned in the text?

<p>Spread of water-borne diseases (C)</p> Signup and view all the answers

What type of practices increase soil erosion and enhance surface runoff, contributing to floods?

<p>Deforestation and poor farming (B)</p> Signup and view all the answers

What tool is crucial for understanding river discharge patterns over time?

<p>Hydrograph (A)</p> Signup and view all the answers

What factor typically shortens lag time and increases discharge in flood hydrographs?

<p>&quot;Gray&quot; infrastructure development (C)</p> Signup and view all the answers

What is a common human cause of downstream flooding according to the text?

<p>&quot;Gray&quot; infrastructure development (C)</p> Signup and view all the answers

"Flood defences" is a flood management strategy aimed at preventing what?

<p>&quot;Overflow&quot; (C)</p> Signup and view all the answers

"Land-use policies" are implemented with the aim of restricting development in what type of areas?

<p>Flood-prone areas (B)</p> Signup and view all the answers

What is the primary method by which water returns from the atmosphere to the surface of the Earth?

<p>Precipitation (C)</p> Signup and view all the answers

Which factor primarily influences deep ocean currents by causing water to move?

<p>Salinity (C)</p> Signup and view all the answers

What is a significant environmental concern related to overfishing?

<p>Depleted fish stocks (A)</p> Signup and view all the answers

Which ocean current flows along the west coast of South Africa and influences local climate and marine life?

<p>Benguela Current (D)</p> Signup and view all the answers

What causes water to deflect either to the right or left in the Earth's oceans?

<p>Coriolis effect (A)</p> Signup and view all the answers

Which region holds the second-largest reserve of fresh water according to the text?

<p>Groundwater (D)</p> Signup and view all the answers

What is a key role that wind plays in influencing ocean currents?

<p>Generating surface currents (A)</p> Signup and view all the answers

What percentage of Earth's water is stored in icecaps and glaciers?

<p>~68.7% (D)</p> Signup and view all the answers

'The hydrological cycle facilitates the distribution and renewal of Earth's water supply' - Which term describes this cycle?

<p><strong>Water cycle</strong> (A)</p> Signup and view all the answers

What is a significant source of oxygen production from oceans according to the text?

<p>Plankton (C)</p> Signup and view all the answers

What unique characteristic of liquid water allows it to conform to the shape of its container?

<p>Low surface tension (D)</p> Signup and view all the answers

Which key process of the hydrological cycle involves the cooling and condensing of water vapor into clouds?

<p>Condensation (C)</p> Signup and view all the answers

What is the primary reason ice floats on liquid water, as mentioned in the text?

<p>Expansion and increased density when frozen (A)</p> Signup and view all the answers

What causes water vapor to condense into clouds in the atmosphere?

<p>Cooling of water vapor (D)</p> Signup and view all the answers

Which characteristic of water vapor leads to its presence in the air in the gaseous state?

<p>High heat capacity (D)</p> Signup and view all the answers

What is the critical difference between ice (solid) and liquid water based on their behavior, as discussed in the text?

<p>Ice is denser than liquid water (C)</p> Signup and view all the answers

What is the primary method for mitigating the impacts of floods as discussed in the text?

<p>Developing efficient forecasting systems (D)</p> Signup and view all the answers

How do human activities contribute to increased flood severity according to the text?

<p>By removing vegetation that helps absorb water (A)</p> Signup and view all the answers

What is a key physical cause of coastal flooding mentioned in the text?

<p>High tides combined with strong winds (B)</p> Signup and view all the answers

How do flood hydrographs aid in flood management?

<p>By displaying river discharge patterns over time (A)</p> Signup and view all the answers

What is a significant challenge faced in the actual implementation of the Free Basic Water (FBW) policy?

<p>Logistical and financial constraints in urban areas (D)</p> Signup and view all the answers

What is a common human cause of floods mentioned in the text?

<p>Deforestation and poor farming practices (B)</p> Signup and view all the answers

In flood management, what do flood defences primarily aim to achieve?

<p>Construction of barriers to prevent overflow (C)</p> Signup and view all the answers

What is a primary reason why desalination processes are considered energy-intensive and costly?

<p>The need for extensive infrastructure (C)</p> Signup and view all the answers

Which region in South Africa experiences no rain in winter and also has a lack of summer rain?

<p>Western Cape (D)</p> Signup and view all the answers

What significant impact do dams have on ecosystems according to the text?

<p>Altering habitats and ecosystems (C)</p> Signup and view all the answers

Which area in South Africa has low average rainfall compared to the global average?

<p>Northern Cape (C)</p> Signup and view all the answers

What is a common negative consequence of overfishing on marine biodiversity?

<p>Disruption of food chains (C)</p> Signup and view all the answers

Which human activity contributes to reduced infiltration, increased runoff, and altered river flows?

<p>Agriculture (D)</p> Signup and view all the answers

What is the primary role of the South African Sustainable Seafood Initiative (SASSI)?

<p>Regulating fishing quotas for biodiversity conservation (B)</p> Signup and view all the answers

What is a significant prediction about climate change impacts on river runoff in South Africa?

<p>Longer dry spells and more frequent floods (B)</p> Signup and view all the answers

How do high evaporation rates affect water availability in South Africa?

<p>Reduce freshwater availability (C)</p> Signup and view all the answers

What impact does runoff acceleration have on urban areas according to the text?

<p>Increased likelihood of flooding (B)</p> Signup and view all the answers

What is the primary method by which water returns from the atmosphere to the surface of the Earth?

<p>Precipitation (A)</p> Signup and view all the answers

Which factor primarily influences deep ocean currents by causing water to move?

<p>Temperature (A)</p> Signup and view all the answers

What is a major challenge faced in the implementation of the Free Basic Water (FBW) policy?

<p>Funding constraints (D)</p> Signup and view all the answers

Which ocean current flows from the USA across the Atlantic to Europe, impacting north-western Europe's climate?

<p>Gulf Stream (C)</p> Signup and view all the answers

What influences climate patterns by heating or cooling the air above them?

<p>Ocean currents (C)</p> Signup and view all the answers

'Lag time' in flood management refers to:

<p>The time between peak rainfall and peak discharge (C)</p> Signup and view all the answers

What is a significant impact of ocean pollution on human health?

<p>Mercury poisoning from contaminated fish consumption (B)</p> Signup and view all the answers

What causes water to deflect either to the right or left in Earth's oceans?

<p>Coriolis effect (D)</p> Signup and view all the answers

What is a significant problem that arises from overfishing in oceans?

<p>Disruption of marine ecosystems (D)</p> Signup and view all the answers

What is a characteristic of floods mentioned as causing extensive damage to infrastructure and agriculture?

<p>Floods erode soil, damage crops, and destroy buildings. (D)</p> Signup and view all the answers

What are the primary challenges to implementing the Free Basic Water (FBW) policy?

<p>Logistical and financial obstacles in rapidly urbanizing areas (A)</p> Signup and view all the answers

How do floods caused by snow melting differ from those caused by high rainfall as per the text?

<p>Snow melting floods lead to rapid flooding compared to high rainfall floods (D)</p> Signup and view all the answers

What is a consequence of poor water management on flood occurrence according to the text?

<p>Increased likelihood of rapid water release leading to flooding (B)</p> Signup and view all the answers

How do urban areas contribute to flood risks according to the text?

<p>By accelerating runoff through impermeable surfaces (A)</p> Signup and view all the answers

What is the primary focus of flood defences in flood risk management strategies?

<p>Constructing barriers and levees to prevent overflow (D)</p> Signup and view all the answers

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