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Questions and Answers
What are the four concentric zones of the Earth?
What are the four concentric zones of the Earth?
Inner core, outer core, mantle, and crust.
Describe the lithosphere.
Describe the lithosphere.
The lithosphere consists of the crust and the solid, brittle part of the mantle.
How do igneous rocks form?
How do igneous rocks form?
Igneous rocks form by the solidification of magma or lava.
What are the main components of sedimentary rocks?
What are the main components of sedimentary rocks?
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What distinguishes metamorphic rocks from other rock types?
What distinguishes metamorphic rocks from other rock types?
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What is the significance of the thickness of the Earth's crust?
What is the significance of the thickness of the Earth's crust?
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Why are igneous rocks sometimes categorized alongside sedimentary and metamorphic rocks?
Why are igneous rocks sometimes categorized alongside sedimentary and metamorphic rocks?
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What role do biotic components play in sedimentary rock formation?
What role do biotic components play in sedimentary rock formation?
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What are the four interconnected parts of the Earth system?
What are the four interconnected parts of the Earth system?
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Define disaster management.
Define disaster management.
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List two functions of disaster management plans.
List two functions of disaster management plans.
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What is the role of the lithosphere in the Earth system?
What is the role of the lithosphere in the Earth system?
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What elements predominantly make up the lithosphere?
What elements predominantly make up the lithosphere?
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Explain the concept of vulnerability in disaster risk reduction.
Explain the concept of vulnerability in disaster risk reduction.
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What is the significance of early warning systems in disaster management?
What is the significance of early warning systems in disaster management?
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Describe the greenhouse effect in relation to the atmosphere.
Describe the greenhouse effect in relation to the atmosphere.
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What temperature can the thermosphere reach, and how does this compare with other atmospheric layers?
What temperature can the thermosphere reach, and how does this compare with other atmospheric layers?
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Describe the role of the ozone layer in protecting life on Earth.
Describe the role of the ozone layer in protecting life on Earth.
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At what altitudes is the maximum concentration of ozone found and why is this significant?
At what altitudes is the maximum concentration of ozone found and why is this significant?
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What is ozone depletion and what causes it?
What is ozone depletion and what causes it?
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Explain the ozone-oxygen cycle and its importance.
Explain the ozone-oxygen cycle and its importance.
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What happens when chlorine and bromine radicals are released into the atmosphere?
What happens when chlorine and bromine radicals are released into the atmosphere?
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How do compounds like CFCs contribute to the depletion of the ozone layer?
How do compounds like CFCs contribute to the depletion of the ozone layer?
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What are the potential environmental impacts of ozone layer depletion?
What are the potential environmental impacts of ozone layer depletion?
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What compound is formed when NO2 and NO3 combine?
What compound is formed when NO2 and NO3 combine?
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What are the main greenhouse gases responsible for the greenhouse effect?
What are the main greenhouse gases responsible for the greenhouse effect?
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How has human activity affected global warming in the last hundred years?
How has human activity affected global warming in the last hundred years?
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What role do greenhouse gases play in Earth's climate?
What role do greenhouse gases play in Earth's climate?
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What is the essence of weather as described in the content?
What is the essence of weather as described in the content?
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Explain how heat energy is transferred from the Earth's surface to the atmosphere.
Explain how heat energy is transferred from the Earth's surface to the atmosphere.
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What geological phenomenon does the movement of air primarily relate to?
What geological phenomenon does the movement of air primarily relate to?
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Why did some communities decide to withdraw the operation of jet aircrafts?
Why did some communities decide to withdraw the operation of jet aircrafts?
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What components make up the biosphere?
What components make up the biosphere?
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How is the health of the biosphere determined?
How is the health of the biosphere determined?
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What characterizes a terrestrial ecosystem?
What characterizes a terrestrial ecosystem?
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What are the two main types of aquatic ecosystems?
What are the two main types of aquatic ecosystems?
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Define exposure in the context of hazards.
Define exposure in the context of hazards.
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What does vulnerability refer to in hazard management?
What does vulnerability refer to in hazard management?
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Give an example of a factor that contributes to vulnerability.
Give an example of a factor that contributes to vulnerability.
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What role do aquatic ecosystems play in human society?
What role do aquatic ecosystems play in human society?
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Study Notes
Systems of Earth
- Earth consists of four interconnected spheres: lithosphere, atmosphere, hydrosphere, and biosphere.
- Lithosphere includes the crust and the solid part of the mantle; contains minerals, rocks, and soil.
- Atmosphere's layers include the ozone layer, which protects life by absorbing harmful UV radiation, and contributes to the greenhouse effect.
- Hydrosphere encompasses oceans and inland water bodies; critical for sustaining life.
- Biosphere contains all forms of life and ecosystems, determined by environmental factors such as oxygen, moisture, and temperature.
Disaster Management
- Focuses on conserving lives and property during both natural and human-made disasters.
- Multi-layered disaster management plans address floods, hurricanes, fires, diseases, and droughts.
- Involves understanding key terms: disaster, hazard, exposure, vulnerability, risk, and others relevant to disaster risk reduction.
Lithosphere
- The outer layer of Earth features oceanic and continental crusts; composed of various rocks and minerals.
- Contains over 100 chemical elements; predominantly oxygen, silicon, aluminum, and iron.
- Has four concentric zones: inner core (solid iron), outer core (molten nickel and iron), mantle, and crust (varies in thickness).
Rocks
- Types of rocks include igneous (formed from solidified magma/lava), sedimentary (formed from biotic remnants or precipitation), and metamorphic (altered from existing rocks).
- Igneous rocks comprise primary minerals, while sedimentary rocks contain both primary and secondary minerals.
Atmosphere
- Thermosphere extends from 80 km to about 60,000 km above Earth, characterized by high temperatures and the presence of ions.
- Ozone layer located within the stratosphere, crucial for filtering UV radiation; maximum concentration occurs at 22 km.
Ozone Layer and Depletion
- Ozone layer protects life; its depletion is due to human activities, particularly stable compounds like CFCs and BFCs that release chlorine and bromine radicals.
- These radicals catalyze the breakdown of ozone molecules, reducing their concentration and effectiveness.
Greenhouse Effect
- Involves greenhouse gases (GHGs) such as carbon dioxide, methane, and nitrous oxide; essential for maintaining Earth's temperature.
- GHGs act like a blanket, preventing drastic cooling and allowing life to thrive, though their concentrations vary regionally.
Weather
- Weather is the short-term atmospheric conditions resulting from the heat transfer between Earth’s surface and the atmosphere.
- Influenced by air movement and environmental interactions, can change frequently, impacting ecosystems.
Ecosystems
- Terrestrial ecosystems consist of plants, animals, and microorganisms, interacting with non-living components.
- Aquatic ecosystems include marine and freshwater environments, providing services like water supply, food resources, waste breakdown, and recreational opportunities.
Key Terms in Disaster Risk Management
- Exposure: Presence of people, properties, and systems in hazard zones.
- Vulnerability: Characteristics making a community or system susceptible to damage, influenced by physical, social, economic, and environmental factors.
- Poor construction practices and inadequate risk awareness contribute to increased vulnerability.
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Description
Test your knowledge about the Earth's structure and formation processes. This quiz covers the four concentric zones of the Earth, the characteristics of the lithosphere, and the formation of different types of rocks. Challenge yourself with questions about igneous, sedimentary, and metamorphic rocks.