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Class 6 Exam  >  Class 6 Tests  >  IGCSE Cambridge Science for Year 6  >  Test: The Earth and its Atmosphere -1 - Class 6 MCQ

Test: The Earth and its Atmosphere -1 - Class 6 MCQ


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10 Questions MCQ Test IGCSE Cambridge Science for Year 6 - Test: The Earth and its Atmosphere -1

Test: The Earth and its Atmosphere -1 for Class 6 2024 is part of IGCSE Cambridge Science for Year 6 preparation. The Test: The Earth and its Atmosphere -1 questions and answers have been prepared according to the Class 6 exam syllabus.The Test: The Earth and its Atmosphere -1 MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: The Earth and its Atmosphere -1 below.
Solutions of Test: The Earth and its Atmosphere -1 questions in English are available as part of our IGCSE Cambridge Science for Year 6 for Class 6 & Test: The Earth and its Atmosphere -1 solutions in Hindi for IGCSE Cambridge Science for Year 6 course. Download more important topics, notes, lectures and mock test series for Class 6 Exam by signing up for free. Attempt Test: The Earth and its Atmosphere -1 | 10 questions in 15 minutes | Mock test for Class 6 preparation | Free important questions MCQ to study IGCSE Cambridge Science for Year 6 for Class 6 Exam | Download free PDF with solutions
Test: The Earth and its Atmosphere -1 - Question 1
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Why is understanding plate tectonics considered crucial in various fields such as geological sciences, urban planning, and disaster management?

Detailed Solution for Test: The Earth and its Atmosphere -1 - Question 1
Understanding plate tectonics is crucial in geological sciences, urban planning, and disaster management because it helps in informing building codes and safety measures in earthquake and volcano-prone areas. By understanding how tectonic plates move and interact, scientists, urban planners, and disaster management authorities can better prepare for and mitigate the impact of seismic events.
Test: The Earth and its Atmosphere -1 - Question 2
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How can the amount of different gases in the air be measured according to the described experiment involving a heated copper tube?

Detailed Solution for Test: The Earth and its Atmosphere -1 - Question 2
The amount of different gases in the air can be measured by passing air over heated copper. In this experiment, as air passes over the heated copper, it reacts with oxygen to form copper oxide, which helps indicate the amount of oxygen present in the air sample.
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Test: The Earth and its Atmosphere -1 - Question 3
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When did photosynthetic bacteria evolve and begin producing oxygen, as mentioned in the context of natural processes shaping atmospheric composition?

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Photosynthetic bacteria evolved and started producing oxygen approximately 2.7 billion years ago. This significant development played a crucial role in altering the composition of the Earth's atmosphere, paving the way for the progression of life forms dependent on oxygen for survival.
Test: The Earth and its Atmosphere -1 - Question 4
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How do natural processes impact the mixture of gases in the atmosphere?
Detailed Solution for Test: The Earth and its Atmosphere -1 - Question 4
Natural processes such as the absorption of carbon dioxide by oceans and its subsequent release impact the mixture of gases in the atmosphere. This process helps reduce atmospheric CO2 levels. When water vapor in oceans freezes, it locks in carbon dioxide, aiding in this reduction.
Test: The Earth and its Atmosphere -1 - Question 5
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What are some environmental and health implications of pollutants from burning fossil fuels?
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Pollutants from burning fossil fuels like coal and diesel contribute to the formation of smog, which is a mixture of smoke and fog. This smog can have detrimental effects on both human health and the environment.
Test: The Earth and its Atmosphere -1 - Question 6
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What is the primary purpose of understanding and managing our environmental impact, as emphasized in the provided content?
Detailed Solution for Test: The Earth and its Atmosphere -1 - Question 6
Understanding and managing our environmental impact are crucial to ensure the sustainability of our planet and the health of its inhabitants. This involves recognizing the effects of human activities on the environment and taking measures to mitigate negative impacts, thereby contributing to the well-being of present and future generations.
Test: The Earth and its Atmosphere -1 - Question 7
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In what way does each key process of the water cycle contribute to the distribution and management of Earth's water resources?
Detailed Solution for Test: The Earth and its Atmosphere -1 - Question 7
Each key process of the water cycle plays a significant role in the distribution and management of Earth's water resources. Precipitation, for example, is vital as it replenishes water sources such as rivers, lakes, and groundwater, ensuring a continuous supply of freshwater essential for various ecosystems and human activities.
Test: The Earth and its Atmosphere -1 - Question 8
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How does the continuous movement of water in the water cycle impact the sustainability of ecosystems and human societies?
Detailed Solution for Test: The Earth and its Atmosphere -1 - Question 8
The continuous movement of water in the water cycle is crucial for sustaining ecosystems and supporting human livelihoods. This cycle ensures the availability of freshwater for plants, animals, and human populations, regulating climate patterns, nourishing agriculture, and maintaining diverse habitats essential for biodiversity and human well-being.
Test: The Earth and its Atmosphere -1 - Question 9
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Which pathway describes the movement of water over land, eventually accumulating in rivers, lakes, and returning to the oceans?
Detailed Solution for Test: The Earth and its Atmosphere -1 - Question 9
Surface Runoff refers to the movement of water over the land surface, collecting in rivers, lakes, and eventually flowing back to the oceans. This process plays a vital role in transporting water and nutrients across different regions, influencing the water cycle and shaping landscapes through erosion and sediment transport.
Test: The Earth and its Atmosphere -1 - Question 10
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What is the primary role of warm winds in the water cycle?
Detailed Solution for Test: The Earth and its Atmosphere -1 - Question 10
Warm winds play a crucial role in the water cycle by carrying water vapor across continents. As these warm winds move over the oceans, they pick up moisture which eventually condenses and precipitates over land when the air rises and cools. This transportation of water vapor is essential for the distribution of precipitation across different regions.
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