Climate Change Quiz

What are some natural causes of climate change?

• Human activities, volcanic eruptions, and ocean currents

• Solar variations, internal variability, and continental drift

• Earth's orbital changes, volcanic eruptions, and ocean currents

• Ocean currents, solar variations, and human activities

Answer explanation

The question asks about natural causes of climate change. The correct answer is Earth's orbital changes, volcanic eruptions, and ocean currents. These factors contribute to climate change without human intervention. Other options, such as human activities and solar variations, are not solely natural causes. The explanation highlights the correct choice and follows the given conditions, including not mentioning option numbers and using the term 'question' instead of 'query'.

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SEV2a

What is the main effect of volcanic eruptions on the climate?

• Long-term warming

• Short-term cooling

• Increased precipitation

• Enhanced greenhouse effect

Answer explanation

Volcanic eruptions have a short-term cooling effect on the climate. This occurs because the volcanic ash and gases released during an eruption can block sunlight, leading to a decrease in temperature. Additionally, volcanic aerosols can reflect sunlight back into space, further contributing to the cooling effect. It is important to note that while volcanic eruptions can cause short-term cooling, their long-term impact on climate change is minimal.

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SEV2a

Which gas released during volcanic eruptions has a cooling effect on the climate?

• Carbon dioxide (CO2)

• Sulfur dioxide (SO2)

• Methane (CH4)

• Nitrous oxide (N2O)

Answer explanation

Volcanic eruptions release various gases into the atmosphere. One of these gases, sulfur dioxide (SO2), has a cooling effect on the climate. It forms aerosols in the stratosphere, which reflect sunlight back into space, reducing the amount of solar radiation reaching the Earth's surface. This helps to lower temperatures. Sulfur dioxide is the correct choice as it directly contributes to the cooling effect caused by volcanic eruptions.

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SEV2a

What is the El Niño-La Niña cycle?

• A cycle of volcanic eruptions

• A cycle of ocean acidification

• A cycle of sea level rise

• A cycle of sea surface temperature changes

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SEV2a

Which phenomenon increases global temperature during the El Niño phase?

• Warmer water and heavier rainfall

• Cooler water and drought conditions

• Neutral sea surface temperature

• Increased ocean acidification

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SEV2a

What are Milankovitch cycles?

• Cycles of volcanic eruptions

• Cycles of ocean current changes

• Cycles of Earth's orbital changes

• Cycles of atmospheric temperature variations

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SEV2a

How do shifts and wobbles in the Earth's orbit affect climate?

• They cause short-term cooling

• They trigger ice ages

• They lead to long-term warming

• They have no significant impact on climate

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SEV2a

What is the role of ocean currents in the climate system?

• They regulate atmospheric temperature

• They cause volcanic eruptions

• They control solar variations

• They distribute heat energy and regulate weather

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SEV2a

What factors influence the density of ocean water?

• Temperature, salinity, and depth

• Wind speed, cloud cover, and humidity

• Latitude, longitude, and altitude

• Pressure, air density, and precipitation

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SEV2a

What is the global conveyor belt in the ocean?

• A system of deep ocean currents

• A network of underwater volcanoes

• A mechanism for carbon sequestration

• A process of desalination

Answer explanation

The global conveyor belt in the ocean refers to a system of deep ocean currents. It is not a network of underwater volcanoes, a mechanism for carbon sequestration, or a process of desalination. The correct choice is 'A system of deep ocean currents'. This system plays a crucial role in the circulation of heat and nutrients around the globe. It helps regulate Earth's climate and influences marine ecosystems. The global conveyor belt is an important concept in oceanography and understanding ocean circulation.

Tags

SEV2a