Natural Causes Of Climate Change :Year 8 Summer Geography Assesment Flashcards
(27 cards)
What is the primary natural cause of climate change related to the Earth’s position in space?
Milankovitch cycles
True or False: Volcanic eruptions can lead to short-term cooling of the Earth’s climate.
True
Fill in the blank: The greenhouse gases released by volcanic eruptions primarily include _____ and water vapor.
carbon dioxide
What natural phenomenon can cause significant variations in climate over decades?
El Niño and La Niña
Which gas released from volcanic eruptions can contribute to the greenhouse effect?
Carbon dioxide
What is the term for the long-term changes in temperature and weather patterns on Earth?
Climate change
True or False: Solar radiation has a significant impact on Earth’s climate.
True
What are the three main types of Milankovitch cycles?
Eccentricity, axial tilt, and precession
Fill in the blank: The _____ effect refers to the warming of the Earth’s surface due to the trapping of heat by greenhouse gases.
greenhouse
What is one effect of ocean currents on global climate?
They help distribute heat around the planet.
True or False: Natural climate change is solely caused by human activities.
False
Which celestial body’s activity can influence Earth’s climate through solar cycles?
The Sun
What is the impact of ice ages on global sea levels?
They cause sea levels to drop.
Fill in the blank: Major volcanic eruptions can inject _____ particles into the atmosphere, leading to cooling.
sulfur
What is a significant effect of the Earth’s axial tilt on climate?
It affects seasonal temperature variations.
True or False: Changes in Earth’s orbit can lead to glacial and interglacial periods.
True
What is the role of oceanic heat absorption in climate regulation?
It moderates global temperatures.
Which natural event is characterized by a periodic warming of sea surface temperatures in the Pacific Ocean?
El Niño
Fill in the blank: The _____ cycle affects the distribution of solar energy received by the Earth.
eccentricity
What natural process can lead to increased atmospheric carbon dioxide levels over long time scales?
Weathering of rocks
True or False: Human activities have no impact on natural climate change.
False
What is the term for the gradual increase in Earth’s average temperature due to natural causes?
Global warming
Which natural factor can lead to variations in solar energy reaching the Earth?
Sunspot cycles
