Changes in Spin, Tilt & Orbit of Earth (Leaving Cert CASD): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which celestial bodies' gravity causes Earth's orbital variations?
Which celestial bodies' gravity causes Earth's orbital variations?
Sun, Moon & large planets
Who identified the three main astronomical cycles affecting Earth's climate?
Who identified the three main astronomical cycles affecting Earth's climate?
Milutin Milankovitch
How long are the orbital eccentricity cycles?
How long are the orbital eccentricity cycles?
100,000 & 413,000 years
What is Earth's current axial tilt angle?
What is Earth's current axial tilt angle?
23.5°
How long is the axial tilt (obliquity) cycle?
How long is the axial tilt (obliquity) cycle?
41,000 years
How long does the precession (axial wobble) cycle take?
How long does the precession (axial wobble) cycle take?
19,000-24,000 years
What happens in the ice-albedo feedback loop?
What happens in the ice-albedo feedback loop?
More ice reflects sunlight, cooling further
When do glacial periods (ice ages) occur?
When do glacial periods (ice ages) occur?
When high latitudes get less summer sun
Why don't orbital variations explain current climate change?
Why don't orbital variations explain current climate change?
They operate too slowly
What does the cryosphere include?
What does the cryosphere include?
All frozen water on Earth