Climatic Environments (Leaving Cert Geography): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is an ice age?
What is an ice age?
Extended period of low temps & ice sheets
When did the Pleistocene Ice Age begin?
When did the Pleistocene Ice Age begin?
2.6 million years ago
What is the Holocene?
What is the Holocene?
Current interglacial period
What characterises interglacial periods?
What characterises interglacial periods?
Warmer temps & retreating ice sheets
Who developed the theory of Milankovitch cycles?
Who developed the theory of Milankovitch cycles?
Serbian astrophysicist in early 1900s
How long is the eccentricity cycle?
How long is the eccentricity cycle?
100,000 years
What is Earth's current axial tilt?
What is Earth's current axial tilt?
23.5°
Between what angles does Earth's axial tilt vary?
Between what angles does Earth's axial tilt vary?
22° and 24.5°
How long does the precession cycle take?
How long does the precession cycle take?
26,000 years
What is key to ice age formation?
What is key to ice age formation?
Summer solar radiation at polar regions
What happens when summer radiation decreases in polar regions?
What happens when summer radiation decreases in polar regions?
Snow accumulates & ice sheets form
What evidence supports Milankovitch theory?
What evidence supports Milankovitch theory?
Ice cores & ocean sediments