A supplementary Guide to the Viewing of the TVB programme 'The Varnishing Glacier'.

The TVB show on the Varnishing Glaciers is highly recommended to teachers and students. The explanations on earth science phenomena in the show may be brief. The following documents are intended to provide a slightly more in-depth discussion of the various concepts introduced in the programme.

Topics

• What is the Arctic Circle?
• Seasons inside the Arctic Circle.
• Why is Iceland so warm, and Greenland not so green?
• Why is the water warmer at a greater depth in Greenland?
• How are northern lights produced?
• Why do northern nights come up only at night time?
• Why are northern lights so colorful?
• How does a glacier move?
• Why do glaciers surge?
• Why do icebergs have so many different forms?
• Iceland is a plate boundary on a hotspot!
• Volcanic rocks of Iceland.
• How is geothermal energy extracted?
• How hot the hot springs?
• Why do geysers erupt?