Overview
1. Watch the first video. Nitrogen is liquid at 77 K. What is happening, in terms of heat, to these objects?
- What happens in terms of temperature?
- What happens in terms of phase?
- Why does the liquid nitrogen have bubbles?
2. Watch the second video. Connect the safe method of plunging your hand into molten metal to heat conduction.
- Why does water work specifically well as a protective barrier?
- Why do you have to do dunk your hand in and out quickly?
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