Diva Dollar Question Why does a large pot of water take so long to boil? (Hint: Look at the front of the ESRT’s)

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Presentation transcript:

Diva Dollar Question Why does a large pot of water take so long to boil? (Hint: Look at the front of the ESRT’s)

Aim: How are the phase changes of water shown on a graph? Topic: Water Cycle & Climate Main Idea: Heating Curve of Water

1) Which heats up faster: a metal fork or a wooden fork? A metal fork heats up faster because it has a lower specific heat (amt of heat needed to raise the temp.).

2) What is latent heat? This is heat energy absorbed or released during a phase change.

3) What is a “phase change”? Melting= solid to liquid= energy absorbed Evaporation= liquid to gas= energy absorbed Condensation= gas to liquid= energy released Freezing= liquid to solid= energy released

What is a heating curve?

4) What do the flat lines on a heating curve represent? These represent when energy is being absorbed or released and water is changing phase.

5) What do the slanted lines on a heating curve represent? These represent when water is in a phase (solid, liquid or gas).

Diva Dollar Question Why does the temperature go up just before it rains but not before it snows?

evaporation(condensation) energy released gas evaporation(condensation) (2260 J/g) liquid melting(freezing) (334 J/g) solid energy absorbed

Summary: Answer the questions at the bottom of the notes.