OBJECTIVES OF TODAY’S ACTIVITY TOPIC: Circulation in the Atmosphere and Oceans After today’s activity, you will be able to: Describe how energy drives.

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OBJECTIVES OF TODAY’S ACTIVITY TOPIC: Circulation in the Atmosphere and Oceans After today’s activity, you will be able to: Describe how energy drives movement and change in the hydrosphere and atmosphere. You should also be able to predict circulation in the atmosphere and hydrosphere may change due to global warming.

CASUAL PRINCIPLES 1. Movement and change require energy 5. Things move from higher gravitational potential to lower gravitational potential 6. Change in temperature causes molecules to move faster or slower 7. When temperature changes the movement of molecules, the density of substances change. Buoyancy causes materials to rise or fall due to the relative density of materials.

Demonstration: Circulation Videos about temperature-drive circulation of fluids. pvo&feature=fvwhttp:// pvo&feature=fvw =relatedhttp:// =related

Background: Temperature and Density Circulation: The movement of material due to differences in those materials. Q. How will temperature cause differences in density? A. Increasing temperature causes molecules to move faster, spread out and for the density of decrease. Insert an image that shows this…

Background: Atmospheric Circulation Q. What happens in a system when one place is heated more than another place? A. Warmer regions will rise due to the lower density, and colder places will sink due to higher density.

Background: Density of Saline Water Q. What happens to the density of water if salt is added? A. Salt water is more dense than fresh water because there are NaCl molecules within the H2O adding matter to the mixture.

Background: Haline Circulation Q. What will happen in a system where there is lower density fresh water and higher density salt water? A.Salt water sinks and fresh water rises.

TARGET: Lava Lamp There are features of the lava lamp and atmospheric circulation that correspond to the basic principles we use to explain movement and change. Lava lampPrinciple Hot and cold regions Heat from light bulb Two fluids Spherical and cylindrical masses of circulating fluid

ANALOGY: Atmospheric Circulation There are features of the lava lamp and atmospheric circulation that correspond to the basic principles we use to explain movement and change. Lava lampPrinciple Hot and cold regions Heat from light bulb Two fluids Spherical and cylindrical masses of circulating fluid

INFERENCE: Comparing Lava Lamp - Atmosphere There are features of the lava lamp and atmospheric circulation that correspond to the basic principles we use to explain movement and change. Lava lampAtmosphere Features related to density Hot and cold regions Primary source of energy for movement Heat from light bulb

Group work & Homework: Circulation Handout: Step 2 of Analogy: Thermohaline Circulation Step 2 of Non-Analogy: Box & Arrow diagram? Homework: Step 3 of Analogy: Comparing two systems (submit to ANGEL) Step 3 of Non-Analogy: Comparing two systems (submit to ANGEL) For next class: Readings & Definitions for next units