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S6E3.a: Ask questions to determine where water is located on Earth’s…
S6E3.a
: Ask questions to determine where water is located on Earth’s surface (oceans, rivers, lakes, swamps, groundwater, aquifers, and ice) and communicate the relative proportion of water at each location.
S6E3.b
: Plan and carry out an investigation to illustrate the role of the sun’s energy in atmospheric conditions that lead to the cycling of water.
Knowledge/Skills
Hydrosphere is the combined mass of water found on, under and over the surface of the planet
Water Allocation
1.81% Glacial Ice
.005% Soil Moisture
.63% Groundwater
97.5% Oceans
.001% Atmosphere
.016% Lakes and Streams
Water
Denser in liquid form
Denser when cold
Has a high specific heat
Evaporation, Condensation, Precipitation, Runoff, Deposition, Infiltration, Transpiration, Aquifers, Water table,
Feedback loops
Positive = Change in variable in systems leads to changes in same variable in same direction
Negative = change in variable leads to changes in variable in opposite direction
Essential Questions
What are the different places water is located on Earth?
How much of Earth's water is in each location?
What is the role of the sun's energy in hydrosphere?
Prior Knowledge
Students should have an idea of how they use water in their daily lives and where that water comes from. They also may know a little bit about the water cycle and where rain comes from.
Learning Activities
Have students draw their own hydrosphere and label it.
Water Cycle/Hydrosphere
S6E3.c
: Ask questions to identify and communicate, using graphs and maps, the composition, location, and subsurface topography of the world’s oceans.
S6E3.d
: Analyze and interpret data to create graphic representations of the causes and effects of waves, currents, and tides in the Earth’s systems.
Knowledge/Skills
Sea level is the elevation at the surface of the oceans and changes over time depending on how much water is at the poles
The ocean is wider than it is deep
Topography includes continental shelf, submarine canyon, continental slope, continental rise, abyssal plain, mid-oceanic ridge, guyot, trench, seamount, and transform fault
Oceans are salty because rocks on land weather and dissolved compounds are carried into ocean. Affects density
High tides when sun and moon line up. Low tides when sun and moon work against each other
Essential Questions
How do we describe the topography of the world's oceans?
How can we graphically represent the causes and effects of waves, currents, and tides?
What does sea level really mean?
Prior Knowledge
Students will have heard the term sea level and have the understanding that the closer it is to 0, the closer you are to the level of the sea.
Students will have heard about waves and currents and tides
Learning Activities
What does sea level really mean?
Google Earth activity where students must make their own trip and voiceover with what topography they are seeing in the ocean.
Ocean Topography
S6E6c:
Construct an argument evaluating contributions to the rise in global temperatures over the past century.
Essential Questions
What are the main greenhouse gases?
How do we measure greenhouse gases from hundreds of years ago?
How can we read climate change graphs?
Knowledge/Skills
Refresh Feedback loops
Permafrost is a positive feedback loop
Temperature anomalies show increases in temperatures recently
CO2 increasing rapidly in 20th and 21st centuries
Ice cores help us track trends in CO2, CH4, H2O, and oxygen isotopes
Obliquity is how much rotation axis tilts from plane
Precession is the rotational axis changing direction
Eccentricity is how elliptical or circular orbit is
CO2 concentrations significantly higher now than last 800,000 years
Also the rate of increase is dramatically higher
Prior Knowledge
Students will have opinions based on what their parents believe most likely but there will be a lot of misconceptions to get rid of
Learning Activities
Trends vs Variation
Ice Cores and Climate Change