Unit 05 · The Atmosphere & Weather
This unit builds the sky from the ground up: the layered structure of the atmosphere, the air masses that carry their source regions with them, the fronts where those air masses collide, and the pressure, temperature, and humidity that together decide what the day will do. Mastery means you can read a weather map as moving air masses and fronts — and hold the difference between today's weather and the climate that sets its bounds.
| Criterion | Not yet | Approaching | Mastered |
|---|---|---|---|
| Atmospheric structure | Cannot name the layers or thinks the air is uniform top to bottom. | Names the troposphere and above but cannot say what changes with height. | Describes how temperature, pressure, and composition change through the layers and where weather happens. |
| Air masses & fronts | Sees weather as random, unconnected to moving air. | Names the front types but cannot predict what each one brings. | Predicts the temperature, cloud, and precipitation changes as a cold, warm, or occluded front passes. |
| Pressure, humidity & clouds | Confuses temperature with pressure or humidity. | Reads each variable alone but cannot combine them. | Relates pressure, temperature, and humidity to cloud formation and reads the dew point off the data. |
| Weather vs. climate | Thinks weather and climate are the same thing. | States the difference but applies it inconsistently. | Distinguishes a weather event from a climate pattern and explains what each time-scale can and cannot tell you. |
| Lab technique (weather-station data & front tracking) | Records instrument readings carelessly or not at all. | Logs the data but cannot track a front through it. | Collects station data over time and tracks a front's approach and passage from the trends. |
| Integration (cross-domain) | Treats the science as isolated facts; makes no cross-domain connection. | Names a link to history, reading, or writing but cannot defend why it matters. | Connects the unit to its anchor across History · Reading · Writing (plus chosen electives) and defends why the connection matters. |
“The barometer’s falling and the wind shifted, so a cold front is coming — expect a quick line of storms, then cooler, drier air behind it. That’s today’s weather, though; one cold snap doesn’t tell you the climate, which is the pattern over decades.”
“Weather and climate are the same thing. High pressure means it’s hot. I just wrote down the numbers.”
You demonstrate this unit through weather-station data collection and front tracking plus short oral checks where you reason from the evidence aloud — not a multiple-choice test. A criterion counts as mastered only when you can both read the instruments and justify the forecast behind them. Mastery is demonstrated, not awarded.
A 5-page clipboard packet — unit overview, key terms, the mastery rubric, anchor examples, and a score sheet you can print and grade against.