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GCSE AQA 3.1.3.3 · 15 minutes · no login

Glacial landforms

All teacher notes · Open the lab · 2042 words · ·

Field photograph or official scientific figure for teaching glaciers. A second photograph for the projector script — not the lab cover. Source: Wikimedia Commons / NASA / USGS / NOAA, public domain or CC.Wikimedia Commons / NASA / USGS / NOAA, public domain or CC

Why this lesson, and why the 3D

Glacial landforms is a fifteen-minute projector lesson, not a homework packet and not a film with a quiz bolted on. Put this hook on the board before you dim the lights: Ice is a river that can be a kilometre thick. It leaves a cirque, an arête, a horn, a U, and a pile of till. By the end of the slot a pupil should be able to name cirque, arête, horn, U-trough, moraines and play ice advance/retreat. Curriculum tags in the header (GCSE AQA 3.1.3.3; NGSS MS-ESS2-2) are filters, not a flag. The room is worldwide; SI first; International English. Ages on the card (KS3, GCSE, NGSS MS) are a suggested band, not a gate.

Ice is a river that can be a kilometre thick. It leaves a cirque, an arête, a horn, a U, and a pile of till. The Lake District and Snowdonia are the UK pair: Helvellyn’s Red Tarn, Striding Edge, Crib Goch, cwms eating a ridge. Yosemite is the US pair: a deeper U in granite, hanging valleys, Half Dome, moraines down-valley. Same ice logic, different rock and a different poster. GCSE AQA 3.1.3.3 and NGSS MS-ESS2-2 both need U versus V, and the honesty that Yosemite is not a river canyon like the Grand Canyon. Glaciers exist where snow survives the year — latitude and altitude — not only at the poles. A UK upland trough with a beck in the floor is ice first, water second.

The 3D is a named, inspectable object. Click the part, not a caption. If the model will not spin, the Why panel still carries the mechanism, the two photographs, and the film. Do not apologise for the model. Drive it. A silent spin teaches a screensaver. A named mesh that changes under a slider teaches the process.

Fifteen minutes on the projector

Labels off. Name cirque, arête, horn before you reveal. Cirque is the armchair. Arête is the knife between two cirques. Horn is three or more eating a peak. Advance the ice. The U-trough deepens. Retreat to the snout. Moraines dump till. Ice versus water: U versus V. Yosemite is not a river canyon like the Grand Canyon. Glaciers do not only exist at the poles. They exist where snow survives the year. Latitude and altitude. That is the misconception. Lake District and Yosemite are the pair. Snowdonia’s Crib Goch is an arête you remember with your hands. Vertical exaggeration is ×6. Ice has thickness; it is not a white sticker. Till is the pile. The landform names are the scar. Finish in Check.

Open the lab full screen (F). Labels on (L). Speak the first step before you touch a slider: Cirque armchair, arête knife, horn peak. Then the second: Play ice: U-trough deepens. Moraines dump at the snout. Then the third: Ice vs water: U vs V.

Time, labels, and T (true scale) are the whole desk. Play walks the process; T removes the vertical lie where one was drawn. Space plays; arrows nudge time; R resets. Parameters the URL can remember: t, labels, true scale. If you only have eight minutes, skip the last step and finish in Check. Projector layout (P) is for the back row: one idea, large type, the model still live.

Labels off. Name cirque, arête, horn before you reveal. Cirque is the armchair. Arête is the knife between two cirques. Horn is three or more eating a peak. Advance the ice; the U-trough deepens. Retreat to the snout; moraines dump till. Keyboard: space, arrows, L labels, R reset. Vertical exaggeration is ×6; ice is thick, not a sticker. Till is the pile. The landform names are the scar. Finish in Check. Yosemite is not a river canyon like the Grand Canyon. Lake District and Yosemite are the pair.

The in-site film is “What Are Glaciers? Crash Course Geography #23” (Crash Course Geography, about 11 min, Crash Course / Complexly on YouTube. Standard YouTube licence. Educational embed, autoplay off.). Autoplay is off. Play one minute if you need a second voice; do not let the film eat the slot. The 3D still has to move under your hand.

What the third row will get wrong

You will hear the misconception before you have finished the first sentence. Write the false claim on the board and leave it there until the model has contradicted it. Do not skip this. A fluent pupil can recite the hook and still believe the false sentence.

“Glaciers only exist at the poles.” — no. They exist where snow survives the year. Latitude and altitude.

“Yosemite is a river canyon like the Grand Canyon.” — no. Yosemite is ice in granite — a U. Grand Canyon is a river in a plateau. Cross-profile tells them apart.

“Ice is a white sticker on a hill.” — no. Ice is a thick river. It has thickness. Vertical exaggeration here is ×6 and labelled.

Pitfalls to keep in your pocket: Calling Yosemite a river canyon like the Grand Canyon. Teaching glaciers as polar-only. Drawing ice as a white sticker with no thickness. Do not let a pupil leave thinking the 3D is a photograph. It is a teaching model. Where vertical exaggeration exists, T collapses it and the caption says so. A labelled lie of scale is honest. An unlabelled one is a cartoon.

Two places, not a slogan

A cirque (cwm, corrie) is an armchair hollow with a steep backwall. Two cirques eating a ridge leave an arête, a knife. Three or more eating a peak leave a horn, a pyramidal peak. Ice overdeepens a wide floor: a U-trough, truncated spurs, hanging valleys that dump waterfalls. Till is dumped as moraines — lateral, medial, terminal — at the ice margin. A drumlin is a streamlined till hill. Play advance: the tongue thickens and the U deepens. Play retreat: the snout dumps the pile. Ice versus water is U versus V. Yosemite is ice in granite; the Grand Canyon is a river in a plateau; do not swap the names. Vertical exaggeration is labelled ×6. Ice has thickness; it is not a white sticker on a hill. The tongue is a classroom glacier, not a traced ice stream. Lake District ice is mostly gone; the landforms remain. Yosemite’s glaciers are remnants; the valley is the scar. Glaciers are not only polar. They exist where snow survives the year. Abrasion and plucking do the cutting; freeze–thaw helps the backwall. A hanging valley is a tributary trough left high when the trunk ice overdeepened. That is why Yosemite Falls start in mid-air.

The first place to land is Lake District. The second is Yosemite. Same process, different rock or climate. If a pupil can only name one place, they have a postcard, not a mechanism. Atlas entries for those names are a click from the case list; send them back to the lab with one sentence they can say in Check.

Do not flatten the comparison into “this country versus that country.” Name the landform. Holderness is till, not chalk. Hawaii is a hotspot, not an island arc. Yosemite is a glacial trough, not a river canyon. The 3D is allowed to be schematic; the place names are not allowed to be sloppy.

Figures and the film

Field photograph: A valley glacier in a U-trough. Ice as a tool. Credit: Wikimedia Commons, CC BY.

Mechanism photograph: Field photograph or official scientific figure for teaching glaciers. Field photograph or official scientific figure for teaching glaciers. A second photograph for the projector script — not the lab cover. Source: Wikimedia Commons / NASA / USGS / NOAA, public domain or CC. Credit: Wikimedia Commons / NASA / USGS / NOAA, public domain or CC.

Two photographs, two jobs. The field picture is the place. The mechanism picture is the process. Do not run the lesson on a single Apollo Earth disc. A carbon-cycle class is a forest and a seam, not a blue marble. An ENSO class is a Pacific temperature map, not Africa from Apollo 17.

Words they must be able to say

Say these out loud once while you click the matching mesh. If a word has no mesh, it still has a photograph in Terms.

Cirque: Armchair hollow with a steep backwall. Exam language also accepts “Cwm / corrie”. Arête: Knife ridge between cirques. Horn: Pyramidal peak eaten by three or more cirques. U-trough: Wide floor and steep walls overdeepened by ice. Exam language also accepts “Glacial trough”. Moraine: Till ridge dumped by ice at the margin. Till: Unsorted debris dropped by ice. The pile. Hanging valley: A tributary trough left high when the trunk ice overdeepened. Drumlin: Streamlined till hill, blunt up-ice, tapered down-ice.

Exam-language toggle (the Teacher tab) swaps UK/US pairs where they exist — levée/levee, arête/arete — so a mixed room is not punished for spelling.

Close the slot

Without the 3D view: ice is a thick river. Cirque armchair, arête knife, horn peak, U-trough, moraine pile. Ice versus water is U versus V. Lake District and Yosemite are the pair. Snowdonia’s Crib Goch is an arête you remember with your hands. Glaciers exist where snow survives the year, not only at the poles. Vertical exaggeration is ×6 and labelled. Ice has thickness. Do not call Yosemite a river canyon like the Grand Canyon. Till is the pile; the names are the scar.

Finish in Check — ten questions, not a mood. The bank mixes definition, process, the misconception you just killed, a named place, and a read-the-model item (click the part; T). If a pupil can only recite the hook, they have not used the geometry. Wrong answers still show the one-line explain. Do not skip the explain.

Sources on the Teacher tab are the trail, not a bibliography to copy. BGS glaciation; NPS Yosemite.

Link back to the live lab and keep the same slug. Do not invent a parallel worksheet that contradicts T, SI, or the named parts.

This note is worldwide. Curriculum tags (GCSE AQA 3.1.3.3; NGSS MS-ESS2-2) are filters, not a flag. A class in Nairobi, London, or Shanghai can use the same 3D. Ages (KS3, GCSE, NGSS MS) are a suggested band. If a sentence only works in one exam board, rewrite it before you project it.

Write these three lines on the board before you dim the lights. One: Ice is a river that can be a kilometre thick. It leaves a cirque, an arête, a horn, a U, and a pile of till. Two: the misconception “Glaciers only exist at the poles.”. Three: the named parts they must click. Then drive the model. Check is ten questions covering definition, process, the misconception, a place, and a read-the-model item. Do not skip the explain on a wrong answer.

Board, units, and what not to say

SI first. Metres, kilometres, degrees Celsius, metres per second. A conversion in brackets is courtesy, not a second system. Do not let a pupil leave thinking the 3D is a photograph. It is a teaching model. Where vertical exaggeration exists, T collapses it and the caption says so.

Do not say “teaching mesh”, “sprinkle”, or “thin free surface not a fat pipe” out loud. Say the landform. Seasons are ~23.44° of axial tilt, not Earth–Sun distance. The outer core is liquid; S-waves do not pass. Yosemite is a glacial U-trough. San Andreas is a transform. Hawaiʻi and Yellowstone are hotspots. Florida is not a glacial trough.

If the room is noisy, projector layout (P) is the back-row setting: one idea, large type, the model still live. Full screen (F). Labels (L). Space plays. Arrows nudge time. R resets. The URL can remember t, labels, true scale. Send them home with the same link; there is no login.

In-site film

What Are Glaciers? Crash Course Geography #23. Crash Course Geography. Crash Course / Complexly on YouTube. Standard YouTube licence. Educational embed, autoplay off. Autoplay off.