Landform types

Layered cliffs, mesas and deeply incised valleys of the Grand Canyon in evening light. — Grand Canyon from Hopi Point, Arizona. Resistant beds form steps and cliffs above valleys cut by running water.

A suggested lesson sequence

Use these stages at your own pace. Pause for students to sketch, compare observations or lead part of the demonstration.

01
Observe
Compare Mountain with Plain at the common scale. Distinguish elevation from local relief.
Open Observe
02
Tinker
Replace Plain with Plateau and explain its high flat surface. Compare Hill and Basin, then rotate both.
Open Tinker
03
Explain
Why is elevation alone insufficient to distinguish a plateau, a mountain and a plain?
Open Explain
04
Check
Choose an answer and explain your reasoning. Each question includes feedback.
Open Check

Rehearse with the model

The same scene and controls as the lab. Load it when you are ready; use Start projector for the full classroom view.

Before the lesson

Compare the elevation and shape of mountains, hills, plateaus, plains and basins using a shared scale.

Open the model before the lesson and choose a view that makes the important feature easy to see. Drag to rotate, and use the on-screen controls to change one variable at a time. The Controls panel explains the available keyboard shortcuts.

Ask students to predict the result before you change a setting. Compare the new view with the starting state.

Guide the demonstration

Compare Mountain with Plain at the common scale. Distinguish elevation from local relief.

Replace Plain with Plateau and explain its high flat surface. Compare Hill and Basin, then rotate both.

Discuss a common misconception

“A landform’s shape tells us which single process created it.” A landscape can record several processes acting at different times. A river may occupy a valley widened by ice, while rock structure influences both erosion and slope failure. Shape provides clues, but interpreting the history also needs evidence such as sediments, rock relationships and chronology.

Build the explanation

Elevation, relief, slope and shape describe different properties of terrain. A plateau can stand high above sea level while remaining relatively flat, and a basin is defined by its lower position relative to nearby land.

Replace Plain with Plateau and explain its high flat surface. Compare Hill and Basin, then rotate both.

The five terrain samples use a shared scale for comparison; shape alone does not establish the process or rock type that formed a landscape.

Teaching notes

Use landform categories to organise observations without treating them as universal rules with sharp boundaries.

Distinguish a canyon cut into a landscape from a mountain range raised by tectonic processes.

Explain that the distinction between a hill and a mountain does not have one universally accepted height threshold.

Check understanding

Open Check for 4 questions. Ask students to explain their choice before revealing the answer.

Return to the opening photograph. Ask students to identify one visible feature and explain which part of the model helps account for it.

Look more closely

Use these observations to connect the vocabulary to features students can identify.

Mountain

Snow-covered Himalayan peaks and valleys photographed from the International Space Station. — The Himalaya from the ISS: crust shortened and thickened as India collided with Eurasia.

Read the definition

Hill