Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Compare a light aimed straight at a surface with one striking at a shallow angle. Predict how the lit patch stretches out and why angled light usually looks less intense on the surface.

Use what you learned in the previous lesson to solve real-world problems.

Use an object between a light and a surface to locate the blocked region. Predict shadow direction by drawing a line from the light through the object.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Compare shadows from a tiny source, like a small LED, with shadows from a broad source, like a window. Recognize why small sources make crisp edges and large sources make softer transitions.

Use what you learned in the previous lesson to solve real-world problems.

Move an object closer to the light and then closer to the surface to see how its shadow changes size and edge quality. Predict when a shadow will grow, shrink, sharpen, or blur.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Separate full shadow from partial shadow by tracing which parts of a large light source are blocked. Use umbra and penumbra to describe the dark center and the softer edge.

Use what you learned in the previous lesson to solve real-world problems.

Place the same light in front, beside, above, or behind an object and compare the visible shape it creates. Reason through how lighting direction reveals form, hides detail, or creates silhouettes.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Trace what happens when light hits a mirrorlike surface versus a matte surface. Predict whether the reflection keeps a clear direction or scatters broadly into the room.

Use what you learned in the previous lesson to solve real-world problems.

Use a wall, ceiling, or card as a bounce surface and predict where the reflected light will go. Recognize why bounced light often feels larger, softer, and less direct than the original beam.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Notice how one object can block another from receiving light even when the viewer can still see it. Use occlusion to explain dark pockets under shelves, faces, furniture, and overlapping shapes.

Use what you learned in the previous lesson to solve real-world problems.

Compare a narrow flashlight beam with light from a bare bulb or window. Predict which areas are lit, which are missed, and how beam direction changes the pattern people see.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Review this chapter with practice based on your mistakes.