Question

match each model diagram with the corresponding model moon appearance
drag & drop the answer

Explanation:

To solve this matching problem, we analyze the model diagrams (right side) and the Moon appearance images (left side) based on the position of the light source (bulb) and the illuminated portion of the Moon relative to the Earth (hand - held circle).

Step 1: Analyze the first Moon appearance image (top - left)

The Moon has a partial illumination on the right - hand side. Looking at the model diagrams, we need to find the diagram where the illuminated part of the Moon (the circle with the black and white portion) is positioned such that the white (illuminated) part matches the observed Moon's illuminated part relative to the Earth and the light source. The fourth model diagram (bottom - right) has the Moon's illuminated part (white) in a position that would result in the observed Moon appearance. So we drag the first Moon image to the fourth empty box.

Step 2: Analyze the second Moon appearance image (top - middle left)

The Moon has a larger illuminated portion on the right. The first model diagram (top - right) shows a configuration where the illuminated part of the Moon relative to the Earth and the light source would produce this appearance. So we drag the second Moon image to the first empty box.

Step 3: Analyze the third Moon appearance image (middle - left)

The Moon appears mostly dark with a small illuminated part. The third model diagram (middle - right, third one down) has the Moon's illuminated part in a position that would lead to this appearance. So we drag the third Moon image to the third empty box.

Step 4: Analyze the fourth Moon appearance image (bottom - left)

The Moon is mostly illuminated. The second model diagram (second from top on the right) has the Moon's illuminated part in a position that would create this appearance. So we drag the fourth Moon image to the second empty box.

Answer:

The matching is done as follows:

• The first Moon image (top - left) is dragged to the fourth empty box (bottom - right model diagram).
• The second Moon image (top - middle left) is dragged to the first empty box (top - right model diagram).
• The third Moon image (middle - left) is dragged to the third empty box (third from top on the right model diagram).
• The fourth Moon image (bottom - left) is dragged to the second empty box (second from top on the right model diagram).