The students needed to communicate that the same amount of light reaches the wall regardless of the distance the flashlight is from the wall. They may or may not have included the idea that the light becomes more or less spread out. On average, fewer than one-fourth of the students across countries correctly answered this item. A common misconception, identified by more than 30 percent of the student responses, was that a larger area of illumination means there is more light. A flashlight close to a wall produces a small circle of light compared to the circle it makes when the flashlight is far from the wall.
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No Yes Explain your answer. The chemistry items measured students' knowledge of topics related to chemical transformations as well as the chemical properties and classification of matter. The item below measured knowledge about the chemical make-up of cells. All rights reserved.