1-PS4-2: Illumination and Darkness
Make observations to construct an evidence-based account that objects in darkness can be seen only when illuminated.
Clarification Statement: Examples of observations could include those made in a completely dark room, a pinhole box, and a video of a cave explorer with a flashlight. Illumination could be from an external light source or by an object giving off its own light.
Assessment Boundary: none
Appearance (e.g. visible, not visible, somewhat visible)
- External light source (e.g. sun, flashlight)
- Internal light source (e.g. light bulb, glow stick)
Cause and Effect
Make observations to construct an evidence-based account that objects in darkness can be seen only when illuminated. (Cause and Effect)
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