Page 9 - E book prim 4

Delta Modern Language Schools Unit (1) concept (3)
Science department
Grade 4
1st term 2024-2025

Light and sight

Human eye would need night vision goggles to see in the dark.

Structural adaptation in fishing cat:

 The fishing cat is one of the nocturnal animals that hunts for food at night.
 Its eyes seem to glow in the dark due to presence of mirror-like membrane.
 When the light enters the fishing cat’s eyes, it bounces (reflects) off this

membrane, allowing its eyes to collect more light.

Sources of light

The sun Electric lamp Fire Flash light Candle

Moon and mirror are not sources of light because they reflect the light.

light reflecation

shiny and smooth surface rough surface

(Mirror and metals) (Plastic – wood - cloth)
Reflect light better than the other materials Reflect light less than
the other materials

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