Page 10 - E book prim 4

Delta Modern Language Schools
Science department
Grade 4
1st term 2024-2025

Types of materials

Transparent materials Opaque
materials
Materials that allow light to pass through it.
Things can be seen through them. Materials that don't allow light to
Examples: air – water – glass pass through it.

Things can't be seen through them.

They make shadow.
Examples: wood – rock – cloth

Firefly light show

How do firefly beetles use their senses to communicate?

 Fireflies use their wings to form different flash patterns to:
-Warn off other firefly beetles from predators.
- Attract a mate to reproduce.
 They flash at regular periods of time.

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