SCIENCE - ASTS 2 - KELAS 3

Which materials allow nearly all light to pass through them?

• Transparent

• Opaque

• Translucent

Light cannot pass through a dictionary. Why is this?

• Because a book is opaque.

• Because a book is transparent

• Because light travels fast.

• Because the book would be too heavy.

Which materials allow some light to pass trough them?

• Transparent

• Translucent

• Opaque

Which objects are considered transparent? . . .

(More than one answer)

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Materials can be grouped as transparent, translucent or opaque. Draw a line to match each object to the correct property.

Answer explanation

An opaque object does not allow any light to pass through it.

• True

• False

Answer explanation

This statement is true. An opaque object does not allow any light to pass through it; it blocks light completely. 

When light hits an opaque object, most of it is either reflected or absorbed, preventing any light from transmitting through the object. 

You can see through a translucent object clearly because it allows nearly all light to pass through.

• True

• False

Answer explanation

Translucent materials allow light to pass through them, but the light is scattered in many directions, so you cannot see clearly through them. This is different from transparent materials, which allow light to pass through without scattering, allowing you to see clearly.

A shadow is always of the same size as the object.

• True

• False

Answer explanation

This statement is false; a shadow is not always the same size as the object, as the size of a shadow depends on the position of the light source relative to the object, meaning it can be larger or smaller depending on the situation. 

Explanation: The shape of a shadow is determined by the object's shape, but the size can vary depending on the distance between the light source and the object. 

Shadows are formed when light passes through an object.

• True

• False

• Shorter

• Taller