Classification of Materials

Front

What does it mean if a surface is smooth?

Back

A smooth surface allows easy sliding of hands or objects over it without friction.

Front

What are the bristles of a toothbrush like?

Back

The bristles of a toothbrush are rough to effectively clean our teeth.

Front

How can you classify candy?

Back

Candy can be classified by color, size, texture, or hardness.

Front

What does it mean if a material is hard?

Back

A hard material does not change its shape easily, like metal or wood.

Front

What is a characteristic of a soft material?

Back

A soft material can be easily compressed or deformed, like rubber.

Front

What is texture?

Back

Texture refers to the feel or surface quality of a material, such as rough or smooth.

Front

What is the difference between hard and soft materials?

Back

Hard materials maintain their shape and resist deformation, while soft materials can be easily changed.

Front

Can you give an example of a rough surface?

Back

An example of a rough surface is sandpaper.

Front

What is an example of a smooth object?

Back

An example of a smooth object is a glass table.

Front

What does it mean to classify materials?

Back

To classify materials means to group them based on shared characteristics like color, size, or texture.