What are the three types of materials based on their ability to transmit light?

Transparent, translucent, and opaque. 

Fill in the blank: Opaque materials do not allow light to pass through, making it impossible to see through them. An example of an opaque material is ___.

wood or a book. 

Which type of material lets some light through but not enough to see through clearly?

Translucent materials.

Riddle: I allow you to see through me clearly and I'm often used for windows. What am I?

Glass. 

Fill in the blank: Liquids take the shape of their ___ when poured.

container    

What is an example of a natural material?

Wood from trees 

Which of the following is an artificial material? a) Wood b) Plastic c) Water d) Air

Plastic 

Riddle: I am everywhere but can’t be seen. I fill rooms and spaces and am often called 'air'. What am I?

Gas

Fill in the blank: Metals come from ___ extracted from the Earth.

ores 

What is the main difference between natural materials and artificial materials?

Natural materials exist in nature, while artificial materials are created by humans.

Fill in the blank: Some materials, like rubber and wax, can be both ___ and artificial.

natural

Which term describes materials that can break down naturally in the environment?

Biodegradable 

Riddle: I am a material you cannot see through at all, like a wall or a door. What am I?

Opaque material 

Multiple Choice: Which of the following is an example of a solid material? A) Water B) Air C) Wood D) Light

C) Wood