Materials and Light

The word for an object that lets only some light pass through it and forms a light shadow is...

• Clear

• Transparent

• Opaque

• Translucent

Define Translucent

• A form of energy that can travel through space and can be seen by the human eye.

• Not transparent, but clear enough to allow rays of light to pass through.

• Clear and can be seen through.

• Not able to be seen through.

Define Light

• Clear and can be seen through

• A form of energy that can travel through space and can be seen by the human eye.

• Not able to be seen through.

• A material with little holes that allow materials such as gas, liquid, or small grains to pass through.

Define Opaque

• Not able to be seen through.

• Not transparent, but clear enough to allow rays of light to pass through.

• A material with little holes that allow materials such as gas, liquid, or small grains to pass through.

• Clear and can be seen through.

Describe this object.

• Opaque

• Transparent

• Translucent

• Dark

Which object could be considered transparent?

• Blindfold

• Sunglasses

• 3-D Glasses

• Glasses

Objects that are opaque have which characteristic?

• They let all light pass through.

• They do not cast shadows

• They let some light pass through.

• They let no light pass through and cast shadows.

Define Transparent

• Clear and can be seen through.

• A form of energy that can travel through space and be seen by the human eye.

• Not able to be seen through.

• Not transparent, but clear enough to allow rays of light to pass through.

A flashlight is used to shine light through four different materials. Which of the materials could be classified as opaque?

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• 
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Students put shapes made of four different types of materials in a sunny window. Which shape would be classified as translucent?

• Square

• Circle

• Triangle

• Diamond