Light Unit Vocabulary

Let There Be Light

Exploring the concept of light and its significance in our world.

Vocabulary Words

• Light

• Transparent

• Translucent

• Opaque

• Reflection

• Refraction

• Lens

Multiple Choice

Which shows light energy?

• sun

• playing drums

• fire

• microwave

What is light?

definition: electromagnetic radiation that you can see.

Multiple Choice

Can we live without light?

• yes

• no

Objects can be...

1. Transparent
2. Translucent
3. Opaque

Transparent - see through

• Definition: a material that allows almost all of the light striking it to pass through, and through which objects can be seen clearly.

• Examples: Optical lenses, camera lenses, eyeglasses, windows, and display screens.

Multiple Choice

Which material is transparent?

• Glass

• Plastic

• Wood

Translucent

• Definition: a material that allows most of the light that strikes it to pass through, but through which objects appear blurry. You might see shadows.

• Examples: wax paper, plastic, tinted windows or glasses, curtains

Multiple Choice

Which material is translucent?

• Glass

• Plastic

• Wood

Opaque

• Definition: no light passes through.

• Examples: wood, metal, stone

Multiple Choice

Which material is opaque?

• Glass

• Plastic

• Wood

Reflective Surfaces

• Definition: no light passes through.

• Examples: mirrors, polished metals, and glass. These surfaces are used in various applications, such as in telescopes, headlights, and solar panels.
  
  

Reflective Surfaces

The world's largest reflective surface is the Salar de Uyuni salt flat in Bolivia, which spans over 4,000 square miles!

Multiple Choice

Which shows reflection?

Refraction

• Definition: no light passes through.

• Examples: lenses, prisms, microscopes, and other devices used for looking through and seeing images.
  
  

Multiple Choice

Which shows refraction?

Lenses

• definition: a transparent object with at least one curved side that causes light to change direction.

• Examples: camera, eye contacts, telescope, microscope

Multiple Choice

Which has a lens?

Draw

Write a vocab word or draw a picture about a vocab word you learned today.