Instructions
Read each section carefully and answer all the questions. Try your best and have fun exploring the world of light!
Part A: Choose the Correct Answer
Circle the letter of the best answer for each question.
- An object that lets ALL light pass through it, so you can see clearly, is called:
- A) Opaque
- B) Translucent
- C) Transparent
- Which of these objects is OPAQUE?
- A) A clear glass window
- B) A wooden door
- C) A pair of sunglasses
- A shadow is formed when light is blocked. Which object makes the DARKEST shadow?
- A) An opaque object
- B) A translucent object
- C) A transparent object
- Frosted glass, like on a bathroom window, is an example of a material that is:
- A) Transparent
- B) Translucent
- C) Opaque
- You can see a blurry shape through a _______ object.
- A) Transparent
- B) Opaque
- C) Translucent
- A brick wall is opaque because it...
- A) lets all light through.
- B) blocks all light.
- C) lets some light through.
- What is a magnifying glass made of?
- A) Transparent material
- B) Opaque material
- C) Translucent material
- If you hold a piece of cardboard up to a lamp, what happens?
- A) The light passes right through it.
- B) It makes a dark shadow.
- C) It makes a blurry, dim light on the other side.
- Which of these is TRANSPARENT?
- A) Clean air
- B) Fog
- C) A rock
- Sunglasses help protect our eyes. They are a good example of a _______ material.
- A) Opaque
- B) Transparent
- C) Translucent
Part B: Match the Object to its Type
Draw a line from each object in Column A to the correct word in Column B.
| Column A (Object) | Column B (Type of Material) |
|---|---|
| 1. Wooden Door |
Transparent Translucent Opaque |
| 2. Clear Glass Bottle | |
| 3. Tracing Paper | |
| 4. A Human Body | |
| 5. Wax Paper | |
| 6. A Magnifying Glass | |
| 7. Cardboard Box | |
| 8. A Stone | |
| 9. A Brick | |
| 10. Tinted Car Window |
Part C: Answer in Your Own Words
Write or draw your answers in the spaces provided.
- What does the word "Opaque" mean?
- Give two examples of TRANSPARENT objects you can find in your home.
- Why does an opaque object create a dark shadow?
- Look at the diagram below. Is the object Transparent, Translucent, or Opaque?
Light Source O ---> [ ????? ] ---> (Light is blocked!) X
- In the box below, draw a picture of the sun, a tree, and the tree's shadow. Make sure the shadow is on the opposite side of the tree from the sun.
(Draw here)
- What does the word "Translucent" mean?
- If you wanted to wrap a gift but give a small hint of what is inside, would you use transparent, translucent, or opaque paper? Why?
- Look at the diagram. Complete it by drawing how light passes through a transparent window.
Light Rays ===> [ A Glass Window ] ===> ???
- Give two examples of TRANSLUCENT objects.
- Why can't you see through a book?
Answer Key
Part A: Choose the Correct Answer
- C) Transparent
- B) A wooden door
- A) An opaque object
- B) Translucent
- C) Translucent
- B) blocks all light.
- A) Transparent material
- B) It makes a dark shadow.
- A) Clean air
- C) Translucent
Part B: Match the Object to its Type
- 1. Wooden Door → Opaque
- 2. Clear Glass Bottle → Transparent
- 3. Tracing Paper → Translucent
- 4. A Human Body → Opaque
- 5. Wax Paper → Translucent
- 6. A Magnifying Glass → Transparent
- 7. Cardboard Box → Opaque
- 8. A Stone → Opaque
- 9. A Brick → Opaque
- 10. Tinted Car Window → Translucent
Part C: Answer in Your Own Words (Sample Answers)
- What does the word "Opaque" mean?
It means an object that does not let any light pass through it. You cannot see through it at all. - Give two examples of TRANSPARENT objects you can find in your home.
A drinking glass, a window, a light bulb, clear plastic wrap. (Any two are correct) - Why does an opaque object create a dark shadow?
Because it blocks all the light from passing through, so the area behind it is dark. - Look at the diagram below. Is the object Transparent, Translucent, or Opaque?
Opaque. - (Drawing of a sun, a tree, and a shadow)
The drawing should show a sun on one side of the tree and a shadow on the ground on the opposite side. - What does the word "Translucent" mean?
It means an object lets some light pass through, but you can't see clearly. Things look blurry. - If you wanted to wrap a gift but give a small hint of what is inside, would you use transparent, translucent, or opaque paper? Why?
Translucent paper. Because it would hide the gift a little, but you could still see the colors or shape inside. - Look at the diagram. Complete it by drawing how light passes through a transparent window.
The drawing should show the light rays continuing straight through the window. (e.g., Light Rays ===> [ A Glass Window ] ===> Light Rays) - Give two examples of TRANSLUCENT objects.
Sunglasses, frosted glass, wax paper, tracing paper, a thin piece of paper. (Any two are correct) - Why can't you see through a book?
Because a book is opaque. It is made of thick paper that blocks all the light.