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Introduction to Light and Optics

Science

Fundamental concepts of light, reflection, and shadows for elementary students.

optics physics light

15 Questions Easy Ages 5+ Oct 23, 2026

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About this Study Set

This study set covers Science through 15 practice questions. Fundamental concepts of light, reflection, and shadows for elementary students. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 15 questions from the Introduction to Light and Optics study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the primary source of light for Earth?

A The Moon
B The Sun
C Fireflies
D Streetlights

2 Which material allows light to pass through it clearly?

A Wood
B Cardboard
C Clear glass
D A brick wall

3 What is created when an object blocks the path of light?

A A reflection
B A shadow
C A rainbow
D A mirror

4 Which of these objects reflects light best?

A A cotton shirt
B A wooden table
C A smooth mirror
D A sponge

5 Light travels in what kind of path?

A A straight line
B A wavy line
C A zig-zag
D A circle

6 What happens when light hits a dark, dull surface?

A It reflects perfectly
B It is mostly absorbed
C It turns into sound
D It becomes invisible

7 Which of these is a source of light?

A A plastic toy
B A lit candle
C A rock
D A metal spoon

8 What do we call materials that block all light from passing through?

A Transparent
B Translucent
C Opaque
D Shiny

9 What is the separation of white light into colours called?

A Reflection
B Dispersion
C Absorption
D Shadowing

10 Which of these is a natural light source?

A A flashlight
B A lightbulb
C A star
D A television screen

11 What happens to light when it moves from air into water and bends?

A Reflection
B Absorption
C Refraction
D Polarization

12 What do we call the colour of light that has the longest wavelength in the visible spectrum?

A Red
B Blue
C Violet
D Green

13 Which of these objects produces its own light?

A The Moon
B A mirror
C The Sun
D A diamond

14 What is the term for light bouncing off a surface?

A Reflection
B Refraction
C Absorption
D Transmission

15 Which colour is created by mixing all the colours of the visible spectrum?

A Black
B White
C Grey
D Brown

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