StudyBrixFree worksheets, study guides and courses

Physics · Grades 1–4

Light and shadows

Study guide for Grades 1 to 4: 2 worked examples and 2 practice questions. Sort objects: does it make its own light? Does light pass through it (transparent) or is it blocked (opaque)?

Make a worksheet

Rule and key idea

Sort objects: does it make its own light? Does light pass through it (transparent) or is it blocked (opaque)?

light travels in straight lines; opaque objects block it

Worked examples

Which one lets light pass through so you can see clearly through it: clear window glass or a thick book?

Clear window glass is transparent: light passes through it. A thick book is opaque: it blocks light and can make a shadow.

clear window glass

Which one makes its own light: a flashlight that is on or the Moon?

A flashlight that is on gives off its own light. The Moon only reflects light that shines on it.

a flashlight that is on

Try two questions

  1. Which one makes its own light: the Moon or the Sun?

    1. the Sun
    2. the Moon

  2. Which one lets light pass through so you can see clearly through it: a thick book or clean water in a glass?

    1. a thick book
    2. clean water in a glass

Answers and reasoning

Answers and marking notes
  1. the Sun

    The Sun gives off its own light. The Moon only reflects light that shines on it.

  2. clean water in a glass

    Clean water in a glass is transparent: light passes through it. A thick book is opaque: it blocks light and can make a shadow.

How this page was made: written for StudyBrix with AI assistance from our own templates. Answers and worked examples are checked by automated tests, and grade bands are approximate, not an official curriculum alignment. See the editorial policy for corrections. Editorial policy