Description

the increase or decrease in size of an image produced by an optical system compared to the true size
a converging lens
a lens that possesses at least one surface that curves inwards It is a diverging lens, meaning that it spreads out light rays that have been refracted through it
a line that is perpendicular to the light's wavefronts; its tangent is collinear with the wave vector
the angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense medium are no longer refracted but totally reflecte
the degree to which a refractive medium retards transmitted rays of ligh
a wave vibrating in the direction of propagation
a wave vibrating at right angles to the direction of its propagation
A substance that makes possible the transfer of energy from one location to another, especially through waves
the number of crests of a wave that move past a given point in a given unit of time
the time needed for one complete cycle of vibration to pass a given point
a vibration that propagates as a typically audible mechanical wave of pressure and displacement, through a medium such as air or water
the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge
combination of two or more electromagnetic waveforms to form a resultant wave in which the displacement is either reinforced or canceled
the point at which rays or waves meet after reflection or refraction, or the point from which diverging rays or waves appear to proceed
change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated
the angle made by a reflected ray with a perpendicular to the reflecting surface
the angle that an incident line or ray makes with a perpendicular to the surface at the point of incidence
a surface that is either plane, concave, or convex and that reflects rays of light.
a disturbance on the surface of a liquid body

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Chapter 18 Vocab

Crossword

Mirrors and Lenses

Crossword

LIGHT CROSSWORD

Crossword

Optics

Matching Quiz

Frequently Asked Questions

What is a crossword?

Crossword puzzles have been published in newspapers and other publications since 1873. They consist of a grid of squares where the player aims to write words both horizontally and vertically.

Next to the crossword will be a series of questions or clues, which relate to the various rows or lines of boxes in the crossword. The player reads the question or clue, and tries to find a word that answers the question in the same amount of letters as there are boxes in the related crossword row or line.

Some of the words will share letters, so will need to match up with each other. The words can vary in length and complexity, as can the clues.

Who is a crossword suitable for?

The fantastic thing about crosswords is, they are completely flexible for whatever age or reading level you need. You can use many words to create a complex crossword for adults, or just a couple of words for younger children.

Crosswords can use any word you like, big or small, so there are literally countless combinations that you can create for templates. It is easy to customise the template to the age or learning level of your students.

How do I create a crossword template?

For the easiest crossword templates, WordMint is the way to go!

Pre-made templates

For a quick and easy pre-made template, simply search through WordMint’s existing 500,000+ templates. With so many to choose from, you’re bound to find the right one for you!

Create your own from scratch

  • Log in to your account (it’s free to join!)
  • Head to ‘My Puzzles’
  • Click ‘Create New Puzzle’ and select ‘Crossword’
  • Select your layout, enter your title and your chosen clues and answers
  • That’s it! The template builder will create your crossword template for you and you can save it to your account, export as a word document or pdf and print!

How do I choose the clues for my crossword?

Once you’ve picked a theme, choose clues that match your students current difficulty level. For younger children, this may be as simple as a question of “What color is the sky?” with an answer of “blue”.

Are crosswords good for students?

Crosswords are a great exercise for students' problem solving and cognitive abilities. Not only do they need to solve a clue and think of the correct answer, but they also have to consider all of the other words in the crossword to make sure the words fit together.

Crosswords are great for building and using vocabulary.

If this is your first time using a crossword with your students, you could create a crossword FAQ template for them to give them the basic instructions.

Can I print my crossword template?

All of our templates can be exported into Microsoft Word to easily print, or you can save your work as a PDF to print for the entire class. Your puzzles get saved into your account for easy access and printing in the future, so you don’t need to worry about saving them at work or at home!

Can I create crosswords in other languages?

Crosswords are a fantastic resource for students learning a foreign language as they test their reading, comprehension and writing all at the same time. When learning a new language, this type of test using multiple different skills is great to solidify students' learning.

We have full support for crossword templates in languages such as Spanish, French and Japanese with diacritics including over 100,000 images, so you can create an entire crossword in your target language including all of the titles, and clues.