Refraction
Convex or Concave?
Electromagnetic
Lucky Dip
100
The phenomenon that makes a pencil look bent when placed in a glass of water.
What is refraction?
100
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The point where the light converges.
What is the focal point?
100
The section of the electromagnetic field represented by the colour band.
What is visible light?
100
What part of a circuit allows you to have control over whether or not the conducting path is complete?
A switch
200
The refractive index is higher in the green object. My light will travel in this direction.
What is light beam C?
200
Produces an upside image?
What is a concave mirror?
200
Electromagnetic waves can travel through this, unlike sound waves.
What is a vacuum?
200
This food never spoils, even after thousands of years.
What is honey?
300
Most light travels through my surface. Only very little is reflected.
What is a translucent object?
300
This type of mirror curves outward and causes light rays to diverge.
What is a convex mirror?
300
The spectrum between infra-red radiation and ultraviolet radiation.
What is the visible spectrum?
300
This animal's fingerprints are so similar to humans' that they can confuse crime scene investigators.
What is a koala?
400
I reflect light on my mirrors to see around corners.
What is a periscope?
400
Used in traffic to see around corners.
What is a convex mirror?
400
These electromagnetic waves are used in night-vision goggles and thermal imaging cameras.
What is infrared radiation?
400
What type of mirror would a dentist use to look at your teeth?
Convex
500
This beam shows the path the light would take with no change in refractive index.
What is light beam B?
500
The reflected ray head this way on a convex mirror?
What is divergence?
500
These waves have the shortest wavelength in the spectrum.
What are gamma rays?
500
Oil has a greater one.
Which has a higher refractive index, oil or water?