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What is the law of reflection?
The law of reflection states that: angle of incidence i = angle of reflection r.
Which wave on the EM spectrum can be used in thermal cameras to identify people in the dark?
Infrared
Which wave on the EM spectrum can be used to identify broken bones?
X-rays
Which wave on the EM spectrum can cause skin to tan or burn?
Ultraviolet
Which waves on the EM spectrum have a longer wavelength than Infrared?
Radio and microwaves
Which wave on the EM spectrum has the highest energy?
Gamma
Derek the raver goes to a disco wearing blue trainers, what colour do they look in blue light? Why?
Blue, blue objects reflect blue light
Derek the raver goes to a disco a red hat, what colour does it look in blue light? Why?
Black, red hat absorbs blue light
Derek the raver goes to a disco wearing white gloves, what colour do they look in green light? Why?
Green, white gloves reflect green light
Red light has the longest wavelength, does it refract the least or the most?
Least
Red light has the lowest energy, does it have the longest or shortest wavelength?
Longest
Violet light has the shortest wavelength, does it have the highest or lowest energy?
Highest
What are the three primary colours?
Blue, Red, Yellow
What is the relationship between angle of incidence and angle of refraction?
They are not equal, but when you increase angle of incidence, the light refracts more, so higher angle of refraction
What happens to light when it goes from a gas through a solid?
Denser medium, slows down, changes direction (refraction)
Name one property of a mirror image
Appears to be behind mirror/correct way up/inverted
Which type of reflection does this image represent?
Specular
Which type of reflection does this image represent?
Diffuse
What is 'r'?
Angle of reflection
What is 'i'?
Angle of incidence
What is C?
Reflected ray
What is B?
The normal
What is A?
Incident ray
What happens to light when it hits an opaque surface?
Light will be absorbed or reflected
What happens to light when it hits a translucent surface?
Rays of light are scattered, only some passes through
What happens to light when it hits a transparent surface?
It passes straight through
Wood is an example of which type of surface?
 
Opaque
 
Transparent
 
Translucent
Frosted glass (e.g., bathroom window) is an example of which type of surface?
 
Translucent
 
Transparent
 
Opaque
Glass is an example of which type of surface?
 
Transparent
 
Translucent
 
Opaque
What is the speed of light in air?
300 000 000 m/s
How are light rays drawn?
A straight line drawn with a ruler and arrow to indicate direction
What type of a wave is light?
 
Transverse
 
Longitudinal
 
Mexican
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