Light, sound science
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Which two parts of the eye refract light onto the retina?
Lens and cornea
The number of wave crests that pass a given point in one second is called the:
frequency measured in hertz
White light consists of:
all the colours of the rainbow
The amplitude of a sound wave is an indication of:
how loud or quiet the volume of sound is
Which part of the eye cannot change its size and shape?
cornea
A convex mirror can also be described as:
A diverging mirror
According to the law of refraction, light passing from air to glass will cause the light to
bend towards the normal
Which of the following types of waves has the shortest wavelength?
gamma rays
What is the electromagnetic spectrum?
A continuous range of wavelengths of energy.
the use of Radio waves
Radio, broadcast television signals, speed cameras, speed guns
Microwaves
Heating and cooking food, TV signals (over a large distance)
Infrared
Remote controls, heat transmission, night-vision cameras
Ultraviolet
Tanning beds, kill bacteria, fluorescent materials, detecting counterfeit money
Gamma rays
Treat cancer, sterilise medical equipment and/or food