Este Quiz é cronometrado.
Você tem 10 minutos para completar as 10 questões deste quiz..
The number of waves per second is called the ____________________.
periodic time
velocity
wavelength
frequency
The time taken for one cycle to occur is called the _______________.
trough
When a wave hits an obstacle, it bounces back. This effect is called _______________.
diffraction
absorption
reflection
refraction
A wave changes speed and bends when it passes through a boundary or material. This effect is called _______________________.
The term 'pitch' is directly associated with which wave property?
amplitude
The loudness of a sound is directly associated with which wave property?
An ultrasound is a sound with frequency greater than ________________.
10 000 Hz
20 kHz
2 kHz
2 MHz
Sound travels more quickly through _______________ than ______________.
gases; liquids
liquids; solids
solids; gases
gases; solids
Which region of the electromagnetic spectrum has the longest wavelength?
ultraviolet rays
microwaves
radio waves
gamma rays
Which colours are in the order of increasing frequency?
orange, green, violet
violet, green, orange
blue, green, yellow
yellow, orange, red
