698490
Descrição
Quiz por kate.siena, atualizado more than 1 year ago
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Criado por kate.siena
mais de 10 anos atrás
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Questão 1
Questão
In a transverse wave the oscillations are perpendicular to the direction of energy transfer
Responda
- True
- False
Questão 2
Questão
Transverse waves cannot travel through a vacuum
Responda
- True
- False
Questão 3
Questão
Frequency is measured in...
Responda
-
Ohms
-
Hertz
-
m/s
Questão 4
Questão
When light enters a more dense medium it is refracted
Responda
-
towards the normal
-
away from the normal
Questão 5
Questão
Waves are not refracted if they are travelling along the normal
Responda
- True
- False
Questão 6
Questão
Which are true?
Responda
-
Electromagnetic waves are transverse
-
Sound are transverse
-
Some waves transfer energy
-
In longitudinal waves, there are compressions and rarefactions
-
In longitudinal waves, there are compressions and expansions
Questão 7
Questão
Which are uses for microwaves?
Responda
-
remote controls
-
sterilising surgical instruments
-
mobile phones
-
satellite television
-
bluetooth
-
security marking
Questão 8
Questão
Long exposure to electromagnetic waves can cause serious damage to cells in our bodies
Responda
- True
- False
Questão 9
Questão
What is the range of human hearing?
Responda
-
200 - 20000 Hz
-
20 - 2000 Hz
-
20 - 200000
-
20 - 20000Hz
-
200 - 2000 Hz
Questão 10
Questão
When waves are reflected, the angle of incidence = angle of refraction
Responda
- True
- False
Questão 11
Questão
What is the normal?
Responda
-
A line parallel to the reflecting surface at the point of incidence
-
A line perpendicular to the reflecting surface at the point of incidence
-
A line diagonal to the reflecting surface at the point of incidence
Questão 12
Questão
The Doppler Effect is a change in the observed wavelength and frequency
Responda
- True
- False
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