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Questions and Answers List

Question	Answer
AlQarayen School for Boys C2	Welcome
Vibrate in the direction perpendicular to its motion .	Light Wave
Vibrate in the direction parallel to its motion .	Sound Wave
Is the distance between one peak and the next in a wave.	Wave Length
Can travel in space.	Light Wave
Can`t travel in space.	Sound Wave
Red , Bue and green	Primary colors
What does the picture illustrates ?	Reflection
What does the picture illustrates ?	Refraction
Particles of light.	Photons
Doesn’t allow light to pass through them.	Opaque Objects
Allow light to pass through them.	Transparent Objects
Blur light that pass through them .	Translucent Objects
Its surface is curved in.	Concave Mirror
Its surface is curved out.	Convex Mirror
Change in the direction of light due to change in its speed.	Refraction
The Band of colors passing through a prism	Spectrum
Red , Green and Blue	Primary colors
The way in which electric and magnetic force interact.	Electromagnetism
A series of rarefactions and compressions traveling through a substance.	Sound wave
Bouncing of a wave off a surface.	Reflection
Number of vibrations per second	Frequency
Unit of measuring frequency	Hertz
The number of peeks in a sound wave	Pitch
The maximum displacement moved by particles of a medium from the rest position.	Amplitude
What does the picture illustrates ?	Concave Mirror
What does the picture illustrates ?	Convex Mirror