Please enable JavaScript.
Coggle requires JavaScript to display documents.
P14 Light - Coggle Diagram
P14 Light
Reflection and Refraction of Light
Light travels at 300,000,000 m/s
Light travels in straight lines
Images formed in a mirror is a virtual image
Light can travel through a vacuum
Waves are only reflected from solids
The speed of light changes as it travels through different materials
Sound waves travel faster in solids than liquids
Refraction
Change in wavelength
Can be a change in the energy of the wave
Change in speed/velocity
The frequency of the wave does not change
Bending of waves as they go from one material/medium to another
Forming Images
Real images can be projected onto a screen
Virtual images appear to come from behind the lens
Images formed by concave lenses are always virtual
Images formed by convex lenses can be either real or virtual
Magnification
Images can be magnified or diminished
Images can be upright or upside down (inverted)
No units
Magnification = image height '/, object height
Lenses
Concave
Make parallel rays of light diverge
Curve inwards
Convex
Curve outwards
Make parallel rays of light converge at a point
A lens forms a image by refracting light