Light And Lens Flashcards
(19 cards)
Name four types of waves
Microwaves, water wave sound waves light waves
How do you calculate frequency in what of the units?
Oscillations over seconds HZ
What are the two different types of waves and what are the definitions?
Transverse waves matter in the medium moves up and down, perpendicular to the directions that the waves move
Compression waves matter in the media moves, back-and-forth along the same direction that the waves travel
Describe the wave model of light
The wave model of light describes light as a wave that travels through empty space light energy is transferred from one location to another
According to wavelength, which colour has the most energy which has the least energy, how do you know?
Red has the leash because it has the largest wavelength. Violet has the most because it has the shortest wavelength.
What are the three primary colors?
The three auditive primary colours of light are red, green and blue
What colours are made by mixing the primary colors?
Blue and green makes cyan
Red and green makes yellow
Red and blue makes magenta
In the electromagnetic spectrum, which has the longest wavelength which has the shortest wavelength which has the most energy which has the least energy
Radio waves have the longest wavelength and gamma rays have the shortest radio waves have least energy and gamma rays have the most
What is the Ray model of light?
The Ray model of light uses straight line or ray to show the direction the light wave is travelling
What are the three types of materials and how does light behave when it hits these materials?
Transparent materials allow light pass through freely
Translucent materials let’s most light through but scattered the light leaving
Opaque materials prevent light from passing through
Describe how a shadow is made
A shadow was created with an opaque object. Absorbs light raise. Shadow shows light travels in a straight line.
Describe how reflection works
Reflection is created when light bounces off an object
What is the law of reflection?
The angle of incident is equal to the angle of reflection
Describe refraction
When light travels from one transparent medium to a transparent medium, it changes speed this change speed causes the light to change directions
What is a plain mirror and what happens to an image when it hits a plane mirror
Plain mirrors for an upright image and appears to be as far back as the object is in front of it left and right is reversed
What is a lens?
The lenses is a transparent material that can bend or refract light rice, and useful ways to help form a well focussed image
What happens when light is refracted in water?
Objects appear in a different location than they actually are. This is due to the fraction of light
 what happens to the reflected image in a convex mirror
Objects appear smaller than they are
What happens to the reflected image in a concave mirror?
Between one and two inverted larger at
focal no image
between one and mirror upright larger 
