Ray Model of Light Flashcards
WHAT ARE THREE THINGS LIGHT CAN DO WHEN IT STRIKES A SURFACE?
- can be transmitted
- can be reflected
- can be absorbed
WHAT IS A TRANSPARENT OBJECT?
an object where light passes through, see through
WHAT IS AN OPAQUE OBJECT?
an object where most light is absorbed or reflected (cannot see through)
WHAT IS A TRANSLUCENT OBJECT?
an object where light is transmitted, but scattered in all directions
GIVE AN EXAMPLE OF A TRANSPARENT OBJECT
e.g glass, plastic wrap, air,
GIVE AN EXAMPLE OF AN OPAQUE OBJECT
e.g apple, pear, human, pencil, MIRROR
GIVE AN EXAMPLE OF A TRANSLUCENT OBJECT
e.g frosted glass, wax paper, clouds
WHAT ARE THE DIFFERENCES BETWEEN REFRACTION AND REFLECTION?
Refraction- bending of light as it passes through a medium
Reflection-When light bounces off a surface
WHAT ITS THE LAW OF REFLECTION?
when light reflects from a flat mirror, the angle of incidence equals the angle of reflection
WHAT IS THE INCIDENT RAY
the ray that strikes a mirror
WHAT IS THE REFLECTED RAY
the ray that bounces off a mirror
HOW IS LIGHT REFRACTED WHEN TRAVELLING FROM AIR TO WATER?
it bends towards the normal and slows down
HOW IS LIGHT REFRACTED WHEN TRAVELLING FROM WATER TO AIR?
it bends away from the normal and speeds up
