Embedded Files
Students will...
Students will...
PS.4.3 Understand the nature of light and how light interacts with objects.
PS.4.3.1 Carry out investigations to infer the path light travels from a light source to a mirror and how it is reflected (by the mirror) using different angles.
PS.4.3.2 Carry out investigations to explain how light is refracted and absorbed.
Waves & Their Applications
Waves & Their Applications
Vocabulary
Vocabulary
light
light source
reflection/reflect
absorption/absorb
ray or beam
straight
bounce off
redirect
change
medium
refraction
light source
to infer/inference
light path
Students will understand that...
PS.4.3.1
Students infer that light travels in a straight line.
Students know mirrors and other surfaces reflect light.
Students explain that to see objects
some light must be present to reflect off of the object
there is a path light travels from the light source, to the object, to the eye.
PS.4.3.2
Students explain light travels in a straight line until it strikes an object.
Students know that when light travels from one medium (air, water) into a different medium, the straight line of light changes direction slightly.
Students know that light can be refracted, and/or absorbed.
Students infer darker colors absorb more light than lighter colors.
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