Transcript Grade 10 Applied Science SNC2P - Optics-Concept

Grade 10 Applied Science
SNC2P
Physics: Light and Applications
of Optics
Quiz
Hook
What color are these words?
Concept Map
Curriculum
Connections
Big Ideas
• Physics
– A wide range of technologies utilize the
properties of light and colour.
– The behaviour of light depends on the
materials with which it interacts.
– Light is a form of energy, produced from a
variety of sources, and can be transformed
into other useful forms of energy.
Overall Expectations
• Analyse how properties of light and colour are
applied in technology and the impact of these
technologies on society.
• Investigate, through inquiry, properties of
light, and predict its behaviour in mirrors and
as it passes through different media.
• Demonstrate an understanding of
characteristics and properties of light,
particularly with respect to reflection and
refraction and the addition and subtraction of
colour.
Specific Expectations
• Relating Science to Technology Society,
and the Environment
– Analyse how additive and/or subtractive
colour theory are applied in technologies
used in everyday life
– Describe the role of selectetd optical
technologies in the transmission of
information, and lanalyse their impact on
society
Specific Expectations
• Developing Skills of Investigation and
Communication
– Use appropriate terminology related to light and
optics
– Use an inquiry process to investigate
the laws of
Inquiry:
reflection; use these laws to explain
the
Mirrors
characteristics of images formed by plane,
converging (concave), and diverging (convex)
mirrors; Fishing
and draw ray diagrams to illustrate their
Activity
observations
– Use inquiry process to investigate the refraction of
light as it passes through a variety of media
Specific Expectations
• Developing Skills of Investigation and
Communication (cont’d)
Lenses
– Predict the qualitative
characteristics of images
Activity
formed by converging
lenses, test their predictions
through inquiry, and draw ray diagrams to record
their observations
Colour
Wheel
– Investigate how various objects or media reflect,
transmit, or absorb light, and record their observations
using ray diagrams
– Predict the effect of shining a coloured light on objects
of different colours, and test their predictions through
inquiry
– Construct an optical device that uses a variety of
mirrors
Specific Expectations
• Understanding Basic Concepts
– Describe various types of light emisions and
how they produce light
– Identify and label the visible and invisible
regions of the electromagnetc spectrum, and
identify the colours that make up visible
white light
– Explain the laws of reflection of light, and
identify ways in which light reflects from
various types of mirrors
Specific Expectations
• Understanding Basic Concepts (cont’d)
– Describe qualitativetly how visible light is
refracted at the interface between two
different media
– Use additive colour theory to predict the
ressults of combining primary and
secondary light colours
– Use subtractive colour theory to describe
the effect of colour filters on white light
Specific Expectations
• Understanding Basic Concepts (cont’d)
– Explain how the colour of an object is
determined by reflection, absorption, and
transmission of colour
– Explain how the properties of light
or colour
Pinhole
are applied in the operation of anCamera
optical
device
Misconceptions
Please respond using iClickers
1. Light travels in straight
lines.
a) Obviously
b) Don’t be ridiculous
2. We can see the moon
because
a) the moon is a luminous object
b) the Man in the Moon left the lights
on…again
c) the moon reflects light from a luminous
object
d) the moon is white and the background
is black
3. When light is transmitted
a)
b)
c)
d)
Energy is lost as heat
Heat energy is created
Light consumes heat
None of the above
4. The red part of a stop sign
appears to be this colour
because…
a) red light is reflected
b) red light is absorbed
c) red pigments in the paint produce red
light
d) it is associated with danger and danger
is red
5. Our eyes detect images
a)
b)
c)
d)
Right-side up
Upside down
Inside out
Outside in
6. The primary colours are
a) Red, green and blue
b) Deep Space Sparkle, Razzmic Berry,
Metallic Sunburst
c) Cyan, yellow and magenta
d) Different if you’re talking about light
or if you’re talking about pigments
7. The word “clear” in optics
means the same as
a)
b)
c)
d)
translucent
colourless
transparent
opaque
8. The images we see in
mirrors
a) are produced by light from in front of
the mirror
b) come from behind the mirror
c) are real
d) do not capture the full scope of my
beauty
Safety
Considerations
• Light sources can become hot and
students should be advised not to shine
light in their eyes
• Mirrors and lenses can sometimes have
sharp edges or can break so they
should be handled carefully
• Many activities in optics require you to
have the lights out, this may not be a
great idea depending on the students
in your class
Key References
Demonstration
STSE