This document provides an overview of key concepts about light for a 5th grade science unit on energy. It defines light as a form of energy that can be seen, and discusses the visible spectrum. It identifies the sun and stars as natural light sources and electrical lamps and candles as artificial sources. The document explains that light travels in straight lines, and how this allows for the formation of shadows and the inverted and minimized images seen through pinhole cameras.

1. Lesson (1)
Light
Grade
Five
Unit (1)
Energy

2. Objectives
1- Define the light
• 2-Define the visible spectrum
• 3-Classify sources of light
• 4.Properties of light
• 5.Explore light travels in straight lines
• 6.Explain how shadow is formed .

3.  1. Do you remember Energy ?
 - It is the ability to make things move or change
 2-Do you remember what is the sources of energy ?
 EX : Electric energy – sound energy – magnetic energy and Light energy .
 Hey there ! Its dark right ! What would we do without light ? !!
So lets talk about light and we will know why we need light !

4. LIGHT
-Light is one of the forms of energy
The light energy is the only source of energy that can
be seen
Light >> The source of energy that can be seen and
causes vision
The visible spectrum : It is the light energy which can be
seen

6. Sources of light
Natural
sources
Sun Stars
Artificial
sources
Electrical
lamps
Candles

7. Natural sources

8. Artificial Sources ( man-made )

9. G.V
1.The moon seems shiny . But it is not
considered a source of light .
Because moonlight is the reflection of the sunlight that
falls on its surface

12. Light travels in straight lines
Transmits through different
materials
Light reflection
Light refraction
Light separation
Properties of light

14. Light travels in straight lines

16. Phenomena that happen due to
light travel in a straight line :
1.Formation of an image through narrow holes
2. Formation of shadow

18. The image that formed is :
1. Minimized
2. Inverted
(The idea of making camera )

19. G.V
1. The image formed in pin-hole camera is inverted.
2. The formation of images through narrow holes.
Because light travels in straight lines

20. Evaluation
Complete :
1.The formation of image through narrow holes depends in
…………….
G.V the moon is not considered as source of light .

21. H.W
Do the activity that prove the formation of an image
through narrow holes and write your observation