Name
Light and light sources
Topic
Physics
Learning time
1 hour and 30 minutes
Designed time
1 hour and 30 minutes
Size of class
20
Description
Description The topic of this lesson is related to these big and beautiful ideas of science: 1.Study natural sources of light and light bodies, were always in the attention of physicists. 2. Our solar system is a very small part of one of millions of galaxies in the Universe. Our Sun and eight planets and other smaller objects orbiting it comprise the solar system. Day and night and the seasons are explained by the orientation and rotation of the Earth as it moves round the Sun. The solar system is part of a galaxy of stars, one of many millions in the Universe, enormous distances apart (calculated in light years), many of the stars having planets. 3.Objects can affect other objects at a distance Some objects have an effect on other objects at a distance. In some cases, such as light, the effect is through radiation which travels out from the source to the receiver.
Mode of delivery
Classroom-based
Aims
Students will find out about light, about light sources/light travelling through space.
Outcomes
Comprehension, Knowledge, Application, Affective learning outcomes
Editor
Gabriela88
Edit
Activity 1-Evocation/Anticipation (group interview))
40 minutes)
  • Read Watch Listen
    10
    20
    0
    We will begin with an quiz to evoke notions about light and the cosmos pupils already know. Quizz Question 1 of 10: There are eight(or nine) .................... in our Solar system. Question 2 of 10: One of the planets, ..................., has the largest ring system around it. Question 3 of 10: ............................... of the Sun is about 5500 Celsius degrees. Question 4 of 10: The Moon is the only natural ..................... of the Earth. Question 5 of 10: The......................of light is 300000 km/s, the largest known in the whole universe. Question 6 of 10: When the Moon interfere between the Sun and the Earth, a Solar ......... ... occures. Question 7 of 10: The first man on the Moon was Neil ................... Question 8 of 10: Huge groups of planets, stars and satellites are called............................. Question 9 of 10: Our galaxy is named the ..... Way Question 10 of 10: The light travells the .........................between the Sun and the Earth in 8 minutes. 1punct each question Total 10 points
  • Investigate
    15
    20
    0
    Next I propose to my students: - To observe, by viewing the videos, drawings, photographs, images of cosmic bodies (stars, planets, satellites ,Moon) and optical phenomena in the cosmos products (eclipses, lunar phases, the alternation of day and night), in contrast to the dark cosmic space, the dark sky); I’ve chosen resources on: https://www.youtube.com/watch?v=WjuA4G0IQ4Y&index=22&list=PLF2DA41E7AEF347C6 https://www.youtube.com/watch?v=eKc84Uq8iy0&list=PLF2DA41E7AEF347C6&index=1 https://www.youtube.com/watch?v=3vmzcUG9Y3g&index=11&list=PLF2DA41E7AEF347C6 https://www.youtube.com/watch?v=xg7tG5IFf-o&list=PLF2DA41E7AEF347C6&index=17
  • Discuss
    15
    5x4
    0
    Communicate observations / findings; Examples of findings: -some celestial bodies remain invisible to humans if not lit, if interposed between the source and the observer or if scatter / reflected beam / light rays by observers on Earth (sun or moon during the eclipse of the Sun during the eclipse of Moon ). -not all cosmic bodies emit light / are light sources; we can not see the beams / rays of light that propagates through space / free bodies, but we can distinguish course / path using sunlit bodies (Moon, planets, satellites of the Earth, etc.)
Notes:
Resources linked: 0
Activity 2- Realisation
50 minutes)
  • Practice
    20
    20
    0
    Exploration /Experimentation/ (Group Investigation) - To observe experimentally the propagation of beams / rays through various environments, highlighting the visibility of light beams: a) during the propagation through transparent media (such as produced by a pointer light propagation through the air, the water from a tank; b) the scope of the opaque bodies (eg deviation / light scattering / reflection of light on objects, walls, mirrors, water surface - wall observing the light spot of reflected laser pointer with water from a tank, light propagation de- along the surface of a sheet of paper) c) during propagation through translucent medium (eg water from a tank where they put milk , smoke, steam, sun seen through the trees in the forest , clouds; -- Experimental observation of divergent light beams (produced by flashlight) and narrow beam produced by a laser pointer that propagate on the surface of a screen / a sheet of white paper, air, water.
  • Collaborate
    15
    5x4
    0
    The students divided in 4 groups post their findings on a Flipchart. Leaders group will present findings.
  • Produce
    15
    20
    0
    Activity 3 Explanation/Reflection (5 minute essay metacognitiv- feedback/discussion) - To observe experimentally the propagation of beams / rays through various environments, highlighting the visibility of light beams: a) during the propagation through transparent media (such as produced by a pointer light propagation through the air, the water from a tank, with a block of glass / -Communicate (in various ways: drawings, essays, evoking personal experiences, experiments) Comments / concepts and conclusions obtained. Once students expressed themselves in the essays stating whatthey found most interesting during the lesson, which facts corresponded to their expectations and what is totally different from their expectations, some of the essays are randomly chosen to be presented. Sample comments: we can not see the beams / rays of light that propagates through transparent media; we can see the light propagation through media containing particles / objects opaque spreader / reflected light by an observer; cosmic bodies / planets / moons etc. scatter sunlight around them; not all bodies forming light shade; shadows can form opaque or translucent bodies; particulate environments in transparent bodies around us helps us see how light propagates; Space is a transparent medium for light beams etc.
Notes:
Resources linked: 0

Learning Experience

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