Grade 4 : Standard 10 - Energy

Conceptual Strand 10

Various forms of energy are constantly being transformed into other types without any net loss of energy from the system.

Guiding Question 10

What basic energy related ideas are essential for understanding the dependency of the natural and man-made worlds on energy?

Grade Level Expectations

Checks for Understanding

State Performance Indicators

GLE 0407.10.1 Distinguish among heat, radiant, and chemical forms of energy.

GLE 0407.10.2 Investigate how light travels and is influenced by different types of materials and surfaces.

0407.10.1 Design an investigation to demonstrate how different forms of energy release heat or light.

0407.10.2 Design an experiment to investigate how different surfaces determine if light is reflected, refracted, or absorbed

0407.10.3 Gather and organize information about a variety of materials to categorize them as translucent, transparent, or opaque.

SPI 0407.10.1 Identify different forms of energy, such as heat, light, and chemical.

SPI 0407.10.2 Determine which surfaces reflect, refract, or absorb light.

SPI 0407.10.3 Determine whether a material is transparent, translucent, or opaque.

Lesson Plans

SPI 0407.10.1 Identify different forms of energy.

Activities (Go to Suggested Activities #2.) http://www.sasked.gov.sk.ca/docs/elemsci/gr3uhesc.html

 

Graphic Organizer

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SPI 0407.10.2 Behavior of Light

  1. Go over definitions for Reflection, Absorption, and Refraction.

     

    Reflection

     

    - bouncing of light off a surface

    Examples

    • looking in a mirror

    • bright snow on a sunny day

     

    The color of an object affects how much light is reflected. (white →→ most light reflected back out,
    black      →→  almost none is reflected back)

     

    		 Law of reflection
    Absorption - means the object takes in the light

    dark objects absorb much of the light

    		  
    Refraction

    - is the change in direction of light, change in speed caused the light to change direction or bend
     

    Examples

    • sun shining through a window

    • objects at the bottom of a lake appear to be in a different location than they really are

     

    		 Direction of bending

  1. Rainbow Applet http://mysite.verizon.net/vzeoacw1/rainbow.html & http://mathdemos.gcsu.edu/mathdemos/MCRain/MCRain.html

  2. Images of Refraction

    Refraction Pics http://lifshitz.ucdavis.edu/~dmartin/phy7/7C/Refraction/Refraction.html

    Converging rays Diverging rays  

  3. Video 321 Classroom Contact #24 Light and Color (15 minutes) & Video 321 Classroom Contact #26 Light Refraction (15 minutes)

  4. Experiments

Light Experiments

Using a flashing, mirror, prism, curved tin, etc. students conducted a number of light experiments.

 

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