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Utah Science

Curriculum Consortium

Tyson Grover 

tgrover@dsdmail.net

Annette Nielson

afonnesbeck@dsdmail.net

Standard 8.2.5 : Develop and use a model to describe the structure of waves and how they are reflected, absorbed, or transmitted through various materials. Emphasize both light and mechanical waves. Examples could include drawings, simulations, and written descriptions of light waves through a prism, mechanical waves through gas vs. liquids vs. solids; or sound waves through different mediums.

 

Student friendly objectives:

I can develop a model to show the structure of a wave.

I can use a model to demonstrate how waves get reflected, absorbed, or transmitted through various materials.

 

In episode one the students will explore a phenomenon in which they pour water into an opaque bowl while watching the bowl from the side. As the water rises, the coin comes into view. Students will record observations about the phenomenon, ask questions about what they have observed and come up with a possible explanation for what caused their view of the coin to change. In episode two the students will use physical and computer models to identify patterns that occur when waves move from one medium to another. They will identify that waves change speed as they move through mediums of different densities and that while mechanical waves need a medium to travel, light waves do not. This will be followed by a variety of exploration activities in episode three in which the students investigate how the structure of light waves causes them to change when they move from one medium to another. They will experience reflection, absorption, transmission, and refraction.  They will develop a drawn model of each of these to demonstrate their understanding. Episode four will clarify their understanding of refraction, students will use models such as prisms and computer simulations to discover how the structure of a light wave causes a rainbow to form. Finally in episode five the students will conduct research to explain how humans use the reflective and refractive properties of energy waves for specific functions that benefit us; including lenses in eyeglasses and telescopes, soundproof rooms, periscopes, and probing the interior of the earth using seismic waves.  They will create a short video to present their findings and share them with the class.

Storyline Narrative 8.2.5

Bacon Pancakes

Episode 1

Question

How does water change the way objects look inside a container

Snapshot

Phenomenon: Students explore a phenomenon in which they pour water into an opaque bowl while watching the bowl from the side. As the water rises, the coin comes into view. Students record observations about the phenomenon, ask questions about what they have observed and come up with a possible explanation for what caused their view of the coin to change.

Conceptual Understandings

When water is present it alters the apparent position of objects in a container.

How do waves change when they move from one substance into another? What is a medium?

 

Conceptual Understandings

When waves move from one medium to another of a different density they change speed. Some wave need a medium to travel, some do not.

What are the different ways waves behave when transferred to a medium of different density?

Snapshot

Students use physical and computer models to identify patterns that occur when waves move from one medium to another. They identify that waves change speed as they move through mediums of different densities and that while mechanical waves need a medium to travel, light waves do not.

Episode 2

Question

How do waves change when they move from one substance into another? What is a medium?

 

Episode 3

Question

What are the different ways waves behave when transferred to a medium of different density?

Snapshot

Students engage in a variety of exploration activities to investigate how the structure of light waves causes them to change when they move from one medium to another. They experience reflection, absorption, transmission, and refraction.  They develop a drawn model of each of these to demonstrate their understanding.

Conceptual Understandings

Energy waves can be absorbed, transmitted, reflected, or refracted when transferred to a medium of a different density. Light travels in a straight line unless refracted.

How does refraction change light waves of different frequencies?

 

Conceptual Understandings

When white light is refracted it splits into individual colors because of the different energies of each color frequency.

How can humans use the reflective and refractive properties of waves?

Snapshot

To clarify their understanding of refraction, students use models such as prisms and computer simulations to discover how the structure of a light wave causes a rainbow to form.

Episode 4

Question

How does refraction change light waves of different frequencies?

 

Episode 5

Question

How can humans use the reflective and refractive properties of waves?

Snapshot

Students conduct research to explain how humans use the reflective and refractive properties of energy waves for specific functions that benefit us; including lenses in eyeglasses and telescopes, soundproof rooms, periscopes, and probing the interior of the earth using seismic waves.  They create a short video to present their findings and share them with the class.

Conceptual Understandings

Humans can use reflection, absorption, transmission and refraction to probe the interior of the earth, create lenses that help us see, and create rooms that amplify and dampen sound.