1. 3. Collaborative Learning
1.1. Think, Pair, Share: Disscuss the following questions
1.1.1. 1. What questions do you have about the evidence?
1.1.2. 2. How is the evidence connected to what you have been learning about what happens to light as it travels?
1.1.3. 3. How might the evidence help you answer the question about whether the crabs can see the plankton they eat near the ocean floor?
2. 4. Technology Supported Learning
2.1. Online Exit Ticket: Sorting Evidence
2.1.1. Open the Jamboard and choose page 1 if you support Claim 1 and choose page 2 if you support Claim 2. On the page you select, attach a sticky note with one piece of evidence supporting your claim and justify your choice.
3. Learning Objective: Students will be able to describe how light travels through ocean water by evaluating evidence cards.
4. 1.Whole Class Instruction
4.1. How Far Visible Light Transmits in the Ocean
4.1.1. Some color of visible light transmit farther down through ocean water than others. This affects how objects appear in the ocean
4.1.2. Example: The scyphozoan jellyfish and the vampire squid refelct red light. At the surface, they would appear red, but deeper in the water, they appear black. That's because red light doesn't transmit very far through ocean water
5. 2. Independent Learning
5.1. Students will be given two claims and eight evidence cards. They will read and annotate all evidence cards to see how they relate to how light travels and how they support or refute one or both claims
5.1.1. Question: Can the crabs see the plankton they eat near the ocean floor?
5.1.2. Claim 1: Yes, the crabs can see the plankton and the plankton appear (red, orange, yellow, green, blue, indigo, violet).
5.1.2.1. Evidence Card A: The crabs can see all colors of visible light as long as the light reaches their eyes
5.1.2.2. Evidence Card B: The crabs spend most of their time near the ocean floor. There are algae everywhere in the ocean, but on the surface above where the crabs live there is a large amount of algae
5.1.2.3. Evidence Card C : The plankton appear white at the surface because they reflect all colors of visible light. The plankton do not emit light.
5.1.2.4. Evidence Card D : The crabs are found near the coast, where, water absorbs red, blue, indigo, and violet light closer to the surface. Orange, yellow, and green light transmit farther toward the ocean floor.
5.1.3. Claim 2: No, the crabs can't see the plankton.
5.1.3.1. Evidence Card E: There is a species of fish that appears orange to scientists near the surface of the water, but it cannot be seen near the ocean floor where the crab is found.
5.1.3.2. Evidence Card F: Agae absorb red, orange, yellow, blue, indigo, and violet light.
5.1.3.3. Evidence Card G: Algae reflect green light. When light reflects, it can bounce off in any direction. It may or may not hit other algae.
5.1.3.4. Evidence Card H: For a material to appear a certain color, that color of visible light needs to reflect off the material into the eyes of the organism seeing it.