Human Body, Vision, and the Brain

Shelly has an idea for a new superhero that she’s calling “The Muscle.” Shelly tells you: “The Muscle doesn’t have a skeletal system - they have no bones! Because they don’t have any bones to get in the way, The Muscle is super strong. When The Muscle meets supervillains, they always win the battle and survive." Do you agree with Shelly that The Muscle would be a strong superhero? Do you think they would survive a battle with a villain? Why or why not? Support your argument with reasoning.

Jacob wants to make an eye model. He has a magnifying lens, a flashlight, a piece of paper, and a donut. How should Jacob arrange these objects to make an eye model? In a real eye, light travels through the corneal lens, goes through the pupil, and reaches the retina at the back of the eye.
Flashlight
Magnifying Lens
Donut
Paper

In the picture, Shira is using a model of an eye to get an image of a tree on the model retina. Draw arrows that show the path that light would take to get the image onto the model retina.


In the picture, there is a sleeping cat and a model of a human that shows the brain and connected nerves (the nervous system). Drag and drop the correct description to each step of what happens to the human when the cat starts purring.


In the picture, there is a sleeping cat and a model of a mouse that shows the brain and connected nerves (the nervous system). Match each step with the description of what happens to the mouse when the cat starts purring.
| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
Brain makes a decision to run away from the cat. | arrow_right_alt | 1st |
Sound travels and enters the mouse ear. | arrow_right_alt | 2nd |
Brain sends a message to the nerves of the legs and feet to run away from the cat. | arrow_right_alt | 3rd |
Nerves send a message to the brain. | arrow_right_alt | 4th |
Humans and mice both receive the information “purring cat” through their senses.
Humans and mice both process the information of “purring cat” in their brain.
Humans and mice both respond to the information of “purring cat” in the same way.

Draw a model of your animal or plant that shows how it uses its parts as a system to sense and respond to something in its environment. Add symbols and captions to explain your model.
In the picture, if the tree image on the model retina is blurry and fuzzy, what is something that Shira could do to make the image crisp and clear?