U1 Lesson 3 Mini-Quiz Review 6th Grade

Why are there different kinds of models for how we see? Select TWO that apply.

• Each model has advantages and disadvantages. We use the model that best suits our needs at the time.

• As we learn more about the process of seeing, we are able to modify our models to include updated information.

• Different people see things differently and each person needs their own model for how they see.

• When given options, the best models are those with lots of color and images.

Which of the following describes the behavior of light coming out of a light bulb? Select THREE that apply.

• Light gets cooler as it moves away from the bulb.

• Light is traveling away from the bulb in all directions.

• Light is traveling in straight lines.

• Light is continuously traveling away from the light bulb.

Which of the following would you add to a checklist that you could use to evaluate scientific models? Select FOUR that apply.

• Accuracy: Does the model accurately represent the phenomenon?

• Consistency: Does the model account for all the evidence?

• Usefulness: Can the model be used to illustrate, explain, and predict new phenomena?

• Attractiveness: Does each part of the model have a color and clean lines?

• Key Ideas: Does the model include key parts and their relationships?

Which explanation uses the consensus model to explain why you cannot see your friend in the other room?

• The model demonstrated that a clear path between the object and your eyes is necessary in order to see an object. There is no path for light to travel between my friend and my eye because it is blocked by walls.

• According to the model, light travels in all directions. The view of my friend is blocked by walls.

• According to the model, light bounces off an object to your eyes. Light does not bounce off people so that is why I cannot see my friend.

What ideas did the light box help us to understand? Select TWO that apply.

• Light is continuously emitted in all directions from a light source and travels in straight lines.

• Models should communicate ideas and explanations clearly to others.

• Some light travels directly to the eye if there is an unblocked path.

• Some light bounces off an object and travels to the eye if there is an unblocked path.

The power is out at Kate’s house, so there are no lights. She wants to phone the power company to report the problem. First, she gets a flashlight. Which model best represents how light behaves so that Kate is able to see her phone and why?

• Model 2 best represents how the light will bounce off the phone to her eyes.

• Model 1 best represents how light from the flashlight reaches her phone and bounces off the phone in all directions. Some of the light reaches her eyes.

• Model 1 best shows how light bounces off objects in straight lines in all directions.

• Model 2 best shows how light bounces off objects in straight lines in all directions.