6th gr Unit 1-2

When we look at a book in the sunlight, what must happen to the light for our eyes to see the book? 

• 1. The sunlight bounces off your eye and off the book.

• 1. You must be facing the sunlight.

• 1. The sunlight bounces off the book and enters the eye.

• 1. The book must be on the table so that the light can bounce off the table onto the book and into your eye.

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MS-PS4-2

A light sensor only detects light that comes from objects directly in front of it. The light has to bounce off the object or come from a light source and travel straight into the sensor.  

In your activity what patterns did you notice where brightness readings were higher or lower? Select 3 that apply.

• 2. When brighter, it was a smaller reading; when dimmer, it was a larger reading.

• 1. An object appeared brighter to my eyes when the reading on the sensor was greater and dimmer when the readings on the sensor were smaller. 

• 1. The brightness was higher when the sensor was closer to the light source.  

• 1. The brightness was higher when the sensor was pointed directly at the light source. 

How are shadows made? 

• 1. Turning the lights down in a room will create many shadows.

• 1. When you stand with your back to the sun you will get a shadow behind you.

• 1. An object blocks the path of the light which creates an area where no light reaches.

• 1. Turning the lights off will create many more shadows.

Use the light model to predict what a light detector would detect when pointing toward the shadowed area?

• 1. The light detector would not detect any light. No light reaches the shadowed area; therefore, no light is bounced from that area to the light detector.

• 1. Because light travels in all directions, the light detector would detect the same amount of light everywhere.

• 1. Light is constantly moving so the light sensor would constantly detect different amounts of light.

• 1. Light can bend around a corner so the light sensor reading would not change.

Which is the best explanation to the question, “How Does Light Allow Me To See?” 

• Four conditions must be met in order to see an object. There must be a light source and an object to see. Light travels in straight lines from the light source to an object.  There must be a clear path to the object you are trying to see. The light bounces off the object and  enters your eye through the pupil, where it is absorbed by the retina and a signal is sent to your brain.

• 1. In order to see an object you must have an eye, a light source, and an object. The light bounces off the object and into your eye where the brain interprets what you see.

• 1. If you do not have light, you will not be able to see. When it is dark no light can enter your eye, like what we saw using the light box. You also need to not have anything blocking your eye and the light.

• 1. The light bounces off the object and into your eye where the brain interprets what you see.

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MS-PS4-2

 In which model are you able to see the heart? Why? 

• 1. I am able to see the heart in Model 1 because the light from the sun is entering my eye.

• 1. I am able to see the heart in Model 2 because the light from the sun is entering my eye.

• 1. I am able to see the heart in Model 1 because the light is reflecting off the heart and to my eye.

• 1. I am able to see the heart in Model 2 because the light is reflecting off the heart and to my eye.

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MS-PS4-2

 In which model are you able to see the heart? Why? 

• 1. I am able to see the heart in Model 1 because the light from the sun is entering my eye.

• 1. I am able to see the heart in Model 2 because the light from the sun is entering my eye.

• 1. I am able to see the heart in Model 1 because the light is reflecting off the heart and to my eye.

• 1. I am able to see the heart in Model 2 because the light is reflecting off the heart and to my eye.

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MS-PS4-2

Use the consensus model A  to explain how Person A is able to see the piece of clear glass and person B. (Select 3 that apply)

• 1. Light that is scattered by the glass travels to the eyes of person A .

• 1. Person B will not be able to see Person A or the sun through the glass.

• 1. After the light is scatted by Person B it gets transmitted back through the glass where it reaches the eyes of Person A. 

• 2. Light from the sun is transmitted through the glass and is scattered by Person B.

Use consensus model B to explain who will see light from the light source, person in position A or person in position B, or both? (Select 2 that apply)

• 1. Both Person A and Person B will be able to see light from the light source. 

• 1. Only Person A will see light from the source, both scattered by the wood and directly from the source. 

• 1. Person B will not see light from the source, as it is blocked by the wood.

• 2. Neither Person A or Person B is able to see the light from the source.

In your investigation of what happens when light shines on dark and clear objects, how did the amount of light that was reflected and transmitted relate to the amount of heating of the water? 

• 1. The less light reflected and transmitted, the warmer the beaker got.

• 1. The more light reflected and transmitted, the warmer the beaker go.

• 1. The amount of reflected and transmitted light had no affect on how warm the beaker got.

• 1. The less light reflected and transmitted, the cooler the beaker got.

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MS-PS4-2