PS1 Lesson 6-8 Review

What pattern did you notice when you shined a flashlight at a mirror?

• The readings were the highest when the light and the light sensor were on the same line position number making a “V.”

• The readings were highest when the flashlight and the light sensor were on very different numbers.

• The readings were the same at every number and didn’t change when we moved the flashlight.

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NGSS.MS-PS4-2

Which model best shows the path each light ray will take after it bounces off a mirror?

• 
• 

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What pattern did you notice when shining a light onto a piece of paper? 

• The light sensor had similar readings at every position except the odd number positions.

• The light sensor readings showed similar highs and lows as seen with the mirror.

• There did not seem to be a large difference between the highest and lowest readings.

• The light did not scatter off of the paper.

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NGSS.MS-PS4-2

What is different about the mirror and the paper that could explain why the results were different for each object? 

• Bumpy surfaces reflect light more evenly and do not result in as much scattering.

• The surfaces of the mirror and the paper do not affect how they reflect or scatter light.

• The surface of the mirror is smooth while the surface of paper is somewhat rough. Smooth surfaces reflect light more evenly and do not result in as much scattering.

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NGSS.MS-PS4-2

Which best describes how light behaves when it interacts with smooth versus rough surfaces.

• Scattering is what occurs when light hits a smooth surface.

• Light reflects off a smooth surface at the opposite angle at which it hits a smooth surface. When light hits a bumpy surface it scatters in all directions.

• The surface of an object does not play a role in how light will behave when the light hits an object.

• When light hits a surface it can be reflected or scattered, it depends on the light source.

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NGSS.MS-PS4-2

When light reflects it does the following:

• Bounces off a smooth surface in all directions.

• Bounces off a rough surface at the same angle.

• Bounces off a rough surface in all directions.

• Bounces off a smooth surface at the same angle.

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NGSS.MS-PS4-2

Why are the light readings reflected from the mirror very small except at a single position?

• At this position all the light reaching the mirror from the flashlight is reflected toward the detector.

• When all of the light is reflected it triples sensor readings.

• There is something wrong with the light sensor, all of the readings should be similar

• The direct light reflecting off the mirror gets very hot and increases the sensor readings.

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NGSS.MS-PS4-2

Why are the readings of the light reflected from the paper pretty much all the same at every position?

• There is something wrong with the light sensor, the numbers should have increased a lot more at position 3.

• Paper absorbs most of the light from the flashlight

• Paper does not transmit light as well as a mirror.

• The light from the flashlight gets scattered from the paper in all directions.

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NGSS.MS-PS4-2

Which object is opaque?

• sunglasses

• cardboard

• blue tinted water

• window

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According to the light model, what happens to light when it reaches an object?

• Light will bounce off the eye.

• Light reflects at right angles off an object.

• Light will reflect or scatter when it reaches the eye.

• Light will reflect or scatter when it reaches an object

Tags

NGSS.MS-PS4-2