Inverse Square Law
Authored by Lisa Thompson
Science
8th Grade
NGSS covered
Used 1+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Light Intensity: As one gets further from a light source, the intensity of light....
Increases
Decreases
Gets brighter
Gets more luminous
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A student stands 10 feet away from a light bulb. The student walks toward the light bulb to a 5 feet distance. Which is true? Intensity = 1 / d2
The bulb appears 2x's brighter
The bulb appears 4x's brighter
The bulb appears 5x's brighter
The bulb appears 25x's brighter
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Based on the picture...what is the RATE of change of light intensity as one moves FURTHER from the light source?
Light intensity INCREASES at an inverse square
Light intensity INCREASES as a direct relationship
Light intensity DECREASES at an inverse square
Light intensity INCREASES as a direct relationship
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
SOLVE: A light bulb has an intensity of 50 watts at a distance of 1 meter. What is the intensity of the light at 5 meters? Intensity = 1 / d2
1 watt
2 watts
5 watts
10 watts
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
As one approaches (gets closer) to a light bulb, the brightness of the bulb....
Increases (brighter)
Decreases
Stays the same
Changes in some unknown way
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
At a distance of 1m, the intensity of light is spread over a 1m x 1m area. What is the area of light spread out at distance 2m?
1 m2
2 m2
4 m2
8 m2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
SOLVE: An iPhone light shines at 40 watts from 6 meters away. What is the intensity of light at 2 meters away?
120 watts
160 watts
360 watts
720 watts
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