Brightness of Light

Quiz
•
Physics
•
9th - 12th Grade
•
Hard
+1
Standards-aligned
Charles Martinez
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2 minutes and 8 seconds (128 seconds)
4 minutes and 10 seconds (250 seconds)
8 minutes and 20 seconds (500 seconds)
10 minutes and 20 seconds (620 seconds)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Light Intensity: As one gets further from a light source, the intensity of light....
Increases
Decreases
Gets brighter
Gets more luminous
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
As one approaches (gets closer) to a light bulb, the brightness of the bulb appears to....
Increase (get brighter)
Decreases
Stays the same
Changes in some unknown way
Tags
NGSS.HS-PS4-1
NGSS.HS-PS4-3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Earth's Sun is 93 million miles from Earth. Mercury is closest and Neptune is the furthest planet. Which one experiences the greatest intensity of light energy?
(*of the 3 given)
Mercury
Earth
Neptune
All 3 receive the same sunlight intensity (it's the Sun)
5.
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
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
Tags
NGSS.HS-PS4-1
NGSS.HS-PS4-3
7.
MULTIPLE CHOICE QUESTION
2 mins • 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
Tags
NGSS.HS-PS4-1
NGSS.HS-PS4-3
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