What is the primary function of a light sensor?

Exploring Light Sensing with Circuit Playground Express

Interactive Video
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Science
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6th - 10th Grade
•
Hard

Mia Campbell
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To measure humidity
To measure temperature
To measure light intensity
To measure sound levels
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where is the light sensor located on the Circuit Playground Express?
Next to the A8 and I symbol
Next to the B1 and J symbol
Next to the C2 and K symbol
Next to the D3 and L symbol
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which material allows electricity to flow through it?
Insulator
Conductor
Semiconductor
Capacitor
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a semiconductor?
A material that never allows electricity to flow
A material that always allows electricity to flow
A material that allows electricity to flow under special circumstances
A material that stores electrical energy
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the depletion region in a semiconductor?
A region where positive and negative charges cancel each other out
A region that always conducts electricity
A region where only positive charges exist
A region where only negative charges exist
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the depletion region when light is shined onto an LED?
It disappears
It remains the same
It becomes larger
It becomes smaller
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the capacitance of the PN junction change when light is removed?
It remains constant
It fluctuates randomly
It increases
It decreases
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