Exploring Light Sensing with Circuit Playground Express

Exploring Light Sensing with Circuit Playground Express

Assessment

Interactive Video

Science

6th - 10th Grade

Hard

Created by

Mia Campbell

FREE Resource

The video tutorial explains the function and applications of light sensors, particularly in the Circuit Playground Express. It covers the basics of conductors, insulators, and semiconductors, and delves into the workings of LEDs and depletion regions. The tutorial demonstrates how to build a simple tripwire system using a light sensor and flashlight, providing practical coding instructions. It concludes with potential real-world applications of light sensors, such as security systems and automatic lighting.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of a light sensor?

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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