Playground Express

Which of the following is an input device on the Circuit Playground Express?

• LED Lights

• Speaker

• Button A

• Alligator Clips

What is an example of an output device on the Circuit Playground Express?

• Accelerometer

• Slide switch

• Microphone

• Neopixel LEDs

What does the "forever" loop do in MakeCode?

• • Runs code once when the program starts

• • Waits for an input before running code

• • Stops the code from running

• • Repeats the code inside it continuously

When does the code inside an "on shake" block run?

• • When the board is powered on

• • When the accelerometer detects a shake

• • Every second

• • When Button A is pressed

Which of the following is a real-world use for loud sound detection?

• Turning on lights with a clap

• Measuring temperature

• Counting steps

• Displaying the time

You want to build a wearable that flashes different colors when you jump or dance. Which sensor is best for detecting this movement?

• Temperature sensor

• Accelerometer

• Microphone

• Light sensor

A student wants to make a device that plays a sound if someone turns off the lights in the classroom. Which input triggers the sound?

• • Light sensor

• • Microphone

• • Temperature sensor

• • Microphone

A friend wants to create a “reaction game” where a random light flashes and the player must press the correct button as quickly as possible. Which block is needed to make the light flash randomly?

• • Random number block

• • Timer

• • Temperature sensor

• • On shake event

A friend wants to make a pet feeder that releases food when their dog barks near the device. Which input should control the feeder?

• • Button A

• • Accelerometer

• • Microphone detecting loud sound

• • Light sensor

Which of these is a practical use for sound detection with a Circuit Playground Express that could help people in everyday life?

• Measuring the temperature in a room

• Turning on lights automatically when it gets dark

• Giving an early warning when thunder is detected during a storm

• Counting the number of steps you take during the day