Lesson 29: Programming a Multi Control Traffic System

What does the "Change X by 10" block do in Scratch?

• It adds 10 to the Y-coordinate of a sprite.

• It changes the sprite's name to "10."

• It increases the sprite's size by 10%.

• It adds 10 to the X-coordinate of a sprite.

In Scratch, what does the concept of "layer" refer to?

• Different programming languages

• The order in which images are displayed on the screen

• The number of roads in a traffic system

• The type of vehicles used in the game

What is one of the benefits of a Multi Control Traffic System?

• Maximizing congestion

• Reducing travel times

• Increasing unnecessary stops

• Randomly coordinating traffic signals

How does a Multi Control Traffic System enhance safety?

• By increasing congestion

• By reducing travel times

• By coordinating signals at intersections

• By causing unnecessary stops

What is the main task of writing code for a virtual multi-control traffic system in Scratch?

• Drawing virtual pets

• Programming traffic light timings and coordinating signals

• Designing a spaceship

• Creating a music player

What does "programming traffic light timings" involve in a Multi Control Traffic System?

• Making traffic lights always green

• Setting specific time intervals for each traffic light

• Randomly changing traffic light colors

• Removing traffic lights from the system

What does the following block do?

• Broadcasts a message randomly

• Broadcasts a message when the condition is satisfied

• Broadcasts a random message

• Stops the Broadcast

What happens when green flag is clicked?

• The sprite moves 10 steps

• The sprite waits for 1 seconds

• The block inside repeated is repeated 10 times

• Nothing happens

When is the block executed?

• When green flag is clicked

• When Sprite is clicked

• When layer is changed

• When message is received

Which of the following blocks is found in Events?

• Broadcast [message] and wait

• Wait

• Repeat

• Forever