Robotics I Unit 4 Test Review

What is an "if-then" block used for?

• To repeat sections of the program flow.

• To direct the program flow under certain conditions

• To ensure that every line of the code runs

• All of the above

An "if-then" condition that is not inside a loop is checked how many times?

• 0

• 1

• as many times as it needs to

• it depends on the program

There is nothing in front of the robot when the program starts. What will the robot do.

• Turn right

• Go forward

• Do nothing

• Wait for you to press the TouchLED

The robot will only run the Else branch if...

• the condition is true

• the condition is false

• the condition is neither true nor false

• none of the above

What happens when you place a loop around an “if-then-else” block?

• The robot makes a decision and then repeats it as many times as the loops says.

• The robot makes a new decision each time the loop runs.

• You cannot put a loop around an "if-then-else" block.

• The robot defaults to "else."

What is a nested decision?

• An "if-then-else" in a loop

• An "if-then-else" in an "if-then-else"

• A loop in an "if-then-else"

• A loop in a loop

What are nested loops used for?

• Making one-time decisions

• Making multiple decisions

• Repeating a decisions

• Running two sequences at once

What will the robot do if it sees blue?

• The TouchLED will turn yellow

• The robot will drive in reverse

• The robot will turn left

• All of the above

How do repeated decisions allow the robot to watch both sensors at once?

• The program resets and restarts at the beginning every time the readings of any sensor changes

• The robot calculates the path with both sensors at first and runs algorithms for the best way to run the course

• The robot activates a specific sensor at certain times throughout the course

• Every operation is fast, and does not block other blocks from running

In your own words, what is a threshold value?

Answer explanation

It is the value that determines whether to define an input as white or black for example.