Chapter 3 - Reading Quiz - CSC121

A(n) ________ structure is a logical design that controls the order in which a set of statements execute.

The decision structure that has two possible paths of execution is known as

Multiple Boolean expressions can be combined by using a logical operator to create ________ expressions.

When using the ________ logical operator, one or both of the subexpressions must be true for the compound expression to be true.

Which logical operators perform short-circuit evaluation?

A Boolean variable can reference one of two values which are

Which of the following is the correct if clause to determine whether choice is anything other than 10?

When using the ________ logical operator, both subexpressions must be true for the compound expression to be true.

In Python the ________ symbol is used as the not-equal-to operator.

In Python the ________ symbol is used as the equality operator.

Which of the following will hide the turtle if it is visible?

Which of the following will determine if the turtle's pen is up and will change it to down if that is the case?

The Python language is not sensitive to block structuring of code. T/F

The if statement causes one or more statements to execute only when a Boolean expression is true. T/F

Python allows you to compare strings, but it is not case sensitive. T/F

Nested decision statements are one way to test more than one condition. T/F

Python uses the same symbols for the assignment operator as for the equality operator. T/F

The not operator is a unary operator which must be used in a compound expression. T/F

Short -circuit evaluation is only performed with the not operator. T/F

Expressions that are tested by the if statement are called Boolean expressions. T/F

Decision structures are also known as selection structures. T/F

An action in a single alternative decision structure is performed only when the condition is true. T/F

The following statement will check to see if the turtle's pen color is 'green': if turtle.pencolor() = 'green' T/F

The following code snippet will change the turtle's pen size to 4 if it is presently less than 4: if turtle.pensize() < 4: turtle.pensize(4) T/F

statement is used to create a decision structure.

symbol is used to represent a Boolean expression.

decision structure provides only one alternative path of execution.

executed because it is performed only when a specific condition is true.

operator determines whether a specific relationship exists between two values.

statement will execute one block of statements if its condition is true or another block if its condition is false.

Python provides a special version of a decision structure known as the ___________ statement, which makes the logic of the nested decision structure simpler to write.

The logical _______________ operator reverses the truth of a Boolean expression.

Boolean variables are commonly used as _______________ to indicate whether a specific condition exists.

expression is made up of two or more Boolean expressions.

The turtle.isdown() function returns _____________ if the turtle's pen is down.