logic and computers chapter 5-9

Question 1

This instruction is used to repeat other instructions a specific number of times.

Answer 1

C. Loop

Question 2

This is a type of variable that the Loop instruction uses internally.

Answer 2

B. Counter

Question 3

This is a loop that repeats without ending.

Answer 3

A. Infinite

Question 4

This instruction is a count-controlled loop.

Answer 4

C. Loop

Question 5

This instruction is a conditional loop.

Answer 5

D. While

Question 6

This is a loop that is inside another loop.

Answer 6

A. Nested loop

Question 7

A loop is inside another loop. The outer loop repeats 5 times and the inner loop repeats 4 times. How many times will a statement that is inside the inner loop execute?

Answer 7

D. 20 times

Question 8

If you want to add a new behavior to an object, you add this type of method to it.

Answer 8

B. Class-level method

Question 9

After you have saved an object to a new class, you do this to add an instance of it to a world.

Answer 9

C. Click File, then Import…

Question 10

In this process, the programmer goes through each step in an algorithm, expanding it until it has enough detail to be translated into actual instructions.

Answer 10

B. Divide and conquer

Question 11

This is a special variable that holds an argument being passed into a method.

Answer 11

C. Parameter

Question 12

In Alice, a property is really one of these.

Answer 12

B. A class-level variable

Question 13

This instruction is required in all functions.

Answer 13

A. Return

Question 14

This is the process of breaking a long complex algorithm into small manageable pieces.

Answer 14

D. Divide and conquer

Question 15

To insert a graphical image into a world, you create one of these.

Answer 15

B. Billboard

Question 16

This property specifies that the object will move with another object.

Answer 16

A. vehicle

Question 17

You use this primitive method call to move the camera to a dummy object.

Answer 17

C. camera.set point of view to

Question 18

This is what the process of responding to an event is called.

Answer 18

C. Handling the event

Question 19

When an Alice world is first created, this is the event for which the only tile appears in the Events Editor.

Answer 19

A. When the world starts

Question 20

This is an event handler.

Answer 20

B. A method that is executed in response to an event

Question 21

This is what BDE stands for

Answer 21

C. Begin, During, End

Question 22

This world function returns a random number.

Answer 22

D. random number

Question 23

By default, a random number is between these two values.

Answer 23

B. 0 and 1

Question 24

Which of the following characteristics do you not specify with the hebuilder or shebuilder tools?

Answer 24

A. Hat

Question 25

You use this statement to display messages in the text console area while a world is running.

Answer 25

C. print

Question 26

The first item in a list or array is stored at this position.

Answer 26

B. 0

Question 27

This is the size of a list or an array.

Answer 27

A. The number of items stored in the list or array

Question 28

This is always the position number of the last item in a list or an array.

Answer 28

C. One less than the size of the list or array

Question 29

This instruction steps through a list, one item at a time, performing the same operation on each item in the list.

Answer 29

A. For all in order

Question 30

This instruction steps through a list, simultaneously performing the same operation on each item in the list.

Answer 30

B. For all together

Question 31

A list has one or more methods for this.

Answer 31

D. All of the above

Question 32

A list has one or more methods for this.

Answer 32

D. All of the above

Question 33

This event uses a list of objects.

Answer 33

C. Let the mouse move <objects></objects>

Question 34

This is true for the size of an array.

Answer 34

A. It cannot change while the world is running

Question 35

This is a dynamic data structure.

Answer 35

B. List

Question 36

This is what a recursive method does.

Answer 36

C. It calls itself

Question 37

Method A calls method B, and then method B calls itself four times. The depth of recursion is which of the following?

Answer 37

B. Four

Question 38

This is the part of a problem that can be solved without recursion.

Answer 38

A. Base case

Question 39

This is the part of a problem that is solved with recursion.

Answer 39

D. Recursion case

Question 40

This is what we must do in the recursive case.

Answer 40

B. Reduce the problem to a smaller version of the original problem

Question 41

This is what we must do in the base case.

Answer 41

A. Solve the problem without recursion