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1. Which of the following programming instructions commands the fish to continuously move forward a random speed between 0.5 and 1.0 meters, minus 0.25 meters, until it collides with the shark?

Mark for Review

(1) Points

(*)

Correct

2. From your Alice lessons, variables are fixed and cannot be changed. True or false?

True

False (*)

Incorrect. Refer to Section 2 Lesson 10.

3. Which of the following is an example of nesting in an Alice

program?

Text is nested

inside of a comments tile.

Distance, duration, and direction arguments are nested inside of a procedure.

A move procedure is nested inside of a turn procedure.

Five Do Together statements are nested inside of a Do In Order statement. (*)

Correct

4.

4. From your Alice lessons,

complete the following sentence:

When coded, an event triggers a

___________.

Mark for Review (1) Points

Infinite loop

Gallery

Procedure (*)

Scene


5. In Alice, we use the WHILE control

statement to implement the

conditional loop. True or false?


True (*)

False

Correct

6. Which of the

following is not a valid

primitive type in Java?


boolean

String (*)

long

int

double


7. Results of arithmetic

operations cannot be stored in

a variable. True or false?


True

False (*)

Correct

8. You have a Class representing Cat. Each Cat can meow, purr, catch mice, and so on. When you create a new cat, what is it called? Mark for Review

(1) Points

A submethod

A subprogram

An instance (*)

A subclass

A variable class


9. In Java, a function is a method that returns a value. True or false? Mark for Review

(1) Points

True (*)

False

Correct

10. From your

Alice lessons, built-in

functions provide precise

property details for the

following areas:


Proximity and size.

Distance to and nesting.

Proximity, size, spatial relation, and point of view. (*)

Proximity and point of view.


11. From your Alice lessons, functional decomposition is the process of taking a complex problem or process and growing it into larger parts that are easier to manage. True or false?

True

False (*)


12. From your Alice

lessons, at what point in the

animation process do


you confirm the items on

the "Checklist for Animation

Completion"?

Before designing the animation.

During and after the animation process. (*)

At the beginning of the animation process.

After adding each procedure to the Code editor.

13. In Alice, you can

define your own procedures

for a class, but not your own

functions. True or false?


True

False (*)

Correct

14. In Alice, a computer program requires

functions to tell it how to perform the

procedure. True or false?


True

False (*)

Incorrect.

Refer to Section 2 Lesson 6.

15. In Alice, the setVehicle

procedure will associate one object to

another. True or false?


True (*)

False

Correct

16. In Alice, Do In Order

and Do Together:


Are move statements

Are control statements (*)

Are complex statements

None of the above


17. From your Alice lessons, a flowchart could be created in a software program, or documented in a journal. True or false? Mark for Review

(1) Points

True (*)

False

Correct

18. Before you can begin to develop the animation storyboard, what must be defined? Mark for Review

(1) Points

The code

The debugging process

The scenario (*)

The control statements


19. In Alice, which of the following are benefits of separating out motions into their own procedures? Mark for Review

(1) Points

(Choose all correct answers)

It makes the animation easier to run.

It makes the scene easier to view.

It simplifies code and makes it easier to read. (*)

It allows many objects of a class to use the same procedure. (*)

It can allow subclasses of a superclass to use a procedure. (*)


20. Alice uses built-in math operators; they are: Mark for Review

(1) Points

Add and subtract

Multiply and divide

All of the above (*)

None of the above


21. In Alice, which of the

following programming statements

moves the cat backward, half the

distance to the bird?


this.Cat move backward {this.Bird getDistanceTo this.Cat / 2}

this.Cat move forward {this.Bird getDistanceTo this.Cat / 2}

this.Bird move forward {this.Bird getDistanceTo this.Cat / 2}

this.Cat move backward {this.Cat getDistanceTo this.Bird / 2} (*)

Correct

22. From your Alice lessons, what is a one-shot procedural method? Mark for Review

(1) Points

A procedure that is invoked when the Run button is clicked.

A procedure that is used to make a scene adjustment. (*)

A procedure that is dragged into the Code editor.

A procedure that is used to launch the program.

Correct

Section 3 (Answer all questions in this section)

23. From your Greenfoot lessons, classes can only use the methods they have inherited. They cannot use methods from other classes. True or

false? Mark for Review

(1) Points

True

False (*)

Correct

24. From your Greenfoot lessons, which axes define an object's position in a world? Mark for Review

(1) Points


x (*)

z

y (*)

w

Correct

25. From your Greenfoot lessons, which programming statement creates a new Duke object, and places it at x = 120, y = 100 in the world? Mark for Review

(1) Points

addObject (new Duke( ), 120, 100); (*)

addClass (new Duke( ), 120, 100);

addWorld (new Duke( ), 120, 100);

Move(120,100);

Correct

26. From your Greenfoot

lessons, which type of

constructor can be used to

automate creation of Actor

instances?


Animal

World (*)

Actor

Vector

Correct

27. In Greenfoot, a defined variable is a variable that is defined in an instance. True or false? Mark for Review

(1) Points

True

False (*)


28. Use your Greenfoot knowledge to answer the question: Where are defined variables typically entered in a class's source code? Mark for Review

(1) Points

In the defined method in the source code.

Between the constructors and methods in the source code.

After the constructors and methods in the source code.

At the top of the source code, before the constructors and methods. (*)


29. Using the Greenfoot IDE, when is a constructor automatically executed? Mark for Review

(1) Points

When source code is written.

When a new image is added to the class.

When a new instance of the class is created. (*)

When the act method is executed.


30. From your Greenfoot lessons, which of the following are properties of an instance? Mark for Review

(1) Points

Size

Color

Image file

Methods

All of the above (*)


31. In Greenfoot, instances

inherit the characteristics of the

subclass they belong to, but not the superclass.

True or false?


True

False (*)

Correct

32. In the following Greenfoot method signature, which is the method name?

void turnLeft()


()

void

turnLeft (*)

Left


33. What type of Greenfoot method would be used to turn an object? Mark for Review

(1) Points

orientTo( );

turnAround( );

move ( );

turn( ); (*)


34. In Greenfoot, what happens if the condition is false in an if-statement? Mark for Review

(1) Points

The programming statements are executed.

The if-statement is executed.

The act method is deleted.

The programming statements are not executed. (*)


35. From your Greenfoot lessons, source code is written in the Code editor. True or false? Mark for Review

(1) Points

True (*)

False

Correct

36. In Greenfoot, dot notation is

used to call a _____________ from another

class.


Method (*)

Class

Signature

Parameter

Correct

37. In Greenfoot, objects are created from: Mark for Review

(1) Points

Methods

Classes (*)

Signatures

Parameters

Correct

38. In Greenfoot, you may perform the programming tasks of create and test many times. True or false? Mark for Review

(1) Points

True (*)

False

Correct

39. In the Greenfoot IDE, what symbols indicate that the variable is an array? Mark for Review

(1) Points

Square brackets [ ] (*)

Curly brackets { }

Semicolon ;

Colon :


40. In Greenfoot, a local variable is declared at the beginning of a class. True or false? Mark for Review

(1) Points

True

False (*)

Correct

41. How would the following sentence be written in Greenfoot source code? If Duke's leg is down, and the

keyboard key "d" is down...


if (&&isDown !

Greenfoot.isKeyDown("d") )

if (!isDown &&

Greenfoot.isKeyDown("d") )

if (isDown &&

Greenfoot.isKeyDown("d") ) (*)

if (!Greenfoot.isKeyDown

&& isDown("d") )

Correct

42. Use your Greenfoot knowledge: An array object holds a single

variable. True or false? Mark for Review

(1) Points

True

False (*)


43. From your Greenfoot lessons, the reset button resets the

scenario back to its initial position. True or false?


True (*)

False

Correct

44. Which of the following are examples of a Greenfoot

superclass? Mark for Review

(1) Points


Dog

Cat

Parrot

Actor (*)

World (*)


45. When designing a game in Greenfoot, it helps to define the actions that will take place in a

textual storyboard. True or false?


True (*)

False

Correct

46. In Greenfoot, you will not receive an error message if your

code is incorrect. It will simply not work, and you

will have to determine why the code doesn't

work. True or false?


True

False (*)

Incorrect.


47. From your Greenfoot lessons, abstraction

techniques can only be used once in a class's source code.

True or false?


True

False (*)

Correct

48. In Greenfoot, what type of parameter does

the keyDown method expect?


String (*)

Boolean

Integer

Method

Incorrect.


49. From your Greenfoot

lessons, how do you call a defined method?


Call the method

from the act method. (*)

Call the

method from the defined

method.

Write the method in

the World superclass.

Write the method in

the instance.

Write the method in

the source code.

Correct

50. In Greenfoot, a way to have all subclasses of a superclass inherit

a method is by adding the method to the superclass. True

or false?


True (*)

False

Correct

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