1.
The command to go forwards 100 is:
Explanation
The command "forward 100" and "fd 100" both instruct the program or computer to move forward by a distance of 100 units. These commands are commonly used in programming languages to control the movement of objects or characters.
2.
The command to go back 100 is:
Explanation
The correct answer is "bk 100, back 100" because both commands "bk 100" and "back 100" are valid ways to go back or move backwards by 100 units.
3.
The command to right turn 90o is
Explanation
The given correct answer for the question is "rt 90, right 90". This is because "rt 90" and "right 90" are both valid commands to make a right turn of 90 degrees. The "rt" command is a shorthand for "right" and is commonly used in programming or command line interfaces to represent a right turn. Therefore, both "rt 90" and "right 90" are correct ways to express the command to make a right turn of 90 degrees.
4.
The command to left turn 90o is:
Explanation
The correct answer is "lt 90, left 90" because both commands "lt 90" and "left 90" indicate a left turn of 90 degrees. The "lt" command is a commonly used abbreviation for "left turn" and the number 90 specifies the angle of the turn. Similarly, the "left" command followed by 90 also denotes a left turn of 90 degrees. Therefore, both commands are correct ways to execute a left turn of 90 degrees.
5.
The command to pick the pen up is:
Explanation
The correct answer is "pu, penup" because both "pu" and "penup" are valid commands used in programming to pick the pen up. These commands are commonly used in turtle graphics, where the pen is used to draw on a canvas. "pu" and "penup" are shorthand versions of the same command, allowing the programmer to choose the one that is more intuitive or convenient for them.
6.
What is the correct command to change the pen color to color index 2 in MSW LOGO?
Explanation
In MSW LOGO, the SETPENCOLOR command is used to change the color of the pen. The correct way to use this command is with the color index specified inside square brackets. This syntax indicates that the input is a list. Although you might see SETPENCOLOR 2 work in some LOGO interpreters, the most typical and universally correct format includes the brackets: SETPENCOLOR [2], where "2" usually corresponds to a predefined color in LOGO's color palette, such as blue, depending on the specific implementation of the LOGO environment.
7.
In MSW LOGO, which command is used to set the thickness of the lines drawn by the turtle to 10 units?
Explanation
In MSW LOGO, the command to change the pen size or the thickness of the lines drawn by the turtle is SETWIDTH, which requires the new width to be specified within square brackets. Therefore, to set the pen width to 10 units, the correct command is SETWIDTH [10]. This command ensures that any subsequent lines drawn by the turtle will have the specified thickness. The square brackets are used to indicate that the input is a list, which is a required format for the SETWIDTH command in some versions of LOGO.
8.
The command to clear the screen is:
Explanation
The correct answer is "CS" or "clearscreen" because these are the commands used to clear the screen in a computer or command line interface. By entering either of these commands, the screen will be cleared of any text or output, providing a clean and blank slate for the user to work with.
9.
The command to fill a shape is:
Explanation
The command "fill" is used to fill a shape with a specified color or pattern. It is commonly used in computer graphics or design software to add color or texture to a shape. By using the "fill" command, the shape is filled completely, covering the entire area within its boundaries.
10.
The correct command for making a square is:
Correct Answer
A. Repeat 4 [ fd 100 rt 90]
Explanation
The correct command for making a square is "repeat 4 [ fd 100 rt 90]" because it uses the "repeat" command to repeat a set of instructions four times. Inside the brackets, "fd 100" moves the turtle forward by 100 units, and "rt 90" turns the turtle right by 90 degrees. By repeating these instructions four times, the turtle will move forward and turn right four times, creating a square shape. The other options do not include the necessary instructions or syntax to create a square.
11.
The correct command for a circle is:
Correct Answer
A. Repeat 360 [ fd 1 rt1]
Explanation
The correct command for a circle is "repeat 360 [ fd 1 rt1]". This command repeats the forward movement and right turn 360 times, creating a complete circle. The "fd 1" moves the turtle forward by 1 unit, and "rt 1" makes a right turn by 1 degree. By repeating this sequence 360 times, the turtle will move in a circular path. The other commands mentioned in the options do not create a circle.
12.
A procedure starts with to and ends with the end.
Correct Answer
A. True
Explanation
The statement is stating that a procedure starts with "to" and ends with "end". This implies that there is a specific format or structure that a procedure must follow, where it begins with "to" and concludes with "end". Therefore, the correct answer is true, as it aligns with the given statement.
13.
The best reason for making procedures is:
Correct Answer
C. It saves your programs and saves you from having to type things more than once
Explanation
Making procedures is beneficial because it saves programs and reduces the need to repeat typing. By creating procedures, code can be organized and reused, leading to more efficient and concise programming. This helps in saving time and effort in the long run.
14.
If you don't save your logo files you will have to start again from scratch the next lesson.
Correct Answer
A. True
Explanation
If you don't save your logo files, it means that you haven't preserved your progress or work. Therefore, if you don't save your logo files, you will have to start creating the logo again from the beginning in the next lesson.
15.
Typing bye will end your logo session.
Correct Answer
A. True
Explanation
The given correct answer is "True". However, since there is no accompanying question or context provided, it is impossible to determine the specific explanation for why "True" is the correct answer.
16.
To make this shape you need to type.
Correct Answer
B. Repeat 4 [ fd 100 rt 90]
Explanation
The correct answer is "repeat 4 [ fd 100 rt 90]". This is because the given shape consists of four sides, where each side is a line segment of length 100 units and a right turn of 90 degrees. The command "repeat 4" ensures that this sequence of forward and right turn commands is executed four times, resulting in the desired shape.
17.
To make this triangle shape you need to type.
Correct Answer
A. Repeat 3 [fd 100 rt 120]
Explanation
The command "repeat 3 [fd 100 rt 120]" instructs a turtle in a graphics program to create a triangle. It means: repeat the following actions three times—move forward by 100 units, then turn right by 120 degrees. The 120-degree turns create the three interior angles of an equilateral triangle.