KS3 Year 7 Summative from NCCE

Which one of the following segments of code would you find most appropriate to use in order to draw a blue square in Scratch?

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Answer explanation

One missed the option of making the pen down and pen colour instructions.

The one that just said "Draw (Square)" is not a command availabel in Scratch.

One had no arguments for the commands "move forward" and "turn right".

The computer will not guess this information or make assumptions like a human.

Would the program here play the Nursery rhyme "Hot Cross Buns" correctly?

• Yes

• No

Answer explanation

It has a bug! The two subroutines are correct, but the main code would call them in the wrong order!

What would the output of “say weather” be at the end of this program?

• rain

• cloudy

• rain, sun, rain, cloudy

• weather

Answer explanation

Variables can only hold one piece of data. They only hold the last piece of data assigned to them.

The last value assigned to weather variable was "cloudy", so the say(weather) outputs the value in the weather variable, which is "cloudy".

What value would be held by the ‘name1’ variable and the ‘name2’ variable at the end of this program?

• name1 = Jordan 

  name2 = Riley

• name1 = Riley

  name2 = Jordan

• name1 = Jordan 

  name2 = Jordan

• name1 = Riley

  name2 = Riley

Answer explanation

name2 was assigned the value "Riley" and not changed.

name1 was assigned the value "Jordan", but then assigned th value from name2 ("Riley") where we had set name1 to name2.

What will be the output of this program when it is executed? (What will the sprite say)?

• Good afternoon

• How are you?

• Good afternoon

  How are you?

• Nothing will be outputted/said

Answer explanation

The condition will evaluate as ‘true’ and therefore “Good afternoon” will be outputted.

The “How are you?” will also be outputted as it is outside of the selection statement and so will always be outputted.

What will be the output of this program when it is executed? (What will the sprite say)?

• Good afternoon

  How are you?

• How are you?

• Good morning

  Good afternoon

  How are you?

• Good morning

  How are you?

Answer explanation

The condition evaluates to FALSE as the hour variable is set to 12, and 12 is not less than 12.

The else part of the code executes, outputting "Good Afternoon", then the last line is always outputted.

Select all the conditions that evaluate to ‘True’ with the inputs number 1 = 30 and number 2 = 90 ?

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Answer explanation

The And required both conditions to evaluate to ‘true’. if either is 'false' the AND evaluates to 'false'.

The Or operator requires one OR the other conditions to evaluate to 'true'. If both are ‘true’ the Or will still evaluate to ‘true’. 

Which of the following blocks of code would make the Scratch Cat sprite say “1, 2, 3” leaving a second in between each number?

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Answer explanation

The correct one:

1. initialises (sets) the value of number to 1

2. starts the count-controlled loop

3. Says number

4. Increments (changes) number by 1

5. loops around

The others miss out vital bits:

* one increments number first, so it would say "2, 3, 4"

* one doesn't initialise number so it will give you an undefined result

* one doesn't increment number so will say "1,1,1"

What will be outputted (what will be said) when the following program is executed?

• Sun, Rain, It’s raining

• Sun, Rain, Rain

• Sun, Rain, Rain, It’s raining

• Sun, It’s raining

Answer explanation

1. weather is initialised (set) to "Sun"

2. on the first iteration of the loop, we say "Sun" and then set weather to "Rain".

3. the following 2 iterations say "Rain"

4. the loop finishes and weather is still set to "Rain" so the selection (if) condition evaluates (equals) 'true' adn we say "It's raining"

What will be the output of this program when it is executed? (What will the sprite say)?

• 10, 11, Lunchtime, 12

• 10, 11, Lunchtime, 13

• 10, 11, 12, 13

• 10, 11, Lunchtime, 12, 13

Answer explanation

1. initialise hour to 10

2. on first iteration of loop the condition evaluates to 'false' so execute the else branch

3. increment hour by 1

4. on second iteration of loop the condition evaluates to 'false' so execute the else branch

5. increment hour by 1

6. on third iteration of loop the condition evaluates to 'true' so execute the if branch

7. increment hour by 1

8. on fourth iteration of loop the condition evaluates to 'false' so execute the else branch

9. increment hour by 1

10. exit loop and finish