Knowledge quiz

It's time to put what you've learned to the test, get 8 right to pass this unit.

Which block initiates the script of a clone?

Choose the correct answer.

when I start as a clone

delete this clone

a new clone of myself

when I receive a clone

What does the term "recursion" mean?

Choose the correct answer.

Waiting for a user input to happen and then reacting accordingly

Launching several scripts at the same time and running them concurrently

Using a custom block instance inside its own definition body

Hiding complexity behind a more convenient interface

What is an algorithm?

There are two correct answers.

An unambiguous specification of how to solve a problem

Instructions for problem-solving that can be implemented using a programming language or a human language

The text-based description of a problem

The solution to a problem in one specific programming language

A computer-generated song

What is emergence?

There are two correct answers.

A pattern in which the whole picture looks exactly like the sum of its single parts

A pattern evolving from a process that is more than its single parts

A situation that poses an immediate risk to health

A process to merge the scripts of two sprites

A process in which a pattern can emerge from chaos

What do you call a shape whose parts look like smaller versions of the whole?

Choose the correct answer.

A fractal

A stamp

A morph

Which of the following statements is true for reporters in Snap!?

There are three correct answers.

In Snap!, reporters are only available in the Operators category.

You can make custom reporters in Snap!

Reporters are shaped like jigsaw puzzle pieces and cannot be used as input for other blocks.

Reporters are oval-shaped and can function as input for other blocks.

Reporters report values like numbers, lists, or words.

Which variable scopes exist in Snap!?

There are three correct answers.

Script local (for script variables)

Sprite only (when making a variable "for this sprite only")

Dynamic, when a function can access the local variables of its caller

Global (when making a variable "for all sprites")

Static, each variable block is linked to a particular variable

With which graphic effect can you change the transparency of your sprite?

Choose the correct answer.

negative effect

mosaic effect

ghost effect

blur effect

What do clones have in common with the "parent" sprite they are derived from?

There are two correct answers.

A clone and its parent sprite share the same costumes.

A clone and its parent always have the same x- and y-coordinates. The clone is always on top of the original sprite.

A clone and its parent sprite have the same scripts.

A clone and its parent always have the same values in their sprite-local variables

10.

How can you move a sprite backwards?

There are two correct answers.

By first turning 180°, then moving the distance, and then again turning 180°

By using a negative number in the input to the "move" block

By changing the y-position by a positive number

By using the "go to" block with the center option