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← Track Zero: Getting Ready for Computing & AI

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Lesson 8 of 9

Track quiz

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6 min

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Before the quiz, a cheat-sheet of the six ideas.

Computing & AI, Track Zero: cheat-sheet of the six ideas
IdeaWhat to remember
What is a computer?A computer does exactly what its instructions say.
Exact instructionsAn exact instruction leaves nothing to guess.
What is a program?A program runs its steps in order.
Screens and pixelsA picture on a screen is a grid of pixels.
The internetThe internet passes a message from computer to computer.
Meeting AIAn AI learns from examples, and it can be wrong.

A computer follows the step "double the number". You put in 4. What comes out?

  • 2
  • 8
  • 6

A computer knows you are happy when it beeps.

  • True. A beep shows a feeling.
  • False. A beep comes from an instruction it runs.

Which instruction is exact?

  • Put it on there.
  • Put the jar on the table.
  • Turn it on.

A program has two steps: "turn right", then "move 1". You swap them. What happens?

  • Nothing. The end square stays the same.
  • The robot can end on a different square.
  • The robot fixes the order itself.

A picture grid has 8 rows and 8 columns. How many pixels is that?

  • 16
  • 64
  • 88

What is a pixel?

  • A very small photo
  • One tiny dot of one colour
  • A part of the internet

A message goes from you to A to B to your friend. How many hops is that?

  • 2
  • 3
  • 4

Where is "the cloud"?

  • In the sky
  • In real computers in real buildings
  • Inside your phone only

A calculator always shows 4 for 2 + 2. What kind of program is it?

  • One that learns from examples
  • One that follows a fixed rule
  • An AI that guesses

An AI answer sounds very sure. What should you do?

  • Trust it, because sure means right.
  • Check it with a grown-up or a book.
  • Stop asking questions.

Reveal every answer to finish this lesson.

That is the end of this subject for Class zero

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