End of Unit 3 Review

What type of data can a variable store? Select the best answer.

• Only number data

• Only text data

• Text, number, and many other types of data

• Variables don’t store data

What will be shown on the display when this code is run?

• -4

• 4

• 6

• 10

What does this code segment do?

• Scrolls 0 across the display forever

• Counts to 20 on the display

• Shows a smiley face when the A button is pressed

• Displays how long the A button was held down for

What will be displayed by this code segment?

• 0

• 1

• 5

• 9

This code is supposed to make the Micro:bit play a tune with the notes F, A, and C. What is the problem with the code?

• The notes should not be strings, so they should not have quotes around them.

• The notes should be in a list and have square brackets around them.

• Only the letters F, A, and C should be used—no numbers.

• Nothing is wrong with the code.

What does the index of an element in a list tell you?

• Where it is in the list.

• What value it contains.

• How many elements there are in the list in total.

• What type of data it stores.

What will scroll on the display when this code is run?

• 1

• Nothing

• 12 3

• A smiley face

Which of the function calls below contains a named parameter?

• display.show(Image.ALL_ARROWS, loop=True)

• display.scroll(my_text)

• random.randint(1,7)

• temperature()