How would you convert the binary number 1001 to decimal?

Add $$1 \times 2^3 + 0 \times 2^2 + 0 \times 2^1 + 1 \times 2^0$$

Add $$1 \times 2^2 + 0 \times 2^1 + 0 \times 2^0 + 1 \times 2^3$$

Add $$1 \times 2^1 + 0 \times 2^0 + 0 \times 2^3 + 1 \times 2^2$$

Add $$1 \times 2^0 + 0 \times 2^1 + 0 \times 2^2 + 1 \times 2^3$$

Which of the following is a correct sequence to animate a sprite walking in Scratch?

Switch costume, move steps, wait, switch costume

Change backdrop, play sound, move steps

Change color effect, move steps, wait

You want to create a Scratch animation where a sprite bounces off the edge of the stage. Which blocks and logic would you use?

Use “move steps” and “if on edge, bounce” blocks in a loop

Use “go to x:0 y:0” block only

Use “switch costume” block only

Use “play sound” block in a loop

Given the binary number 10110, explain how you would convert it to decimal.

Add $$1 \times 2^4 + 0 \times 2^3 + 1 \times 2^2 + 1 \times 2^1 + 0 \times 2^0$$

Add $$1 \times 2^3 + 0 \times 2^2 + 1 \times 2^1 + 1 \times 2^0 + 0 \times 2^4$$

Add $$1 \times 2^2 + 0 \times 2^1 + 1 \times 2^0 + 1 \times 2^4 + 0 \times 2^3$$

Add $$1 \times 2^1 + 0 \times 2^0 + 1 \times 2^4 + 1 \times 2^3 + 0 \times 2^2$$

You are tasked with programming an Edison Bot to follow a black line and stop when it reaches a red marker. Which sensors and logic would you use?

Use line tracking sensor and color detection logic

Use sound sensor and obstacle detection

Use light sensor and play sound

Use obstacle detection and looping

A Scratch project requires a sprite to change costumes every 0.5 seconds while moving across the stage. Which blocks and logic would you use?

“Switch costume”, “wait 0.5 seconds”, and “move steps” in a loop

“Play sound”, “wait 0.5 seconds”, and “go to x:0 y:0”

“Change color effect”, “wait 0.5 seconds”, and “move steps”

“Switch backdrop”, “wait 0.5 seconds”, and “move steps”

You want to create a Scratch animation where a sprite says “Hello!” when clicked and then moves 20 steps. Which sequence of blocks would you use?

“When sprite clicked”, “say Hello!”, “move 20 steps”

“When green flag clicked”, “move 20 steps”, “say Hello!”

“When sprite clicked”, “move 20 steps”, “say Hello!”

“When green flag clicked”, “say Hello!”, “move 20 steps”

An Edison Bot is programmed to turn right if it detects a loud sound and left if it detects an obstacle. Which coding structure would best implement this behavior?

If-else statements for both sensors

You are given the binary number 11001. What is its decimal equivalent, and how did you determine it?

25; $$1 \times 2^4 + 1 \times 2^3 + 0 \times 2^2 + 0 \times 2^1 + 1 \times 2^0$$

24; $$1 \times 2^4 + 1 \times 2^3 + 0 \times 2^2 + 0 \times 2^1 + 0 \times 2^0$$

27; $$1 \times 2^4 + 1 \times 2^3 + 1 \times 2^2 + 0 \times 2^1 + 1 \times 2^0$$

29; $$1 \times 2^4 + 1 \times 2^3 + 0 \times 2^2 + 0 \times 2^1 + 1 \times 2^0$$

You want to program an Edison Bot to move forward until it detects an obstacle, then stop and play a sound. Which sequence of actions would you use?

Move forward in a loop, check for obstacle, stop, play sound

Move forward, stop, play sound, check for obstacle

A Scratch animation requires a sprite to glide to a random position and then change its color. Which blocks and logic would you use?

“Glide to random position”, then “change color effect”

“Move steps”, then “switch costume”

“Go to x:0 y:0”, then “play sound”

“Switch backdrop”, then “move steps”

You are designing a coding challenge for the Edison Bot: it must follow a line, stop at an intersection, and then turn right. Which steps and logic would you implement?

Use line tracking to follow, detect intersection, stop, then turn right

Use obstacle detection to follow, stop, then turn left

Use sound detection to follow, stop, then turn right

Use light sensing to follow, stop, then turn left

Exploring Scratch and Binary Concepts

Authored by James Conner

Instructional Technology

8th Grade

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30 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main programming area called in Scratch where you arrange code blocks?

Stage

Script Area

Sprite List

Costume Editor

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which number system uses only the digits 0 and 1?

Decimal

Binary

Octal

Hexadecimal

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name of the small robot that can be programmed using barcodes and block-based coding?

Dash

Edison Bot

Sphero

Ozobot

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In Scratch, what is a “sprite”?

A background image

A sound effect

A character or object that can be programmed

A type of code block

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the binary equivalent of the decimal number 5?

101

110

100

111

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which block in Scratch is used to repeat a set of instructions a certain number of times?

If block

Repeat block

Wait block

Forever block

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of the “play sound” block in Scratch?

Changes the sprite’s color

Plays a selected sound

Moves the sprite

Starts the program

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Exploring Scratch and Binary Concepts

What is the main programming area called in Scratch where you arrange code blocks?

Which number system uses only the digits 0 and 1?

What is the name of the small robot that can be programmed using barcodes and block-based coding?

In Scratch, what is a “sprite”?

What is the binary equivalent of the decimal number 5?

Which block in Scratch is used to repeat a set of instructions a certain number of times?

What is the function of the “play sound” block in Scratch?

What does the binary number 1111 represent in decimal?

Which Edison Bot function allows it to follow a line on the ground?

In Scratch, which block category contains blocks for moving sprites?

Access all questions and much more by creating a free account

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