Basic Blockchain MCQs for 8th Graders

What is blockchain mainly used for?

• Watching videos

• Sending emails

• Saving records safely

• Playing music

What is Bitcoin?

• A video game

• A type of online money

• A bank

• A mobile app

Who created Bitcoin?

• Elon Musk

• Bill Gates

• Satoshi Nakamoto

• Mark Zuckerberg

What is a 'block' in blockchain?

• A toy

• A book

• A storage of data

• A password

What connects the blocks in blockchain?

• Wire

• Code

• Hash

• Link

What does a hash do?

• Deletes data

• Changes photos

• Hides messages

• Secures the block's data

What kind of system is blockchain?

• Centralized

• Distributed

• Offline

• Private

What is Ethereum?

• A new game

• A car brand

• Another type of digital money like Bitcoin

• A search engine

What is a smart contract?

• A paper contract

• A legal document

• A self-running computer program

• A smart mobile app

What is the job of a miner in blockchain?

• Builds houses

• Mines gold

• Verifies transactions

• Writes stories