Writing exam answers about digital currency and blockchain
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Which is the better one-sentence definition of digital currency for an exam answer?
2. Which statement about blockchain and digital currency would earn the mark?
3. Which answer uses the syllabus wording for blockchain?
4. Which answer links the point to a reason, as a full-mark answer should?
5. Which statement correctly explains how a blockchain tracks transactions?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1Digital currency is money that only exists electronically. | ADescribing blockchain using the syllabus wording: a digital ledger of blocks joined in a chain. | |
| 2A blockchain is a digital ledger made of linked blocks of transactions. | BBlockchain and digital currency are not the same thing. Blockchain is the ledger technology that records the transactions, while digital currency is the money. | |
| 3Explaining how blockchain tracks a transaction, using ledger, time-stamp and blockchain correctly | CEach transaction is recorded with a time-stamp in a block, and the block is added to the blockchain ledger. | |
| 4Linking a point to a reason with a linking word | DA one-sentence definition of digital currency that would earn the mark in an exam answer. | |
| 5Blockchain is a type of digital currency, like Bitcoin. | EThe answer gives a fact without a reason and has no time-stamp. It does not say why the record matters or how it is tracked. | |
| 6A ledger stores transactions on the blockchain. | FRecords cannot be altered because each block is linked to the one before it, so cheating is easy to spot. |
C
Definitions
key terms and reasons
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
Digital currency is money that
exists only in __________ form.
2.
A blockchain is a digital ______ made up
of blocks joined together in a chain.
3.
Each record has a __________ so that the
order of transactions can be checked.
4.
Records cannot be altered _______ each block
is linked to the previous block.
5.
Blockchain is the ledger that records
transactions; the ________ is the money.
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
Digital currency is money
B
that is printed on paper.
C
It is stored in a wallet.
Question 2
A
A ledger is a record of
B
all the usernames and ages.
C
Each entry has a time-stamp.
Question 3
A
A time-stamp shows when
B
a transaction happened,
C
so the price can be changed.
Question 4
A
A blockchain is a digital
B
ledger. Transactions are
C
grouped into blocks and the
D
blocks are stored on one PC.
Question 5
A
Blockchain is the currency
B
that records transactions
C
of a digital currency.
Answer Key
Writing exam answers about digital currency and blockchain
Section A: Quick Questions
Q1
A — Money that exists only in electronic form and is used to pay for goods and services online
Q2
B — Blockchain is the technology that records digital currency transactions; it is not the currency itself
Q3
A — A digital ledger of transactions that is made of blocks linked together in a chain
Q4
B — Each block has a time-stamp, so the order of transactions can be checked
Q5
A — Each transaction is recorded in a block with a time-stamp, and the block is added to the chain
Section B: Match the Pairs
Q1
Digital currency is money that only exists electronically. → A one-sentence definition of digital currency that would earn the mark in an exam answer.
Q2
A blockchain is a digital ledger made of linked blocks of transactions. → Describing blockchain using the syllabus wording: a digital ledger of blocks joined in a chain.
Q3
Explaining how blockchain tracks a transaction, using ledger, time-stamp and blockchain correctly → Each transaction is recorded with a time-stamp in a block, and the block is added to the blockchain ledger.
Q4
Linking a point to a reason with a linking word → Records cannot be altered because each block is linked to the one before it, so cheating is easy to spot.
Q5
Blockchain is a type of digital currency, like Bitcoin. → Blockchain and digital currency are not the same thing. Blockchain is the ledger technology that records the transactions, while digital currency is the money.
Q6
A ledger stores transactions on the blockchain. → The answer gives a fact without a reason and has no time-stamp. It does not say why the record matters or how it is tracked.
Section C: Definitions
Q1
key terms and reasons — A full-mark answer uses digital currency, ledger, time-stamp and blockchain correctly, and links each point to a reason, using linking words such as because or so that.Section D: Fill in the Blanks
Q1
Digital currency is money that
exists only in electronic form.Q2
A blockchain is a digital ledger made up
of blocks joined together in a chain.Q3
Each record has a time-stamp so that the
order of transactions can be checked.Q4
Records cannot be altered because each block
is linked to the previous block.Q5
Blockchain is the ledger that records
transactions; the currency is the money.Section E: Spot the Error
Q1
B — Digital currency has no physical form. It exists only as data, so line 2 should say 'that exists only as data.'
Q2
B — A ledger records transactions, not usernames and ages. Line 2 should say 'all the transactions made.'
Q3
C — A time-stamp records the date and time, so the order of transactions can be checked. It does not let anyone change the price.
Q4
D — In a blockchain the blocks are joined in a chain, and copies are shared across many computers. They are not stored on one PC. Line 4 should say 'blocks are joined in a chain.'
Q5
A — A common mistake is saying that blockchain and a digital currency are the same thing. Blockchain is the digital ledger that records the transactions, not the currency itself.