How Does a Vending Machine Work? | A2 ESL Science Reading Passage

Use this A2-B1 ESL science reading passage to learn how does a vending machine work?. It includes key vocabulary, reading comprehension questions, and answers for English learners.

A vending machine gives a snack or drink after a person pays and chooses an item.

Reading Level

A2-B1

Word Count

190 words

Reading Passage

A vending machine sells things without a store worker standing beside it. People use vending machines to buy drinks, snacks, tickets, or small items.

First, a person makes a payment. Some machines take coins or bills. Others take cards or phone payments. The machine checks if enough money was paid.

Next, the person can select an item. Many machines have buttons or a touch screen. Each item has a number, letter, or picture.

Inside the machine, snacks or drinks sit on shelves. When the machine gets the correct choice, a small motor turns. The motor may push or release the item.

The item falls or moves to a pickup door. Then the person opens the door and takes the item.

Some vending machines have sensors. A sensor can check if the item really moved. If it did not move, the machine may try again or return money.

A vending machine works by checking payment, reading a choice, moving the item, and letting the person pick it up.

Vending machines use payment, buttons, motors, shelves, and a pickup door.

Key Vocabulary

Word	Meaning	Example
vending machine	a machine that sells snacks or drinks	I bought water from a vending machine.
payment	money given for something	The machine accepted the payment.
select	to choose	Select the drink you want.
motor	a part that makes something move	A motor turns inside the machine.
pickup door	the small door where a person gets the item	The snack fell near the pickup door.

Reading Comprehension Questions

1. What does a vending machine sell?
2. What does the machine check first?
3. How can a person select an item?
4. What does a motor do?
5. Why might a vending machine have a sensor?

Answers

1. It sells snacks, drinks, tickets, or small items.
2. It checks if enough money was paid.
3. They can use buttons or a touch screen.
4. It makes something move inside the machine.
5. It can check if the item really moved.

Short Summary

A vending machine checks payment, reads a choice, moves an item with a motor, and sends it to a pickup door.

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