Advantage: accuracy and consistency

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. Why can an automated system produce more consistent results than a person?

A It changes the way it does the task each time

B It repeats the task in exactly the same way every time

2. A worker on a production line gets tired after 8 hours. What happens in an automated system?

A It does not get tired, so its accuracy stays the same

B It gets tired too, so its accuracy drops each hour

3. A production line is fully automated. What is the likely result for the products?

A The products are identical to each other

B Each product is slightly different from the last

4. A greenhouse must stay at exactly 22 degrees. Which system keeps the temperature more accurate?

A A person who checks a thermometer now and then

B A temperature sensor and microprocessor that check the reading constantly

5. Which statement about human error is correct?

A Automation reduces human error because the computer follows its program exactly

B Automation increases human error because machines forget the instructions

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1IF temp < 22 THEN heater ON		AA random setting makes each product different, which removes the consistency of automation.
2WHILE running = TRUE		BIF reading > 22 THEN coolerON
3Identical products on a production line: a robot follows the same steps for every item		CThe system repeats its task again and again without getting tired, so the 1000th result is as good as the first.
4Sensors give precise measurements, so an exact target such as 22 degrees can be kept		DFOR item ← 1 TO 500 weld(item)
5target ← 'about 22'		EThe microprocessor compares the sensor reading with the stored value 22 and switches the heater on in exactly the same way every time.
6weld(item, RANDOM(1, 5))		FThe target is vague text, not an exact number, so the sensor reading cannot be compared precisely.

Definitions

consistency

Fill in the Blanks

Complete each line of code by filling in the missing parts.

IF temperature _ 22 THEN heater ← ON ENDIF

IF temperature > 22 THEN heater ← ___ ENDIF

_____ running = TRUE CHECKTEMP() ENDWHILE

FOR item ← 1 __ 100 CUT(50) NEXT item

target ← 22 reading ← SENSOR() IF reading <> ______ THEN ADJUST()

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A targt ← 22

B temp ← READ_SENSOR()

C IF temp < target THEN

D heater ON

E ENDIF

Question 2

A IF line_running = TRUE

B bottle ← FILL(500)

C CHECK(bottle)

D ENDWHILE

Question 3

A parts ← 0

B REPEAT

C CUT_PART(50)

D parts + 1 ← parts

E UNTIL parts = 100

Question 4

A WHILE TRUE

B temp ← READ_SENSOR()

C IF temp > 22 THEN

D cooler OFF

E ENDIF

F ENDWHILE

Question 5

A target = 22

B reading = sensor.read(

C diff = abs(reading - target)

D print(diff)

Answer Key

Advantage: accuracy and consistency

Section A: Quick Questions

B — It repeats the task in exactly the same way every time

A — It does not get tired, so its accuracy stays the same

A — The products are identical to each other

B — A temperature sensor and microprocessor that check the reading constantly

A — Automation reduces human error because the computer follows its program exactly

Section B: Match the Pairs

IF temp < 22 THEN heater ON → The microprocessor compares the sensor reading with the stored value 22 and switches the heater on in exactly the same way every time.

WHILE running = TRUE → The system repeats its task again and again without getting tired, so the 1000th result is as good as the first.

Identical products on a production line: a robot follows the same steps for every item → FOR item ← 1 TO 500 weld(item)

Sensors give precise measurements, so an exact target such as 22 degrees can be kept → IF reading > 22 THEN coolerON

target ← 'about 22' → The target is vague text, not an exact number, so the sensor reading cannot be compared precisely.

weld(item, RANDOM(1, 5)) → A random setting makes each product different, which removes the consistency of automation.

Section C: Definitions

consistency — An automated system repeats a task in exactly the same way every time, with no tiredness or human error, so its results are more accurate and consistent than human work.

Section D: Fill in the Blanks

IF temperature < 22 THEN
   heater ← ON
ENDIF

IF temperature > 22 THEN
   heater ← OFF
ENDIF

WHILE running = TRUE
   CHECKTEMP()
ENDWHILE

FOR item ← 1 TO 100
   CUT(50)
NEXT item

target ← 22
reading ← SENSOR()
IF reading <> target THEN ADJUST()

Section E: Spot the Error

A — The variable name is misspelled. The later lines use target, so the system would never hold the temperature at exactly 22. It should be target ← 22.

A — An automated production line must repeat the same task over and over, so it needs a WHILE loop. IF runs once and does not match ENDWHILE. It should be WHILE line_running = TRUE.

D — Assignment goes the wrong way. The new value must be stored in the variable on the left, so the line should be parts ← parts + 1. Then all 100 parts are cut identically.

D — If the temperature is above 22 the cooler must be switched ON to bring it back to 22. Switching it OFF would make the room even hotter. It should be cooler ON.

B — The closing bracket is missing, so the function call is not complete and gives a syntax error. It should be reading = sensor.read().