Advantage: safety in dangerous places

Name:

Date:

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Quick Questions

Shade in the A or B circle for each question.

1. Why might a company use an automated system in a room full of toxic chemicals?

A So the chemicals become safe to touch

B So people are not put at risk from the chemicals

2. Which is a safety advantage of using an automated system?

A It can work in hazardous places so people stay out of danger

B It never needs to be switched on

3. A robot is sent to collect gas samples near an active volcano. What is the main advantage?

A Scientists are not put at risk from heat and toxic gases

B The volcano will stop erupting

4. Which place is hard to reach or dangerous for people, so an automated system is useful there?

A A classroom

B The deep sea

5. Why are automated probes used in space exploration?

A They can work where people cannot easily survive or reach

B They are cheaper than every other type of computer

Match the Pairs

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

Left column		Right column
1robot_arm.handle(toxic_chemical)		Asubmarine.dive(depth_m=4000)
2probe.explore(volcano_crater)		BA person is sent into the toxic room. An automated system should do this job so that the person is not put at risk.
3An automated submersible can work in the deep sea, where the pressure would harm a human diver		CA probe collects data inside a volcano so that scientists do not have to enter the danger zone
4Automated machines can work in very high temperatures so that workers are not burned		DIF temp > 500 THEN robot.work()
5worker.enter(toxic_room)		EA person is sent into danger. The system should send a robot or machine to the hazardous or hard-to-reach place.
6IF danger = TRUE THEN person.go()		FA robot handles a dangerous chemical so that no person is exposed to the poison

Definitions

safety in dangerous places

Fill in the Blanks

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

__ gasLevel > 50 THEN sendRobot ← TRUE ENDIF

IF temperature > 900 ____ robotEnters ← TRUE ENDIF

IF depth _ 200 THEN sendRobot ← TRUE ENDIF

IF lavaNear = TRUE THEN ______ "Send drone" ENDIF

IF chemicalLeak = TRUE THEN sendRobot ← TRUE _____

Spot the Error

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

Question 1

A gas ← GAS_SENSOR()

B IF gas > 50

C SEND_ROBOT()

D ENDIF

Question 2

A depth ← 0

B WHILE depth < 3000

C ROV.DIVE(10)

D depth ← depth - 10

E ENDWHILE

Question 3

A radiation ← READ_SENSOR()

B IF radiation ← 5 THEN

C alarm ← TRUE

D ROBOT.RETREAT()

E ENDIF

Question 4

A pressure ← READ_PRESSURE()

B IF pressure > 200 THEN

C STOP_MACHINE()

D OUTPUT Machine stopped

E ENDIF

Question 5

A leak ← LEAK_SENSOR()

B IF leak = TRUE THEN

C worker.SEAL_PIPE()

D ENDIF

Answer Key

Advantage: safety in dangerous places

Section A: Quick Questions

B — So people are not put at risk from the chemicals

A — It can work in hazardous places so people stay out of danger

A — Scientists are not put at risk from heat and toxic gases

B — The deep sea

A — They can work where people cannot easily survive or reach

Section B: Match the Pairs

robot_arm.handle(toxic_chemical) → A robot handles a dangerous chemical so that no person is exposed to the poison

probe.explore(volcano_crater) → A probe collects data inside a volcano so that scientists do not have to enter the danger zone

An automated submersible can work in the deep sea, where the pressure would harm a human diver → submarine.dive(depth_m=4000)

Automated machines can work in very high temperatures so that workers are not burned → IF temp > 500 THEN robot.work()

worker.enter(toxic_room) → A person is sent into the toxic room. An automated system should do this job so that the person is not put at risk.

IF danger = TRUE THEN person.go() → A person is sent into danger. The system should send a robot or machine to the hazardous or hard-to-reach place.

Section C: Definitions

safety in dangerous places — An automated system can work in hazardous or hard-to-reach places, such as toxic chemicals, volcanoes, deep sea or space, so people are not put at risk.

Section D: Fill in the Blanks

IF gasLevel > 50 THEN
    sendRobot ← TRUE
ENDIF

IF temperature > 900 THEN
    robotEnters ← TRUE
ENDIF

IF depth > 200 THEN
    sendRobot ← TRUE
ENDIF

IF lavaNear = TRUE THEN
    OUTPUT "Send drone"
ENDIF

IF chemicalLeak = TRUE THEN
    sendRobot ← TRUE
ENDIF

Section E: Spot the Error

B — An IF statement must end its condition with THEN. It should be IF gas > 50 THEN, so the robot is sent into the toxic area instead of a person.

D — The depth must increase so the loop ends at 3000. Subtracting 10 makes an endless loop. It should be depth ← depth + 10, so the underwater robot dives and no diver is at risk.

B — The line uses the assignment arrow instead of a comparison. It should be IF radiation > 5 THEN, so the alarm and retreat only happen when radiation is high.

D — Text to be displayed must be inside quotation marks. It should be OUTPUT "Machine stopped". The system stops the heavy machinery itself, so no worker is put at risk.

C — The point of the system is that a robot does the dangerous job in the chemical plant, not a person. It should be robot.SEAL_PIPE() so no worker is exposed to toxic chemicals.