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WorksheetsTechnology examination revision
Total questions: 20
Worksheet time: 10mins
What is the main purpose of the fulcrum in a trebuchet?
To stop the motion
To launch the projectile
To act as the pivot point
To store energy
In the design process cycle, what is the primary benefit of producing a prototype and testing each stage incrementally?
To reduce the need for documentation and planning
To identify and rectify potential design flaws or issues early on
To speed up development by skipping intermediate steps
To focus only on the final product without exploring intermediate stages
Which option best describes a current trend in the Asia–Pacific region for plant-based foods?
Few consumers have tried plant-based alternatives and launches are declining
Fast growth in plant-based food launches; consumers increasingly choose dairy substitutes and meat-alternatives
Plant-based food market is shrinking because consumers prefer traditional meat and dairy
Only imported plant-based products are adopted; local versions are not growing
Which industry is a major earner in Australian agriculture?
Wool
Tea
Coffee
Pine nuts
Cross-contamination occurs when:
Food is overcooked
Bacteria transfers between surfaces
Ingredients are not chopped
Food is stored in sealed containers
The temperature danger zone for food is:
0–5°C
60–100°C
5–60°C
100–120°C
The ingredients list on a food label is arranged in order of:
Alphabetical order
Most to least by weight
Nutritional value
Date of purchase
Which energy transformation best describes what happens as a trebuchet’s counterweight falls?
Kinetic to thermal
Gravitational potential to kinetic
Elastic potential to chemical
Electrical to kinetic
If a catapult launches with the same speed but at different angles, which angle generally maximizes horizontal range on level ground?
30 degrees
45 degrees
60 degrees
75 degrees
Which scenario best illustrates cross-contamination?
Using the same cutting board for raw chicken and salad without washing
Boiling pasta in salted water
Storing rice in an airtight container
Baking bread at high heat
A deli uses the same knife to slice raw beef and then tomatoes without cleaning. What risk does this create?
Overcooking the tomatoes
Cross-contamination by transferring bacteria
Loss of nutritional value in the beef
Reduced food miles for the meal
Buying strawberries from a nearby farm instead of flying them in reduces:
Cross-contamination risk
Food miles
Danger zone temperatures
Ingredient weights
In trebuchet testing, which factor most directly reduces random variation and makes results comparable across trials?
Changing the projectile type each time
Standardising the pull-back angle before release
Moving the trebuchet to different ground surfaces
Adding more decorations to the frame
When measuring the performance of a trebuchet, why is recording launch angle as well as distance useful?
It helps compare shots fairly by accounting for trajectory shape
It makes the projectile heavier
It prevents the sling from tangling
It ensures the counterweight doesn’t drop too far
In the habit-tracking app diagram, what is the role of the API in relation to the database and mobile app?
It provides the user interface for entering habits
It acts as a bridge that receives requests from the app and queries the database
It stores all user records locally on the phone
It secures data by encrypting only the images
A course requires the robot to slow down when it sees blue, speed up for yellow, and stop at black. Which combination of logic blocks would best structure these decisions?
forever + start moving
if/else + C is colour ? + and/or
wait 1 seconds + move right 30 for rotations
set movement motors to A+B + stop moving
What is the main advantage of reading sensor values inside a loop rather than once at startup?
The robot continually adapts to changing conditions.
It permanently disables the motors.
It guarantees faster battery charging.
It prevents the code from using variables.
Which technique helps a robot smoothly decelerate before stopping?
Gradually reduce motor power over successive steps.
Suddenly reverse the motor direction at full power.
Increase power until the robot hits an obstacle.
Ignore speed and rely on a hard brake only.
To avoid overshooting a target distance, what control strategy is most appropriate?
Use sensor feedback to slow down as the robot approaches the target.
Run at maximum speed until the target is reached.
Disable sensors to reduce processing time.
Stop the robot only after a fixed delay, regardless of position.
Which coding construct best fits reacting to an obstacle detected by a distance sensor?
An if/else decision that changes motor behavior based on sensor values.
A constant that never changes during runtime.
A comment describing the robot’s color.
A print statement that logs battery level only.
