Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 82 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the weakest? (a) design C (b) design B (c) design A
3. 3.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
4. 4.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
5. 5.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
6. 6.🧪 A paper bridge was tested three times. It held 360 g, 210 g and 270 g. What is the mean (average) load it held, in grams?
7. 7.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) measure the same way (d) skip writing results
8. 8.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 290 g, 150 g and 280 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the weakest? (a) design C (b) design A (c) design B
14. 14.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
15. 15.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
16. 16.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) measure the same way (d) use the same load
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
19. 19.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
20. 20.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
21. 21.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 120 g. What is the mean (average) load it held, in grams?
22. 22.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) skip writing results (d) guess, do not measure
23. 23.True or false: to record every result is poor testing. (a) False (b) True
24. 24.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) load it with coins (c) build it with straws (d) sketch three ideas
25. 25.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
26. 26.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) guess, do not measure (d) measure the same way
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
28. 28.🧪 A paper bridge was tested three times. It held 170 g, 50 g and 230 g. What is the mean (average) load it held, in grams?
29. 29.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
30. 30.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) read the challenge rules
32. 32.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
33. 33.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
34. 34.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) record every result (d) change lots at once
35. 35.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) change only one thing (d) measure the same way
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design A (b) design B (c) design C
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
38. 38.True or false: to use the same load is poor testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
40. 40.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) sketch three ideas

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