Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 930 · 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.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
2. 2.True or false: to record every result is poor testing. (a) True (b) False
3. 3.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
4. 4.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
5. 5.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) use the same load (d) repeat each test
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
7. 7.True or false: to change lots at once is good testing. (a) False (b) True
8. 8.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) hide a failed test
10. 10.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
11. 11.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design A (b) design B (c) design C
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
14. 14.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
15. 15.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
16. 16.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
17. 17.True or false: to repeat each test is good testing. (a) False (b) True
18. 18.True or false: to skip writing results is good testing. (a) True (b) False
19. 19.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
20. 20.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) load it with coins
21. 21.True or false: to repeat each test is poor testing. (a) True (b) False
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design A (b) design B (c) design C
23. 23.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
24. 24.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design A (b) design C (c) design B
27. 27.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
28. 28.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) use the same load (d) measure the same way
29. 29.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) guess, do not measure (d) change lots at once
30. 30.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
31. 31.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
32. 32.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
33. 33.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design B (b) design C (c) design A
35. 35.True or false: to test it only once is good testing. (a) False (b) True
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design B (b) design C (c) design A
37. 37.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 430 g, 250 g and 310 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design B (b) design C (c) design A

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