Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 934 · 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.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
2. 2.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) skip writing results (d) use the same load
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) build it with straws
5. 5.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
6. 6.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
7. 7.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design C (b) design B (c) design A
9. 9.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
10. 10.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
11. 11.True or false: to repeat each test is poor testing. (a) False (b) True
12. 12.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
13. 13.True or false: to change lots at once is good testing. (a) False (b) True
14. 14.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 340 g. What is the mean (average) load it held, in grams?
15. 15.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
16. 16.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) record every result (d) repeat each test
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design B (b) design A (c) design C
18. 18.🧪 A paper bridge was tested three times. It held 260 g, 60 g and 160 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
20. 20.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
21. 21.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) test it only once (d) change only one thing
24. 24.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
25. 25.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
26. 26.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
27. 27.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
28. 28.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
29. 29.True or false: to measure the same way is poor testing. (a) True (b) False
30. 30.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
31. 31.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
32. 32.True or false: to change only one thing is good testing. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) record every result (d) change lots at once
34. 34.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
35. 35.🧪 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 C (b) design A (c) design B
36. 36.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B
39. 39.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the strongest? (a) design A (b) design B (c) design C

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