Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 768 · 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 150 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) guess, do not measure (d) record every result
3. 3.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
4. 4.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
5. 5.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
6. 6.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
7. 7.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
9. 9.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
10. 10.True or false: to use the same load is good testing. (a) False (b) True
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
12. 12.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) load it with coins
13. 13.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
14. 14.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
15. 15.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
17. 17.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
18. 18.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
19. 19.🧪 A paper bridge was tested three times. It held 380 g, 230 g and 350 g. What is the mean (average) load it held, in grams?
20. 20.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) test it only once (d) hide a failed test
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design C (b) design B (c) design A
22. 22.True or false: to hide a failed test is good testing. (a) True (b) False
23. 23.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
24. 24.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 150 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) record every result (d) change only one thing
26. 26.True or false: to use a new load each time is poor testing. (a) False (b) True
27. 27.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 300 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design C (b) design A (c) design B
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the strongest? (a) design B (b) design A (c) design C
30. 30.True or false: to change lots at once is good testing. (a) True (b) False
31. 31.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
32. 32.🧪 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 weakest? (a) design C (b) design A (c) design B
33. 33.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
34. 34.True or false: to measure the same way is poor testing. (a) False (b) True
35. 35.🧪 A paper bridge was tested three times. It held 330 g, 280 g and 380 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the strongest? (a) design A (b) design B (c) design C
38. 38.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
39. 39.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
40. 40.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing

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