Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 770 · 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 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
3. 3.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
4. 4.True or false: to repeat each test is poor testing. (a) False (b) True
5. 5.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
6. 6.True or false: to hide a failed test is good testing. (a) False (b) True
7. 7.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
8. 8.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) hide a failed test (d) use a new load each time
9. 9.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) record every result (d) test it only once
10. 10.True or false: to skip writing results is good testing. (a) True (b) False
11. 11.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
12. 12.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
13. 13.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the strongest? (a) design B (b) design C (c) design A
15. 15.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
18. 18.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
19. 19.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) measure the same way (d) guess, do not measure
20. 20.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) change only one thing (d) guess, do not measure
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design C (b) design A (c) design B
22. 22.True or false: to use the same load is poor testing. (a) False (b) True
23. 23.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
25. 25.True or false: to guess, do not measure is poor testing. (a) True (b) False
26. 26.True or false: to record every result is poor testing. (a) False (b) True
27. 27.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
28. 28.True or false: to use a new load each time is poor testing. (a) True (b) False
29. 29.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 300 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the strongest? (a) design C (b) design B (c) design A
32. 32.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 400 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 210 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to change lots at once is poor testing. (a) False (b) True
35. 35.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) read the challenge rules
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design C (b) design A (c) design B
37. 37.🧪 A paper bridge was tested three times. It held 360 g, 260 g and 430 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the strongest? (a) design C (b) design A (c) design B
39. 39.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
40. 40.🧪 A paper bridge was tested three times. It held 310 g, 130 g and 250 g. What is the mean (average) load it held, in grams?

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