Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 118 · 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 120 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
2. 2.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) read the challenge rules
5. 5.🧪 A paper bridge was tested three times. It held 290 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
6. 6.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
8. 8.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 380 g. What is the mean (average) load it held, in grams?
10. 10.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
11. 11.True or false: to test it only once is poor testing. (a) True (b) False
12. 12.True or false: to guess, do not measure is poor testing. (a) True (b) False
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 330 g. Which design was the weakest? (a) design A (b) design B (c) design C
14. 14.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
15. 15.🧪 A paper bridge was tested three times. It held 150 g, 60 g and 240 g. What is the mean (average) load it held, in grams?
16. 16.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 170 g. What is the mean (average) load it held, in grams?
17. 17.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
18. 18.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
19. 19.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
20. 20.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
21. 21.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 100 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
23. 23.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
24. 24.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) test it only once (d) change only one thing
25. 25.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
26. 26.🧪 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 A (b) design B (c) design C
27. 27.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
28. 28.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
29. 29.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
31. 31.True or false: to guess, do not measure is good testing. (a) True (b) False
32. 32.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
33. 33.🧪 A paper bridge was tested three times. It held 310 g, 290 g and 300 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design B (b) design C (c) design A
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
36. 36.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) use a new load each time (d) guess, do not measure
37. 37.True or false: to test it only once is good testing. (a) True (b) False
38. 38.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
39. 39.True or false: to use a new load each time is good testing. (a) True (b) False
40. 40.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?

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