Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 157 · 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.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
2. 2.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the weakest? (a) design B (b) design C (c) design A
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design C (b) design A (c) design B
6. 6.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
7. 7.True or false: to record every result is good testing. (a) True (b) False
8. 8.🧪 A paper bridge was tested three times. It held 170 g, 150 g and 190 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the strongest? (a) design C (b) design A (c) design B
10. 10.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) skip writing results (d) repeat each test
11. 11.🧪 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 weakest? (a) design C (b) design B (c) design A
12. 12.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) hide a failed test (d) measure the same way
13. 13.🧪 A paper bridge was tested three times. It held 170 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
14. 14.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
16. 16.🧪 A paper bridge was tested three times. It held 320 g, 290 g and 320 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 “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
18. 18.🧪 A paper bridge was tested three times. It held 270 g, 80 g and 160 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
20. 20.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 320 g, 280 g and 270 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
23. 23.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) read the challenge rules
24. 24.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) change only one thing (d) change lots at once
25. 25.True or false: to change lots at once is poor testing. (a) False (b) True
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design B (b) design C (c) design A
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
28. 28.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
29. 29.True or false: to change lots at once is good testing. (a) False (b) True
30. 30.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) load it with coins
31. 31.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
32. 32.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design B (b) design A (c) design C
34. 34.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
35. 35.True or false: to measure the same way is poor testing. (a) True (b) False
36. 36.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
37. 37.True or false: to test it only once is good testing. (a) False (b) True
38. 38.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
39. 39.True or false: to use the same load is good testing. (a) False (b) True
40. 40.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules

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