Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 957 · 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.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
2. 2.🧪 A paper bridge was tested three times. It held 200 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to skip writing results is poor testing. (a) False (b) True
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 280 g. Which design was the strongest? (a) design B (b) design C (c) design A
5. 5.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the weakest? (a) design B (b) design A (c) design C
7. 7.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
8. 8.True or false: to change only one thing is poor testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) choose and draw one
11. 11.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) record every result (d) guess, do not measure
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) test it only once (d) measure the same way
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) strengthen the weak part
14. 14.True or false: to record every result is good testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 210 g, 170 g and 160 g. What is the mean (average) load it held, in grams?
16. 16.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) test it only once (d) change only one thing
17. 17.True or false: to test it only once is good testing. (a) False (b) True
18. 18.🧪 A paper bridge was tested three times. It held 400 g, 220 g and 310 g. What is the mean (average) load it held, in grams?
19. 19.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
21. 21.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
22. 22.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change only one thing (d) record every result
25. 25.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
27. 27.True or false: to repeat each test is good testing. (a) False (b) True
28. 28.True or false: to test it only once is poor testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 370 g, 250 g and 340 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) use a new load each time (d) hide a failed test
32. 32.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
33. 33.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
34. 34.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 150 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
36. 36.True or false: to change lots at once is good testing. (a) True (b) False
37. 37.🧪 A paper bridge was tested three times. It held 250 g, 70 g and 160 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to use a new load each time is poor testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the weakest? (a) design C (b) design A (c) design B
40. 40.True or false: to repeat each test is poor testing. (a) True (b) False

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