Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 159 · 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, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
2. 2.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
3. 3.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
5. 5.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
6. 6.🧪 A paper bridge was tested three times. It held 310 g, 160 g and 250 g. What is the mean (average) load it held, in grams?
7. 7.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) hide a failed test (d) use a new load each time
8. 8.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) use the same load (d) use a new load each time
9. 9.True or false: to test it only once is poor testing. (a) True (b) False
10. 10.True or false: to use a new load each time is poor testing. (a) False (b) True
11. 11.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
12. 12.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) repeat each test (d) change only one thing
13. 13.🧪 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
14. 14.🧪 A paper bridge was tested three times. It held 280 g, 260 g and 270 g. What is the mean (average) load it held, in grams?
15. 15.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
16. 16.True or false: to change only one thing is poor testing. (a) False (b) True
17. 17.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 120 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
19. 19.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
20. 20.True or false: to use a new load each time is good testing. (a) True (b) False
21. 21.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
22. 22.True or false: to skip writing results is poor testing. (a) True (b) False
23. 23.True or false: to repeat each test is good testing. (a) True (b) False
24. 24.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) test it only once (d) skip writing results
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design B (b) design A (c) design C
27. 27.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 140 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 340 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design C (b) design A (c) design B
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) build it with straws
32. 32.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) measure the same way (d) record every result
33. 33.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) measure the same way (d) test it only once
34. 34.🧪 A paper bridge was tested three times. It held 240 g, 210 g and 240 g. What is the mean (average) load it held, in grams?
35. 35.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
36. 36.True or false: to use the same load is poor testing. (a) False (b) True
37. 37.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
38. 38.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 230 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design B (b) design A (c) design C
40. 40.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?

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