Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 93 · 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.True or false: to guess, do not measure is poor testing. (a) False (b) True
2. 2.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 400 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
4. 4.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
5. 5.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) measure the same way (d) guess, do not measure
6. 6.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) build it with straws
7. 7.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
8. 8.True or false: to repeat each test is good testing. (a) False (b) True
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the weakest? (a) design C (b) design A (c) design B
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) build it with straws
11. 11.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
12. 12.True or false: to guess, do not measure is good testing. (a) False (b) True
13. 13.🧪 A paper bridge was tested three times. It held 380 g, 280 g and 210 g. What is the mean (average) load it held, in grams?
14. 14.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
15. 15.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
16. 16.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design B (b) design C (c) design A
18. 18.🧪 A paper bridge was tested three times. It held 180 g, 130 g and 230 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
20. 20.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) measure the same way (d) repeat each test
21. 21.🧪 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 C (b) design A (c) design B
22. 22.🧪 A paper bridge was tested three times. It held 360 g, 210 g and 240 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
26. 26.True or false: to hide a failed test is poor testing. (a) False (b) True
27. 27.🧪 A paper bridge was tested three times. It held 340 g, 230 g and 270 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 320 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to record every result is good testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 190 g, 100 g and 250 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) skip writing results (d) guess, do not measure
32. 32.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 380 g. What is the mean (average) load it held, in grams?
33. 33.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design C (b) design B (c) design A
35. 35.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
36. 36.True or false: to use a new load each time is poor testing. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) use a new load each time
38. 38.🧪 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?
39. 39.True or false: to use the same load is good testing. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) repeat each test (d) skip writing results

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