Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 938 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the strongest? (a) design B (b) design A (c) design C
2. 2.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
4. 4.True or false: to hide a failed test is poor testing. (a) True (b) False
5. 5.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) measure the same way (d) use the same load
7. 7.🧪 A paper bridge was tested three times. It held 280 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the strongest? (a) design B (b) design A (c) design C
10. 10.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
11. 11.🧪 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
12. 12.True or false: to repeat each test is poor testing. (a) True (b) False
13. 13.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
14. 14.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) build it with straws
15. 15.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
16. 16.True or false: to change lots at once is good testing. (a) False (b) True
17. 17.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
18. 18.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design C (b) design B (c) design A
20. 20.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
21. 21.True or false: to repeat each test is good testing. (a) True (b) False
22. 22.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
23. 23.🔢 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
24. 24.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) load it with coins (d) read the challenge rules
25. 25.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 390 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to hide a failed test is good testing. (a) True (b) False
27. 27.True or false: to test it only once is poor testing. (a) False (b) True
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the weakest? (a) design C (b) design B (c) design A
29. 29.🧪 A paper bridge was tested three times. It held 330 g, 300 g and 360 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) hide a failed test
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
32. 32.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 160 g. What is the mean (average) load it held, in grams?
34. 34.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
37. 37.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
38. 38.True or false: to use a new load each time is good testing. (a) True (b) False
39. 39.True or false: to record every result is good testing. (a) False (b) True
40. 40.🧪 A paper bridge was tested three times. It held 160 g, 160 g and 160 g. What is the mean (average) load it held, in grams?

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