Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 423 · 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 360 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design B (b) design C (c) design A
2. 2.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) repeat each test (d) test it only once
3. 3.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
4. 4.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
5. 5.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
6. 6.🧪 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?
7. 7.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) skip writing results (d) guess, do not measure
8. 8.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
9. 9.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
11. 11.True or false: to use the same load is good testing. (a) True (b) False
12. 12.True or false: to test it only once is poor testing. (a) False (b) True
13. 13.True or false: to measure the same way is good testing. (a) True (b) False
14. 14.🧪 A paper bridge was tested three times. It held 320 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to repeat each test is good testing. (a) False (b) True
16. 16.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
17. 17.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
18. 18.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
19. 19.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) load it with coins
20. 20.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
21. 21.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) use the same load (d) repeat each test
22. 22.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the strongest? (a) design B (b) design C (c) design A
24. 24.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
25. 25.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
26. 26.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) use the same load (d) record every result
27. 27.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
28. 28.🧪 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 weakest? (a) design B (b) design C (c) design A
29. 29.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change only one thing (d) use a new load each time
30. 30.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
32. 32.True or false: to change only one thing is poor testing. (a) True (b) False
33. 33.🧪 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 A (b) design B (c) design C
34. 34.🧪 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 strongest? (a) design A (b) design C (c) design B
35. 35.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
36. 36.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
37. 37.True or false: to change lots at once is good testing. (a) True (b) False
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
39. 39.🧪 A paper bridge was tested three times. It held 360 g, 320 g and 370 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to guess, do not measure is poor testing. (a) False (b) True

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