Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 534 · 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.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
3. 3.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 110 g. What is the mean (average) load it held, in grams?
4. 4.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) load it with coins (c) choose and draw one (d) strengthen the weak part
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design B (b) design A (c) design C
6. 6.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) test it only once (d) change only one thing
7. 7.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
8. 8.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design A (b) design B (c) design C
12. 12.True or false: to record every result is good testing. (a) True (b) False
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
14. 14.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) skip writing results (d) use a new load each time
15. 15.🧪 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
16. 16.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use a new load each time (d) change only one thing
17. 17.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
18. 18.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
19. 19.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
20. 20.True or false: to repeat each test is poor testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
22. 22.True or false: to repeat each test is good testing. (a) True (b) False
23. 23.True or false: to use a new load each time is poor testing. (a) False (b) True
24. 24.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) sketch three ideas
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) sketch three ideas
26. 26.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
27. 27.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
28. 28.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
30. 30.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
32. 32.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 240 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) use the same load (d) measure the same way
35. 35.🧪 A paper bridge was tested three times. It held 220 g, 110 g and 150 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
37. 37.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use a new load each time (d) repeat each test
38. 38.True or false: to change only one thing is poor testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 420 g, 250 g and 380 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to change lots at once is poor testing. (a) True (b) False

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