Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 219 · 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 change lots at once is good testing. (a) False (b) True
2. 2.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
3. 3.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) test it only once (d) repeat each test
4. 4.🧪 A paper bridge was tested three times. It held 230 g, 140 g and 260 g. What is the mean (average) load it held, in grams?
5. 5.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
8. 8.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
9. 9.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
10. 10.True or false: to use the same load is poor testing. (a) False (b) True
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design A (b) design C (c) design B
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the weakest? (a) design C (b) design B (c) design A
13. 13.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
14. 14.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) change lots at once (d) guess, do not measure
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) sketch three ideas
16. 16.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
18. 18.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) repeat each test (d) measure the same way
19. 19.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
20. 20.🔢 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) strengthen the weak part (d) choose and draw one
21. 21.True or false: to test it only once is good testing. (a) True (b) False
22. 22.🧪 A paper bridge was tested three times. It held 220 g, 220 g and 220 g. What is the mean (average) load it held, in grams?
23. 23.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
24. 24.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
25. 25.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
26. 26.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
27. 27.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) measure the same way (d) record every result
28. 28.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 130 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
30. 30.True or false: to use the same load is good testing. (a) True (b) False
31. 31.True or false: to use a new load each time is good testing. (a) False (b) True
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
33. 33.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
34. 34.🧪 A paper bridge was tested three times. It held 280 g, 110 g and 150 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the weakest? (a) design C (b) design B (c) design A
36. 36.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
39. 39.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?

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