Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 420 · 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.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the weakest? (a) design B (b) design A (c) design C
3. 3.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) test it only once (d) use a new load each time
4. 4.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
5. 5.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
6. 6.🧪 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 strongest? (a) design C (b) design A (c) design B
7. 7.🧪 A paper bridge was tested three times. It held 290 g, 140 g and 200 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
9. 9.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) skip writing results (d) guess, do not measure
10. 10.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 260 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to skip writing results is poor testing. (a) False (b) True
12. 12.True or false: to use a new load each time is poor testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
14. 14.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
15. 15.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
17. 17.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) change lots at once (d) skip writing results
18. 18.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
19. 19.True or false: to change lots at once is poor testing. (a) False (b) True
20. 20.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
21. 21.True or false: to use the same load is good testing. (a) True (b) False
22. 22.True or false: to measure the same way is good testing. (a) False (b) True
23. 23.True or false: to change only one thing is poor testing. (a) True (b) False
24. 24.True or false: to repeat each test is poor testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) measure the same way (d) test it only once
27. 27.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 220 g. What is the mean (average) load it held, in grams?
28. 28.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) choose and draw one
29. 29.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
30. 30.True or false: to test it only once is good testing. (a) False (b) True
31. 31.True or false: to record every result is good testing. (a) False (b) True
32. 32.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 120 g. What is the mean (average) load it held, in grams?
34. 34.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
36. 36.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
37. 37.🧪 A paper bridge was tested three times. It held 370 g, 210 g and 350 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
40. 40.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?

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