Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 627 · 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 280 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
2. 2.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) use a new load each time (d) skip writing results
4. 4.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 320 g. What is the mean (average) load it held, in grams?
5. 5.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
6. 6.🧪 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
7. 7.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
9. 9.True or false: to repeat each test is poor testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 350 g, 180 g and 220 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
13. 13.🧪 A paper bridge was tested three times. It held 310 g, 170 g and 210 g. What is the mean (average) load it held, in grams?
14. 14.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
15. 15.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
16. 16.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C
18. 18.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
19. 19.True or false: to measure the same way is good testing. (a) False (b) True
20. 20.True or false: to use a new load each time is poor testing. (a) False (b) True
21. 21.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
22. 22.🧪 A paper bridge was tested three times. It held 270 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
25. 25.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) change lots at once (d) use a new load each time
27. 27.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
29. 29.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
31. 31.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
32. 32.True or false: to guess, do not measure is poor testing. (a) False (b) True
33. 33.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design B (b) design C (c) design A
35. 35.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 190 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) read the challenge rules (d) choose and draw one
37. 37.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 360 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) load it with coins
40. 40.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?

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