Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 124 · 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 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design A (b) design C (c) design B
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
3. 3.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
4. 4.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 280 g. What is the mean (average) load it held, in grams?
6. 6.🔢 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
7. 7.True or false: to change only one thing is poor testing. (a) True (b) False
8. 8.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
9. 9.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
10. 10.True or false: to use the same load is poor testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
12. 12.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
13. 13.True or false: to record every result is good testing. (a) False (b) True
14. 14.🧪 A paper bridge was tested three times. It held 340 g, 330 g and 320 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) record every result (d) change only one thing
16. 16.True or false: to use the same load is good testing. (a) True (b) False
17. 17.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) sketch three ideas
18. 18.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
20. 20.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
21. 21.🧪 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 weakest? (a) design C (b) design A (c) design B
22. 22.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
23. 23.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) hide a failed test (d) record every result
24. 24.True or false: to test it only once is good testing. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) use the same load (d) change only one thing
26. 26.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
27. 27.🔢 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
28. 28.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) change only one thing (d) use the same load
30. 30.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) repeat each test (d) change only one thing
32. 32.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) build it with straws
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design A (b) design C (c) design B
35. 35.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
36. 36.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
37. 37.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
38. 38.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once

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