Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 4 · 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.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
2. 2.True or false: to test it only once is good testing. (a) True (b) False
3. 3.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
4. 4.🧪 A paper bridge was tested three times. It held 330 g, 190 g and 350 g. What is the mean (average) load it held, in grams?
5. 5.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) skip writing results
7. 7.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
8. 8.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
9. 9.True or false: to record every result is good testing. (a) False (b) True
10. 10.True or false: to guess, do not measure is poor testing. (a) False (b) True
11. 11.True or false: to use the same load is poor testing. (a) True (b) False
12. 12.🔢 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
13. 13.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design B (b) design A (c) design C
15. 15.🧪 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
16. 16.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
17. 17.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
18. 18.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
19. 19.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
20. 20.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
21. 21.True or false: to measure the same way is good testing. (a) False (b) True
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
23. 23.🧪 A paper bridge was tested three times. It held 250 g, 180 g and 110 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) use a new load each time
25. 25.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 270 g. What is the mean (average) load it held, in grams?
26. 26.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
27. 27.🔢 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
28. 28.True or false: to change only one thing is good testing. (a) False (b) True
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) sketch three ideas
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
31. 31.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
32. 32.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
33. 33.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design B (b) design C (c) design A
35. 35.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
36. 36.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
37. 37.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
38. 38.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to repeat each test is poor testing. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) hide a failed test (d) record every result

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