Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 284 · 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.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 350 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) choose and draw one (d) load it with coins
5. 5.🧪 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 weakest? (a) design C (b) design B (c) design A
6. 6.True or false: to measure the same way is good testing. (a) False (b) True
7. 7.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
8. 8.True or false: to use a new load each time is good testing. (a) False (b) True
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design B (b) design A (c) design C
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
11. 11.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
12. 12.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
13. 13.🔢 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
14. 14.True or false: to change lots at once is poor testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 290 g, 140 g and 260 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
17. 17.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
18. 18.True or false: to use a new load each time is poor testing. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) test it only once
20. 20.True or false: to use the same load is poor testing. (a) False (b) True
21. 21.🧪 A paper bridge was tested three times. It held 210 g, 160 g and 230 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to test it only once is poor testing. (a) True (b) False
23. 23.True or false: to guess, do not measure is poor testing. (a) False (b) True
24. 24.True or false: to measure the same way is poor testing. (a) False (b) True
25. 25.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design A (b) design C (c) design B
27. 27.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
28. 28.True or false: to record every result is poor testing. (a) True (b) False
29. 29.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
30. 30.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use a new load each time (d) change only one thing
31. 31.🔢 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
32. 32.True or false: to test it only once is good testing. (a) True (b) False
33. 33.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
35. 35.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) hide a failed test
36. 36.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) measure the same way (d) hide a failed test
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
38. 38.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
39. 39.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
40. 40.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing

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