Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 845 · 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.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
2. 2.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) hide a failed test (d) change lots at once
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
5. 5.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the weakest? (a) design B (b) design C (c) design A
7. 7.True or false: to test it only once is poor testing. (a) True (b) False
8. 8.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
9. 9.🧪 A paper bridge was tested three times. It held 380 g, 220 g and 300 g. What is the mean (average) load it held, in grams?
10. 10.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
11. 11.True or false: to change lots at once is poor testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) change lots at once (d) use a new load each time
13. 13.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
15. 15.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
16. 16.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) use the same load (d) repeat each test
18. 18.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
19. 19.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) measure the same way (d) change lots at once
20. 20.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
21. 21.True or false: to use the same load is poor testing. (a) True (b) False
22. 22.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
23. 23.True or false: to record every result is poor testing. (a) True (b) False
24. 24.True or false: to record every result is good testing. (a) False (b) True
25. 25.🧪 A paper bridge was tested three times. It held 370 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 360 g, 300 g and 270 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 240 g, 200 g and 250 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to repeat each test is poor testing. (a) False (b) True
29. 29.True or false: to guess, do not measure is good testing. (a) True (b) False
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design B (b) design C (c) design A
31. 31.🔢 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) strengthen the weak part
32. 32.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 330 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 340 g, 240 g and 410 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the weakest? (a) design B (b) design C (c) design A
35. 35.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 200 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to use the same load is good testing. (a) True (b) False
37. 37.🧪 A paper bridge was tested three times. It held 300 g, 140 g and 190 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
39. 39.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) use a new load each time
40. 40.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product

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