Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 584 · 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 210 g, 120 g and 120 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the weakest? (a) design C (b) design B (c) design A
3. 3.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) test it only once (d) hide a failed test
4. 4.True or false: to change lots at once is good testing. (a) False (b) True
5. 5.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
6. 6.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
7. 7.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
8. 8.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
9. 9.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
10. 10.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 150 g. What is the mean (average) load it held, in grams?
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) load it with coins
12. 12.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
13. 13.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
14. 14.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
15. 15.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
16. 16.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
17. 17.True or false: to use the same load is poor testing. (a) True (b) False
18. 18.True or false: to skip writing results is good testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
20. 20.🧪 A paper bridge was tested three times. It held 370 g, 260 g and 330 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to hide a failed test is good testing. (a) False (b) True
22. 22.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) use the same load (d) measure the same way
24. 24.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
25. 25.True or false: to change only one thing is poor testing. (a) True (b) False
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
27. 27.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
28. 28.🔢 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
29. 29.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
30. 30.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) measure the same way (d) use the same load
31. 31.True or false: to change lots at once is poor testing. (a) False (b) True
32. 32.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
33. 33.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
35. 35.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design A (b) design B (c) design C
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
39. 39.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 320 g, 240 g and 220 g. What is the mean (average) load it held, in grams?

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