Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 433 · 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 280 g, design B held 330 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
2. 2.🧪 A paper bridge was tested three times. It held 220 g, 80 g and 240 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to repeat each test is good testing. (a) True (b) False
4. 4.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
5. 5.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
6. 6.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) hide a failed test (d) repeat each test
7. 7.🧪 A paper bridge was tested three times. It held 150 g, 120 g and 180 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design B (b) design C (c) design A
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the strongest? (a) design C (b) design B (c) design A
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design A (b) design C (c) design B
12. 12.🧪 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
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
14. 14.True or false: to change lots at once is good testing. (a) True (b) False
15. 15.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
16. 16.True or false: to use the same load is poor testing. (a) False (b) True
17. 17.🧪 A paper bridge was tested three times. It held 150 g, 50 g and 250 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to measure the same way is poor testing. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) skip writing results (d) repeat each test
20. 20.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
21. 21.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) measure the same way (d) skip writing results
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
23. 23.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
24. 24.True or false: to use a new load each time is poor testing. (a) False (b) True
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design B (b) design A (c) design C
26. 26.🧪 A paper bridge was tested three times. It held 380 g, 220 g and 240 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to hide a failed test is good testing. (a) False (b) True
28. 28.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
29. 29.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
31. 31.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) use the same load (d) hide a failed test
32. 32.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 160 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the weakest? (a) design B (b) design A (c) design C
35. 35.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
36. 36.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) measure the same way (d) repeat each test
37. 37.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
38. 38.True or false: to skip writing results is poor testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 200 g. What is the mean (average) load it held, in grams?

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