Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 167 · 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 repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
2. 2.🧪 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 strongest? (a) design B (b) design C (c) design A
3. 3.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
4. 4.🧪 A paper bridge was tested three times. It held 190 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design A (b) design C (c) design B
6. 6.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
8. 8.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change only one thing (d) skip writing results
9. 9.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
10. 10.True or false: to use the same load is good testing. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) record every result (d) repeat each test
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
13. 13.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
14. 14.🧪 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
15. 15.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
17. 17.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
18. 18.True or false: to test it only once is poor testing. (a) True (b) False
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the strongest? (a) design B (b) design C (c) design A
20. 20.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
21. 21.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
22. 22.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) choose and draw one
23. 23.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
24. 24.🧪 A paper bridge was tested three times. It held 190 g, 80 g and 240 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
27. 27.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 350 g. What is the mean (average) load it held, in grams?
28. 28.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) build it with straws
29. 29.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
30. 30.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
31. 31.True or false: to hide a failed test is good testing. (a) True (b) False
32. 32.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 170 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
34. 34.🧪 A paper bridge was tested three times. It held 220 g, 80 g and 150 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 400 g, 270 g and 260 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
37. 37.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) measure the same way (d) hide a failed test
38. 38.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) measure the same way (d) skip writing results
39. 39.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the weakest? (a) design C (b) design A (c) design B

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