Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 615 · 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.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
2. 2.True or false: to test it only once is good testing. (a) True (b) False
3. 3.True or false: to use a new load each time is good testing. (a) False (b) True
4. 4.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
5. 5.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
6. 6.True or false: to change lots at once is poor testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
8. 8.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
9. 9.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
10. 10.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
11. 11.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
12. 12.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
14. 14.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) use the same load (d) repeat each test
15. 15.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
16. 16.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
17. 17.True or false: to use the same load is good testing. (a) False (b) True
18. 18.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design B (b) design A (c) design C
20. 20.🧪 A paper bridge was tested three times. It held 340 g, 300 g and 380 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design B (b) design C (c) design A
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) skip writing results (d) record every result
23. 23.True or false: to test it only once is poor testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 290 g. What is the mean (average) load it held, in grams?
25. 25.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the strongest? (a) design C (b) design B (c) design A
27. 27.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
28. 28.True or false: to repeat each test is good testing. (a) False (b) True
29. 29.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
31. 31.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
32. 32.True or false: to guess, do not measure is poor testing. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) test it only once (d) record every result
34. 34.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
35. 35.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design B (b) design A (c) design C
37. 37.🧪 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 C (b) design B (c) design A
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design C (b) design B (c) design A
39. 39.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 170 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

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