Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 831 · 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 use more paper (c) to get reliable results (d) the first is wrong
2. 2.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
3. 3.🧪 A paper bridge was tested three times. It held 430 g, 310 g and 280 g. What is the mean (average) load it held, in grams?
4. 4.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
5. 5.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
6. 6.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
7. 7.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
8. 8.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
9. 9.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
10. 10.True or false: to use the same load is good testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
12. 12.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
13. 13.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
14. 14.True or false: to skip writing results is good testing. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) repeat each test (d) hide a failed test
16. 16.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
17. 17.True or false: to record every result is poor testing. (a) True (b) False
18. 18.True or false: to guess, do not measure is good testing. (a) True (b) False
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design B (b) design A (c) design C
20. 20.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design B (b) design C (c) design A
23. 23.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 310 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to measure the same way is good testing. (a) False (b) True
25. 25.True or false: to change lots at once is poor testing. (a) True (b) False
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design C (b) design A (c) design B
27. 27.🧪 A paper bridge was tested three times. It held 200 g, 90 g and 160 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to use a new load each time is good testing. (a) False (b) True
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design A (b) design C (c) design B
30. 30.🔢 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) build it with straws (d) strengthen the weak part
31. 31.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
32. 32.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
33. 33.🧪 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 C (b) design A (c) design B
34. 34.🧪 A paper bridge was tested three times. It held 360 g, 350 g and 340 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
36. 36.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
37. 37.True or false: to change lots at once is good testing. (a) False (b) True
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 300 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
39. 39.🧪 A paper bridge was tested three times. It held 440 g, 320 g and 260 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 230 g. What is the mean (average) load it held, in grams?

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids