Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 931 · 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 240 g, 200 g and 190 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 170 g, design B held 220 g and design C held 120 g. Which design was the weakest? (a) design A (b) design B (c) design C
3. 3.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
4. 4.True or false: to measure the same way is poor testing. (a) False (b) True
5. 5.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design A (b) design C (c) design B
7. 7.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the strongest? (a) design C (b) design B (c) design A
9. 9.True or false: to hide a failed test is poor testing. (a) False (b) True
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design B (b) design A (c) design C
11. 11.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
13. 13.True or false: to record every result is poor testing. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) hide a failed test (d) repeat each test
15. 15.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
16. 16.True or false: to test it only once is good testing. (a) True (b) False
17. 17.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design B (b) design A (c) design C
19. 19.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
21. 21.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) use the same load (d) hide a failed test
22. 22.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
23. 23.True or false: to change only one thing is good testing. (a) True (b) False
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) read the challenge rules (d) sketch three ideas
25. 25.True or false: to use the same load is good testing. (a) True (b) False
26. 26.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 330 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
28. 28.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design B (b) design A (c) design C
30. 30.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) change lots at once (d) use the same load
31. 31.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
33. 33.True or false: to use a new load each time is poor testing. (a) True (b) False
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design A (b) design C (c) design B
35. 35.True or false: to record every result is good testing. (a) True (b) False
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
37. 37.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 350 g, 170 g and 230 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws

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