Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 235 · 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.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) measure the same way (d) change lots at once
2. 2.True or false: to record every result is poor testing. (a) True (b) False
3. 3.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 250 g. What is the mean (average) load it held, in grams?
4. 4.🧪 A paper bridge was tested three times. It held 170 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to test it only once is poor testing. (a) False (b) True
6. 6.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
7. 7.True or false: to measure the same way is poor testing. (a) True (b) False
8. 8.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
9. 9.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
10. 10.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
11. 11.🧪 A paper bridge was tested three times. It held 320 g, 310 g and 300 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
13. 13.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 320 g. What is the mean (average) load it held, in grams?
14. 14.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
15. 15.True or false: to use a new load each time is good testing. (a) False (b) True
16. 16.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
17. 17.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
18. 18.True or false: to hide a failed test is poor testing. (a) False (b) True
19. 19.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
20. 20.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) hide a failed test (d) repeat each test
21. 21.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
22. 22.🧪 A paper bridge was tested three times. It held 210 g, 90 g and 240 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
25. 25.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
26. 26.True or false: to repeat each test is poor testing. (a) True (b) False
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the strongest? (a) design A (b) design C (c) design B
29. 29.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
30. 30.🧪 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 weakest? (a) design A (b) design C (c) design B
31. 31.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
32. 32.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
33. 33.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
34. 34.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) use a new load each time (d) repeat each test
35. 35.True or false: to measure the same way is good testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
38. 38.True or false: to change only one thing is poor testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 160 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing

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