Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 449 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.True or false: still clear water reflects light poorly. (a) False (b) True
2. 2.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) an empty juice carton (d) a battery cell
3. 3.True or false: sticky tape is not needed for the periscope. (a) True (b) False
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a friend’s toy (d) a tree
5. 5.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) aluminium foil (d) dark soil
6. 6.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) a shiny steel plate (d) aluminium foil
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) a brighter view (d) two pictures
9. 9.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
11. 11.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
12. 12.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) a mirror (d) dark soil
16. 16.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
18. 18.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
20. 20.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
21. 21.True or false: dark soil reflects light well. (a) False (b) True
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) yeast (d) a pencil
23. 23.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
24. 24.True or false: a pencil is needed for the periscope. (a) False (b) True
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
27. 27.🧺 Which of these is needed for the periscope? (a) a magnet (b) sticky tape (c) turmeric powder (d) yeast
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) vinegar
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
32. 32.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) a mirror
33. 33.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) yeast (d) two small mirrors
34. 34.True or false: a balloon is needed for the periscope. (a) False (b) True
35. 35.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) turmeric powder (d) two small mirrors
36. 36.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
37. 37.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
38. 38.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.True or false: black cloth reflects light poorly. (a) True (b) False
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) sticky tape (d) a balloon

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