Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 709 · 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: a dull brick reflects light poorly. (a) True (b) False
2. 2.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
3. 3.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.True or false: a ruler is needed for the periscope. (a) False (b) True
6. 6.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) sticky tape (d) turmeric powder
7. 7.🧺 Which of these is needed for the periscope? (a) a pencil (b) turmeric powder (c) yeast (d) a balloon
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) an empty juice carton (d) a pencil
9. 9.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it can float (d) so it looks shiny
10. 10.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
11. 11.⚖️ 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) True (b) False
12. 12.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
13. 13.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) refraction (d) evaporation
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
15. 15.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 90 degrees (d) 180 degrees
16. 16.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) dark soil (d) black cloth
18. 18.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
19. 19.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a dull brick (d) a rough wooden board
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a pencil (d) sticky tape
21. 21.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) two small mirrors (d) a ruler
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same mirrors (c) how clear the view is (d) the same light
27. 27.True or false: vinegar is not needed for the periscope. (a) False (b) True
28. 28.True or false: turmeric powder is needed for the periscope. (a) True (b) False
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) turmeric powder (c) a pencil (d) a ruler
31. 31.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) two small mirrors (d) a balloon
32. 32.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
33. 33.True or false: dark soil reflects light well. (a) False (b) True
34. 34.True or false: a magnet is needed for the periscope. (a) False (b) True
35. 35.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a magnet (d) an empty juice carton
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
39. 39.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) yeast
40. 40.True or false: a battery cell is needed for the periscope. (a) True (b) False

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