Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 570 · 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 pencil is not needed for the periscope. (a) False (b) True
2. 2.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a balloon (d) sticky tape
4. 4.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) sticky tape (d) a magnet
5. 5.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
8. 8.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) sticky tape (d) vinegar
9. 9.⚖️ 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 change it (c) we measure it
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
13. 13.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a dull brick (d) aluminium foil
14. 14.True or false: a pencil is needed for the periscope. (a) False (b) True
15. 15.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.True or false: a ruler is not needed for the periscope. (a) False (b) True
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) how clear the view is (c) the same light (d) the same mirrors
21. 21.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
22. 22.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) yeast (d) two small mirrors
23. 23.True or false: aluminium foil reflects light poorly. (a) True (b) False
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
25. 25.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) upside down only (d) much bigger
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) turmeric powder (c) an empty juice carton (d) two small mirrors
28. 28.True or false: a battery cell is needed for the periscope. (a) True (b) False
29. 29.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
30. 30.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) black cloth (d) aluminium foil
31. 31.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) a dull brick (d) black cloth
32. 32.True or false: a dull brick reflects light poorly. (a) False (b) True
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
35. 35.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) a ruler (d) a pencil
37. 37.True or false: still clear water reflects light well. (a) False (b) True
38. 38.True or false: vinegar is needed for the periscope. (a) False (b) True
39. 39.True or false: a battery cell is not needed for the periscope. (a) False (b) True
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton

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