Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 990 · 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.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a pencil (d) yeast
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.⚖️ 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 same mirrors (c) the angle of the mirrors
5. 5.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
7. 7.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
8. 8.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
9. 9.🧺 Which of these is not needed for the periscope? (a) a ruler (b) turmeric powder (c) two small mirrors (d) a pencil
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the object we look at (d) the same carton
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) two small mirrors (d) a ruler
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) two small mirrors (d) a ruler
13. 13.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) yeast (d) sticky tape
14. 14.True or false: two small mirrors is needed for the periscope. (a) False (b) True
15. 15.True or false: turmeric powder is needed for the periscope. (a) True (b) False
16. 16.⚖️ 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 measure it (b) we keep it the same (c) we change it
17. 17.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a balloon
18. 18.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) dark soil (d) still clear water
19. 19.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 180 degrees (d) 90 degrees
20. 20.True or false: yeast is needed for the periscope. (a) False (b) True
21. 21.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
22. 22.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) a dull brick
23. 23.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) a ruler (d) two small mirrors
25. 25.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
26. 26.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
28. 28.True or false: a rough wooden board reflects light well. (a) False (b) True
29. 29.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) loose glass panes (d) broken glass bits
30. 30.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a rough wooden board (d) still clear water
32. 32.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a dull brick (c) black cloth (d) dark soil
33. 33.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) a pencil (d) a battery cell
35. 35.True or false: still clear water reflects light poorly. (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 same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🔮 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
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
39. 39.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
40. 40.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction

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