Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 308 · 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.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
2. 2.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) a pencil (d) a balloon
3. 3.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
5. 5.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
6. 6.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
7. 7.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) dark soil (d) a shiny steel plate
8. 8.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a shiny steel plate (d) black cloth
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
10. 10.True or false: sticky tape is not needed for the periscope. (a) False (b) True
11. 11.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a friend’s toy (d) a wall
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) sticky tape (d) an empty juice carton
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
15. 15.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) still clear water (d) a mirror
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
19. 19.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
20. 20.True or false: two small mirrors is needed for the periscope. (a) False (b) True
21. 21.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
22. 22.True or false: a mirror reflects light well. (a) False (b) True
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same mirrors (c) the same light (d) how clear the view is
24. 24.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
25. 25.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
26. 26.True or false: black cloth reflects light poorly. (a) False (b) True
27. 27.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
29. 29.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.⚖️ 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 same light (d) the same mirrors
31. 31.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) still clear water (d) a dull brick
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
34. 34.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
35. 35.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) aluminium foil
36. 36.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) a mirror (d) black cloth
37. 37.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a mirror (d) black cloth
38. 38.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) a battery cell (d) a ruler
39. 39.⚖️ 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) how clear the view is (c) the angle of the mirrors
40. 40.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False

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