Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 907 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.True or false: yeast is needed for the periscope. (a) True (b) False
4. 4.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
5. 5.⚖️ 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 light (c) the angle of the mirrors
6. 6.True or false: a rough wooden board reflects light poorly. (a) True (b) False
7. 7.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
8. 8.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
9. 9.True or false: black cloth reflects light well. (a) False (b) True
10. 10.⚖️ 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 change it (b) we measure it (c) we keep it the same
11. 11.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) a dull brick (d) still clear water
12. 12.🔭 How many mirrors does a simple periscope use?
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a pencil (c) sticky tape (d) two small mirrors
14. 14.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) a ruler (d) turmeric powder
15. 15.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) aluminium foil (d) a shiny steel plate
16. 16.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
17. 17.⚖️ 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
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
19. 19.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a shiny steel plate (d) black cloth
20. 20.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a balloon (d) a ruler
21. 21.🔭 Which of these reflects light well? (a) a mirror (b) a rough wooden board (c) black cloth (d) dark soil
22. 22.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
24. 24.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the same light (c) the angle of the mirrors (d) the same carton
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) the same light (d) how clear the view is
27. 27.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a ruler (d) turmeric powder
28. 28.🧺 Which of these is not needed for the periscope? (a) yeast (b) a ruler (c) a pencil (d) two small mirrors
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.⚖️ 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 carton (c) the angle of the mirrors
31. 31.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) dark soil (d) black cloth
32. 32.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) aluminium foil (d) a shiny steel plate
34. 34.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds
35. 35.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) aluminium foil (d) a mirror
36. 36.⚖️ 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) False (b) True
37. 37.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) flipped left to right (d) much bigger
38. 38.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
39. 39.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
40. 40.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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