Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 600 · 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 reflects light well? (a) aluminium foil (b) a dull brick (c) a rough wooden board (d) dark soil
2. 2.⚖️ 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
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the object we look at (c) how clear the view is (d) the same mirrors
4. 4.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
5. 5.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
7. 7.🔮 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
8. 8.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a mirror (d) dark soil
9. 9.True or false: a magnet is not needed for the periscope. (a) True (b) False
10. 10.⚖️ 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
11. 11.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a rough wooden board (d) still clear water
13. 13.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
14. 14.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the angle of the mirrors (c) the same carton (d) how clear the view is
16. 16.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a pilot in a plane (d) a baker
17. 17.True or false: a shiny steel plate reflects light well. (a) False (b) True
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a wall (d) a tree
19. 19.True or false: still clear water reflects light poorly. (a) False (b) True
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a ruler (d) vinegar
21. 21.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) black cloth
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) sticky tape (d) turmeric powder
24. 24.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
27. 27.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) a mirror (d) still clear water
28. 28.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
29. 29.⚖️ 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
30. 30.🔭 Which of these reflects light poorly? (a) black cloth (b) still clear water (c) aluminium foil (d) a shiny steel plate
31. 31.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
32. 32.🔭 How many mirrors does a simple periscope use?
33. 33.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.⚖️ 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 change it (b) we keep it the same (c) we measure it
35. 35.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) refraction (d) evaporation
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) aluminium foil
38. 38.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see in the dark (d) see germs
39. 39.True or false: two small mirrors is needed for the periscope. (a) False (b) True
40. 40.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a dull brick (d) a shiny steel plate

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