Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 717 · 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 is the odd one out? (a) a mirror (b) still clear water (c) a dull brick (d) a shiny steel plate
2. 2.True or false: a rough wooden board reflects light poorly. (a) False (b) True
3. 3.⚖️ 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 carton (b) the same light (c) the same mirrors (d) the angle of the mirrors
4. 4.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) two small mirrors (d) turmeric powder
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) a pencil (d) an empty juice carton
6. 6.🛟 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
7. 7.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
8. 8.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) dark soil (d) black cloth
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.True or false: two small mirrors is needed for the periscope. (a) False (b) True
11. 11.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
12. 12.True or false: yeast is needed for the periscope. (a) True (b) False
13. 13.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see over a wall (d) see germs
14. 14.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a rough wooden board (d) still clear water
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) a ruler (d) two small mirrors
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) a ruler (d) an empty juice carton
17. 17.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a pilot in a plane (d) a submarine crew
18. 18.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) yeast (d) two small mirrors
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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
22. 22.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
23. 23.⚖️ 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
24. 24.True or false: aluminium foil reflects light well. (a) True (b) False
25. 25.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
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 same mirrors (c) the same carton (d) how clear the view is
27. 27.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
28. 28.True or false: a mirror reflects light well. (a) False (b) True
29. 29.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
30. 30.⚖️ 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 measure it (c) we change it
31. 31.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction
32. 32.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) vinegar (d) two small mirrors
34. 34.True or false: a dull brick reflects light well. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) aluminium foil (d) black cloth
36. 36.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) yeast (d) a battery cell
37. 37.⚖️ 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 object we look at
38. 38.⚖️ 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
39. 39.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
40. 40.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) upside down only (d) much bigger

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