Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 649 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚖️ 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 light (d) the same carton
3. 3.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) a pencil (d) a balloon
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
5. 5.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
6. 6.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) two small mirrors (d) a magnet
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
8. 8.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a mirror (c) still clear water (d) a shiny steel plate
9. 9.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
11. 11.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a pencil (c) an empty juice carton (d) a ruler
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) yeast (d) an empty juice carton
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) a balloon
16. 16.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a dull brick (d) still clear water
17. 17.⚖️ 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 keep it the same (b) we change it (c) we measure it
18. 18.🔮 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
19. 19.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a mirror (d) dark soil
20. 20.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) turmeric powder (c) sticky tape (d) an empty juice carton
21. 21.True or false: dark soil reflects light poorly. (a) False (b) True
22. 22.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) dark soil
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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) a ruler (d) a pencil
25. 25.True or false: dark soil reflects light well. (a) False (b) True
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) vinegar (d) an empty juice carton
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) an empty juice carton (d) two small mirrors
28. 28.True or false: two small mirrors is needed for the periscope. (a) False (b) True
29. 29.True or false: a mirror reflects light well. (a) False (b) True
30. 30.⚖️ 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) how clear the view is (c) the same mirrors (d) the same carton
31. 31.⚖️ 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) False (b) True
32. 32.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) sticky tape (d) a magnet
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
35. 35.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
37. 37.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) a pencil (d) a balloon
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.True or false: black cloth reflects light well. (a) True (b) False

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