Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 664 · 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 is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) a battery cell (d) sticky tape
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a magnet (d) sticky tape
4. 4.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.True or false: two small mirrors is needed for the periscope. (a) True (b) False
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same mirrors
8. 8.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
9. 9.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) two small mirrors (d) turmeric powder
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) a battery cell
14. 14.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
15. 15.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) a mirror (d) black cloth
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the same light (d) the same carton
17. 17.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) hear far sounds (d) see germs
18. 18.True or false: a pencil is not needed for the periscope. (a) True (b) False
19. 19.True or false: turmeric powder is needed for the periscope. (a) True (b) False
20. 20.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
21. 21.True or false: a rough wooden board reflects light poorly. (a) False (b) True
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
23. 23.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) a rough wooden board (d) aluminium foil
24. 24.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a ruler (d) a magnet
25. 25.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) a dull brick
26. 26.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
27. 27.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
28. 28.True or false: a ruler is needed for the periscope. (a) True (b) False
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) vinegar (d) a pencil
31. 31.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) a mirror (d) aluminium foil
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the object we look at (c) the angle of the mirrors (d) the same mirrors
34. 34.🔮 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
35. 35.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
36. 36.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
37. 37.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
38. 38.True or false: a pencil is needed for the periscope. (a) True (b) False
39. 39.🧺 Which of these is needed for the periscope? (a) a ruler (b) a balloon (c) turmeric powder (d) vinegar
40. 40.⚖️ 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 measure it (b) we keep it the same (c) we change it

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