Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 49 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the object we look at (c) how clear the view is (d) the same carton
3. 3.True or false: aluminium foil reflects light poorly. (a) True (b) False
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) yeast (d) an empty juice carton
5. 5.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) aluminium foil (d) a mirror
6. 6.⚖️ 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 angle of the mirrors (c) the same light (d) how clear the view is
7. 7.⚖️ 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 change it (c) we measure it
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) sticky tape (d) a pencil
9. 9.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) two small mirrors (d) turmeric powder
10. 10.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a dull brick (c) still clear water (d) a shiny steel plate
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
12. 12.True or false: a dull brick reflects light well. (a) True (b) False
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors
14. 14.🔭 Which of these reflects light poorly? (a) black cloth (b) still clear water (c) a mirror (d) aluminium foil
15. 15.⚖️ 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 keep it the same (c) we change it
16. 16.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) a magnet
18. 18.True or false: still clear water reflects light poorly. (a) False (b) True
19. 19.⚖️ 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 measure it (c) we change it
20. 20.True or false: vinegar is not needed for the periscope. (a) False (b) True
21. 21.⚖️ 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
22. 22.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
23. 23.🔭 How many mirrors does a simple periscope use?
24. 24.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) two small mirrors (d) a battery cell
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) a balloon
28. 28.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
29. 29.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) black cloth (d) a mirror
30. 30.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) two small mirrors (c) sticky tape (d) a ruler
31. 31.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) yeast (d) a pencil
32. 32.True or false: dark soil reflects light poorly. (a) False (b) True
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
34. 34.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a pencil (c) turmeric powder (d) vinegar
35. 35.⚖️ 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 carton
36. 36.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) black cloth (d) a rough wooden board
37. 37.🛟 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
38. 38.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
39. 39.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) dark soil (d) a dull brick
40. 40.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall

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