Periscope STEM Project Worksheet

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

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