Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 774 · 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.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
2. 2.🧺 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) two small mirrors
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a shiny steel plate (d) dark soil
6. 6.⚖️ 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 angle of the mirrors (c) the object we look at (d) the same light
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a ruler (c) an empty juice carton (d) a pencil
8. 8.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) a shiny steel plate (d) a mirror
9. 9.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
10. 10.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
11. 11.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.⚖️ 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 change it (b) we measure it (c) we keep it the same
13. 13.🧺 Which of these is needed for the periscope? (a) a magnet (b) an empty juice carton (c) a balloon (d) turmeric powder
14. 14.⚖️ 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) True (b) False
15. 15.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) sticky tape (d) a ruler
17. 17.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) aluminium foil (d) a rough wooden board
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same carton (c) the angle of the mirrors (d) the same mirrors
20. 20.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
21. 21.🔮 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
22. 22.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
23. 23.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
24. 24.True or false: a mirror reflects light well. (a) False (b) True
25. 25.True or false: dark soil reflects light well. (a) True (b) False
26. 26.⚖️ 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 keep it the same (c) we change it
27. 27.⚖️ 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) True (b) False
28. 28.True or false: yeast is not needed for the periscope. (a) False (b) True
29. 29.⚖️ 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
30. 30.True or false: a pencil is needed for the periscope. (a) False (b) True
31. 31.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
32. 32.True or false: still clear water reflects light well. (a) True (b) False
33. 33.True or false: a balloon is needed for the periscope. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) still clear water (d) a mirror
35. 35.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
36. 36.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
37. 37.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a shiny steel plate
38. 38.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) turmeric powder (d) sticky tape
39. 39.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True

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