Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 188 · 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.True or false: two small mirrors is needed for the periscope. (a) False (b) True
2. 2.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.⚖️ 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
4. 4.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
5. 5.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) yeast (d) two small mirrors
8. 8.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
9. 9.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) still clear water (d) a shiny steel plate
10. 10.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
11. 11.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
12. 12.⚖️ 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 same light (c) the same mirrors (d) the angle of the mirrors
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a ruler (c) an empty juice carton (d) sticky tape
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) an empty juice carton (d) two small mirrors
15. 15.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) black cloth
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) turmeric powder (d) an empty juice carton
17. 17.True or false: a balloon is needed for the periscope. (a) True (b) False
18. 18.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) magnetism (d) refraction
19. 19.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) two small mirrors (d) turmeric powder
20. 20.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) black cloth (d) aluminium foil
21. 21.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it looks shiny (d) so it can float
22. 22.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
23. 23.True or false: a mirror reflects light poorly. (a) True (b) False
24. 24.🔭 Which of these reflects light well? (a) still clear water (b) a rough wooden board (c) dark soil (d) a dull brick
25. 25.🔭 How many mirrors does a simple periscope use?
26. 26.⚖️ 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 same mirrors (c) the angle of the mirrors
27. 27.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
28. 28.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
29. 29.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a dull brick (d) still clear water
30. 30.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) only short walls (d) the ground
32. 32.⚖️ 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 mirrors (b) the object we look at (c) the angle of the mirrors (d) the same light
33. 33.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) black cloth (d) a mirror
34. 34.🔭 Which of these reflects light poorly? (a) a dull brick (b) aluminium foil (c) a mirror (d) a shiny steel plate
35. 35.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.True or false: dark soil reflects light poorly. (a) False (b) True
39. 39.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
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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