Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 794 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) two small mirrors (c) an empty juice carton (d) a ruler
4. 4.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
5. 5.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
6. 6.⚖️ 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
7. 7.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
8. 8.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) a magnet (d) two small mirrors
9. 9.⚖️ 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 light (c) the angle of the mirrors
10. 10.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
11. 11.⚖️ 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
12. 12.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
15. 15.⚖️ 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 object we look at (c) the angle of the mirrors (d) the same carton
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
17. 17.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) a rough wooden board
18. 18.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
19. 19.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy
20. 20.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a dull brick (d) a rough wooden board
21. 21.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) dark soil (d) a mirror
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
23. 23.True or false: turmeric powder is needed for the periscope. (a) True (b) False
24. 24.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
26. 26.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) a ruler (d) a battery cell
27. 27.True or false: sticky tape is not needed for the periscope. (a) False (b) True
28. 28.⚖️ 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
29. 29.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
31. 31.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) a ruler
33. 33.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) two small mirrors (d) a magnet
35. 35.True or false: a balloon is needed for the periscope. (a) True (b) False
36. 36.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) a pencil (d) a battery cell
37. 37.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a rough wooden board (d) aluminium foil
38. 38.True or false: a pencil is needed for the periscope. (a) True (b) False
39. 39.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) still clear water (d) dark soil
40. 40.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) aluminium foil

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