Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 598 · 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: a shiny steel plate reflects light poorly. (a) False (b) True
2. 2.True or false: a mirror reflects light well. (a) False (b) True
3. 3.True or false: a ruler is needed for the periscope. (a) True (b) False
4. 4.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) vinegar (d) a pencil
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.True or false: yeast is needed for the periscope. (a) False (b) True
7. 7.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
10. 10.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
11. 11.🧺 Which of these is needed for the periscope? (a) yeast (b) a ruler (c) a magnet (d) a balloon
12. 12.True or false: dark soil reflects light poorly. (a) False (b) True
13. 13.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) two small mirrors (d) yeast
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) turmeric powder (d) two small mirrors
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) a battery cell
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) sticky tape (d) a ruler
17. 17.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
18. 18.True or false: a pencil is not needed for the periscope. (a) False (b) True
19. 19.⚖️ 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
20. 20.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
21. 21.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
22. 22.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a battery cell (d) a ruler
23. 23.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) a mirror (d) black cloth
24. 24.⚖️ 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 carton (c) the same mirrors (d) the same light
25. 25.True or false: a balloon is not needed for the periscope. (a) False (b) True
26. 26.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) a dull brick (d) aluminium foil
27. 27.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a rough wooden board (d) still clear water
28. 28.True or false: a ruler is not needed for the periscope. (a) True (b) False
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
32. 32.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a mirror (d) dark soil
33. 33.True or false: black cloth reflects light well. (a) True (b) False
34. 34.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
35. 35.True or false: aluminium foil reflects light well. (a) False (b) True
36. 36.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so light reaches the eye (d) so it looks shiny
37. 37.🧺 Which of these is not needed for the periscope? (a) a balloon (b) an empty juice carton (c) sticky tape (d) a ruler
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
39. 39.True or false: a battery cell is not needed for the periscope. (a) True (b) False
40. 40.⚖️ 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) False (b) True

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