Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 296 · 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.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) two small mirrors (d) yeast
2. 2.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a dull brick (d) a rough wooden board
3. 3.True or false: dark soil reflects light poorly. (a) False (b) True
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.True or false: a pencil is not needed for the periscope. (a) False (b) True
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) sticky tape (d) vinegar
7. 7.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) a battery cell (d) vinegar
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) turmeric powder (d) an empty juice carton
9. 9.⚖️ 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
10. 10.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) still clear water
11. 11.True or false: a battery cell is not needed for the periscope. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a mirror (d) dark soil
13. 13.⚖️ 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
14. 14.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a rough wooden board (d) aluminium foil
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
16. 16.⚖️ 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 measure it (c) we change it
17. 17.True or false: aluminium foil reflects light well. (a) False (b) True
18. 18.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) a shiny steel plate (d) aluminium foil
19. 19.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
20. 20.⚖️ 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) the angle of the mirrors (c) how clear the view is
21. 21.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
22. 22.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.True or false: a magnet is not needed for the periscope. (a) False (b) True
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a pencil (c) sticky tape (d) an empty juice carton
26. 26.🛟 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
27. 27.⚖️ 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
28. 28.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) an empty juice carton (d) yeast
30. 30.True or false: a dull brick reflects light poorly. (a) False (b) True
31. 31.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a battery cell (d) a ruler
34. 34.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
35. 35.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
36. 36.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
37. 37.True or false: a rough wooden board reflects light well. (a) True (b) False
38. 38.True or false: black cloth reflects light poorly. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) a mirror (d) a shiny steel plate
40. 40.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) dark soil (d) a mirror

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