Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 6 · 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) sticky tape (b) a magnet (c) a battery cell (d) yeast
2. 2.True or false: still clear water reflects light poorly. (a) True (b) False
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) a ruler (d) an empty juice carton
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
5. 5.⚖️ 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
6. 6.True or false: aluminium foil reflects light well. (a) True (b) False
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) an empty juice carton (d) a ruler
8. 8.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
9. 9.⚖️ 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) True (b) False
10. 10.True or false: a mirror reflects light poorly. (a) True (b) False
11. 11.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
12. 12.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) a balloon (d) an empty juice carton
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
14. 14.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) dark soil (d) a mirror
15. 15.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
16. 16.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
17. 17.🔮 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
18. 18.⚖️ 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 change it (c) we keep it the same
19. 19.True or false: still clear water reflects light well. (a) True (b) False
20. 20.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
21. 21.🔭 How many mirrors does a simple periscope use?
22. 22.True or false: a balloon is not needed for the periscope. (a) False (b) True
23. 23.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
24. 24.True or false: aluminium foil reflects light poorly. (a) False (b) True
25. 25.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) a magnet (d) sticky tape
26. 26.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.True or false: dark soil reflects light well. (a) True (b) False
28. 28.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
29. 29.True or false: a battery cell is needed for the periscope. (a) True (b) False
30. 30.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane
31. 31.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) dark soil (d) a mirror
33. 33.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) a dull brick (d) black cloth
34. 34.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) a mirror
35. 35.True or false: a pencil is not needed for the periscope. (a) False (b) True
36. 36.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) to make it heavy (d) so it looks shiny
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.⚖️ 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 keep it the same (c) we change it
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) dark soil

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