Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 974 · 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: turmeric powder is not needed for the periscope. (a) False (b) True
2. 2.True or false: a battery cell is not needed for the periscope. (a) True (b) False
3. 3.True or false: still clear water reflects light poorly. (a) False (b) True
4. 4.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) flipped left to right (d) much bigger
6. 6.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
7. 7.⚖️ 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) the angle of the mirrors (c) how clear the view is
8. 8.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a battery cell (d) sticky tape
9. 9.⚖️ 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) True (b) False
10. 10.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
11. 11.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) big wall mirrors (d) loose glass panes
12. 12.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
13. 13.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
14. 14.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a balloon (d) a pencil
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
16. 16.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so light reaches the eye (d) so it looks shiny
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
20. 20.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) still clear water (d) a rough wooden board
21. 21.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a rough wooden board
23. 23.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) two small mirrors (d) a pencil
24. 24.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
25. 25.True or false: a magnet is not needed for the periscope. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) still clear water (d) aluminium foil
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.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a dull brick (d) a rough wooden board
29. 29.True or false: aluminium foil reflects light poorly. (a) True (b) False
30. 30.True or false: a dull brick reflects light poorly. (a) False (b) True
31. 31.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) a magnet (d) two small mirrors
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
34. 34.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a rough wooden board (d) a shiny steel plate
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.🔭 Which of these reflects light well? (a) aluminium foil (b) a rough wooden board (c) a dull brick (d) black cloth
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) how clear the view is (c) the object we look at (d) the same mirrors
39. 39.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a dull brick (d) still clear water
40. 40.⚖️ 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 object we look at (c) the same carton (d) the same mirrors

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