Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 362 · 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 is the odd one out? (a) a dull brick (b) black cloth (c) aluminium foil (d) dark soil
2. 2.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
3. 3.True or false: a rough wooden board reflects light well. (a) True (b) False
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) loose glass panes (d) broken glass bits
6. 6.⚖️ 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
7. 7.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) turmeric powder (d) an empty juice carton
8. 8.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
9. 9.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
10. 10.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see in the dark (d) see germs
11. 11.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) a mirror (d) still clear water
12. 12.True or false: two small mirrors is needed for the periscope. (a) False (b) True
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors (d) the object we look at
14. 14.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) so it can float (d) to make it heavy
15. 15.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) aluminium foil
16. 16.True or false: a magnet is needed for the periscope. (a) False (b) True
17. 17.True or false: a pencil is not needed for the periscope. (a) True (b) False
18. 18.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
21. 21.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) evaporation (d) reflection
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the object we look at (c) how clear the view is
23. 23.True or false: a rough wooden board reflects light poorly. (a) False (b) True
24. 24.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
25. 25.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a dull brick (d) a mirror
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
28. 28.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
29. 29.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
30. 30.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) a rough wooden board
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
32. 32.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.True or false: a ruler is needed for the periscope. (a) False (b) True
34. 34.True or false: still clear water reflects light poorly. (a) True (b) False
35. 35.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) a rough wooden board (d) black cloth
36. 36.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a dull brick (d) a rough wooden board
37. 37.True or false: a ruler is not needed for the periscope. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a dull brick (d) a shiny steel plate
39. 39.🧺 Which of these is needed for the periscope? (a) yeast (b) an empty juice carton (c) vinegar (d) a battery cell
40. 40.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False

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