Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 334 · 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.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
2. 2.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
3. 3.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
4. 4.True or false: a battery cell is not needed for the periscope. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a mirror (d) black cloth
6. 6.True or false: dark soil reflects light poorly. (a) False (b) True
7. 7.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a magnet (c) vinegar (d) yeast
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
9. 9.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) a magnet (d) an empty juice carton
10. 10.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) a pencil (d) an empty juice carton
11. 11.⚖️ 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
12. 12.⚖️ 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) how clear the view is (c) the same carton
13. 13.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) a ruler (d) a pencil
16. 16.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
18. 18.⚖️ 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 same light (c) how clear the view is
19. 19.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) refraction (d) evaporation
20. 20.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
22. 22.True or false: dark soil reflects light well. (a) False (b) True
23. 23.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
24. 24.True or false: a rough wooden board reflects light poorly. (a) True (b) False
25. 25.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
27. 27.⚖️ 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
28. 28.True or false: yeast is not needed for the periscope. (a) False (b) True
29. 29.⚖️ 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) the same mirrors (c) the object we look at (d) the same carton
30. 30.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
31. 31.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) black cloth
32. 32.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
33. 33.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.🔮 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
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a submarine crew (d) a farmer
37. 37.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) turmeric powder (c) a ruler (d) a pencil
38. 38.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) aluminium foil (d) a rough wooden board
40. 40.⚖️ 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

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