Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 349 · 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.⚖️ 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 change it (b) we keep it the same (c) we measure it
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.True or false: a rough wooden board reflects light well. (a) False (b) True
4. 4.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) yeast (d) two small mirrors
5. 5.⚖️ 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
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
7. 7.True or false: a battery cell is needed for the periscope. (a) True (b) False
8. 8.True or false: turmeric powder is needed for the periscope. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a rough wooden board (d) still clear water
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) black cloth (d) still clear water
12. 12.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
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) False (b) True
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) still clear water (d) a shiny steel plate
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 180 degrees (d) 10 degrees
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
19. 19.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
22. 22.True or false: black cloth 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.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
25. 25.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) a rough wooden board (d) dark soil
27. 27.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) aluminium foil (d) still clear water
28. 28.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) turmeric powder (c) a pencil (d) two small mirrors
30. 30.True or false: aluminium foil reflects light well. (a) False (b) True
31. 31.True or false: yeast is needed for the periscope. (a) True (b) False
32. 32.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) a pencil (d) an empty juice carton
34. 34.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) an empty juice carton (d) a magnet
35. 35.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
36. 36.True or false: still clear water reflects light poorly. (a) False (b) True
37. 37.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
38. 38.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
39. 39.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
40. 40.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed

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