Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 581 · 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 reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) aluminium foil
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) two small mirrors (c) sticky tape (d) a pencil
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same mirrors (c) how clear the view is (d) the object we look at
4. 4.True or false: dark soil reflects light well. (a) True (b) False
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.True or false: a mirror reflects light poorly. (a) False (b) True
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
10. 10.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
11. 11.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
12. 12.⚖️ 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) the same light (c) the angle of the mirrors (d) how clear the view is
13. 13.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
14. 14.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) a magnet (d) a ruler
15. 15.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) a dull brick (d) aluminium foil
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
17. 17.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) dark soil
18. 18.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
19. 19.⚖️ 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
20. 20.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) black cloth (d) still clear water
23. 23.⚖️ 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
24. 24.⚖️ 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 keep it the same (c) we change it
25. 25.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
26. 26.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
27. 27.True or false: turmeric powder is needed for the periscope. (a) True (b) False
28. 28.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a mirror (d) black cloth
31. 31.True or false: vinegar is not needed for the periscope. (a) False (b) True
32. 32.⚖️ 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 change it (b) we keep it the same (c) we measure it
33. 33.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) magnetism (d) refraction
34. 34.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) a magnet (d) a pencil
37. 37.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a dull brick (d) a shiny steel plate
38. 38.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
39. 39.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True

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