Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 281 · 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: aluminium foil reflects light poorly. (a) True (b) False
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
4. 4.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🔮 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
7. 7.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
8. 8.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) sticky tape (d) a magnet
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a pencil (c) an empty juice carton (d) a ruler
10. 10.⚖️ 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
11. 11.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
13. 13.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
14. 14.True or false: still clear water reflects light well. (a) True (b) False
15. 15.⚖️ 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 keep it the same (b) we change it (c) we measure it
16. 16.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
18. 18.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a dull brick (d) aluminium foil
19. 19.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) black cloth (d) a shiny steel plate
22. 22.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) still clear water (d) a mirror
23. 23.⚖️ 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 same light (d) the same carton
24. 24.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) yeast (d) a ruler
25. 25.True or false: two small mirrors is needed for the periscope. (a) True (b) False
26. 26.True or false: a ruler is not needed for the periscope. (a) True (b) False
27. 27.True or false: sticky tape is needed for the periscope. (a) True (b) False
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a pencil (c) sticky tape (d) a ruler
29. 29.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
30. 30.True or false: a ruler is needed for the periscope. (a) False (b) True
31. 31.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
32. 32.🧺 Which of these is needed for the periscope? (a) vinegar (b) a ruler (c) yeast (d) a magnet
33. 33.⚖️ 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
34. 34.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see in the dark (d) see germs
35. 35.⚖️ 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) False (b) True
36. 36.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a ruler (d) a battery cell
37. 37.⚖️ 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 carton (c) the object we look at (d) how clear the view is
38. 38.True or false: a pencil is not needed for the periscope. (a) True (b) False
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
40. 40.⚖️ 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

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