Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 997 · 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 a magnet for the periscope? (a) needed (b) not needed
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
3. 3.True or false: a rough wooden board reflects light well. (a) False (b) True
4. 4.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a rough wooden board (d) a mirror
5. 5.⚖️ 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 measure it (c) we keep it the same
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
8. 8.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) turmeric powder (d) a ruler
13. 13.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
14. 14.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a battery cell (c) a ruler (d) two small mirrors
15. 15.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds
18. 18.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) a ruler (d) vinegar
19. 19.🔭 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
20. 20.🧺 Do we need yeast 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.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) dark soil
23. 23.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
24. 24.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) two small mirrors (c) an empty juice carton (d) a pencil
26. 26.🔭 How many times does light bounce off a mirror in a simple periscope?
27. 27.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) still clear water
28. 28.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
29. 29.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) yeast
30. 30.⚖️ 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) how clear the view is (c) the same mirrors (d) the same light
31. 31.⚖️ 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
32. 32.🔭 Which of these reflects light poorly? (a) a mirror (b) black cloth (c) still clear water (d) aluminium foil
33. 33.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a balloon (c) two small mirrors (d) an empty juice carton
34. 34.True or false: a shiny steel plate reflects light well. (a) False (b) True
35. 35.True or false: a battery cell is needed for the periscope. (a) False (b) True
36. 36.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
37. 37.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) upside down only (d) much bigger
38. 38.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) black cloth (d) dark soil
39. 39.True or false: a balloon is not needed for the periscope. (a) True (b) False
40. 40.True or false: aluminium foil reflects light poorly. (a) False (b) True

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