Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 912 · 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? True or false: the angle of the mirrors is what we measure. (a) False (b) True
2. 2.True or false: still clear water reflects light well. (a) False (b) True
3. 3.True or false: a pencil is not needed for the periscope. (a) False (b) True
4. 4.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
5. 5.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) a dull brick
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
7. 7.⚖️ 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 object we look at (c) how clear the view is (d) the same carton
8. 8.True or false: a balloon is not needed for the periscope. (a) False (b) True
9. 9.True or false: a shiny steel plate reflects light well. (a) False (b) True
10. 10.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
11. 11.⚖️ 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) True (b) False
12. 12.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
13. 13.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) yeast (d) two small mirrors
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) black cloth (d) a shiny steel plate
17. 17.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) vinegar (d) sticky tape
19. 19.🔮 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
20. 20.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the same carton (c) how clear the view is (d) the same light
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) vinegar (d) two small mirrors
23. 23.⚖️ 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 measure it (c) we change it
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
25. 25.True or false: yeast is needed for the periscope. (a) False (b) True
26. 26.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a magnet (c) sticky tape (d) a ruler
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
29. 29.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
30. 30.True or false: vinegar is not needed for the periscope. (a) False (b) True
31. 31.⚖️ 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 keep it the same (b) we measure it (c) we change it
32. 32.True or false: a pencil is needed for the periscope. (a) True (b) False
33. 33.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
34. 34.True or false: a mirror reflects light poorly. (a) True (b) False
35. 35.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
36. 36.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) hear far sounds (d) see in the dark
38. 38.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a rough wooden board (d) aluminium foil
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
40. 40.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a rough wooden board (d) a mirror

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