Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 675 · 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 two small mirrors 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 object we look at is what we measure. (a) False (b) True
3. 3.True or false: a battery cell is needed for the periscope. (a) True (b) False
4. 4.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 10 degrees (d) 90 degrees
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
6. 6.True or false: turmeric powder is needed for the periscope. (a) True (b) False
7. 7.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
8. 8.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
9. 9.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) upside down only (d) much bigger
12. 12.⚖️ 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
13. 13.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
14. 14.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
15. 15.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a rough wooden board (c) dark soil (d) a dull brick
16. 16.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) a ruler (d) a pencil
18. 18.⚖️ 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) False (b) True
19. 19.True or false: still clear water reflects light poorly. (a) False (b) True
20. 20.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a dull brick (c) a shiny steel plate (d) still clear water
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) sticky tape (d) a magnet
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) vinegar
23. 23.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) sticky tape (c) a balloon (d) a battery cell
24. 24.True or false: a magnet is not needed for the periscope. (a) True (b) False
25. 25.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
27. 27.⚖️ 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 carton (c) the same light (d) how clear the view is
28. 28.🔭 Which of these reflects light poorly? (a) black cloth (b) a mirror (c) a shiny steel plate (d) aluminium foil
29. 29.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a mirror (d) dark soil
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
31. 31.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a dull brick (d) still clear water
32. 32.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
33. 33.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
34. 34.True or false: a mirror reflects light poorly. (a) False (b) True
35. 35.True or false: a balloon is needed for the periscope. (a) True (b) False
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
37. 37.True or false: yeast is needed for the periscope. (a) False (b) True
38. 38.⚖️ 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
39. 39.🔭 How many times does light bounce off a mirror in a simple periscope?
40. 40.⚖️ 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 measure it (c) we keep it the same

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