Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 873 · 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.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
5. 5.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) two small mirrors (d) vinegar
6. 6.⚖️ 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) False (b) True
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) a balloon (d) an empty juice carton
8. 8.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
9. 9.⚖️ 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) True (b) False
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.⚖️ 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
12. 12.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) black cloth (d) dark soil
13. 13.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) dark soil (c) still clear water (d) aluminium foil
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
20. 20.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
21. 21.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) sticky tape (d) a pencil
23. 23.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
24. 24.⚖️ 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 measure it (c) we keep it the same
25. 25.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
26. 26.⚖️ 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
27. 27.True or false: vinegar is needed for the periscope. (a) False (b) True
28. 28.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
29. 29.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a magnet (c) a battery cell (d) turmeric powder
30. 30.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
31. 31.True or false: a battery cell is needed for the periscope. (a) True (b) False
32. 32.True or false: dark soil reflects light poorly. (a) False (b) True
33. 33.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
34. 34.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) a pencil (d) a battery cell
35. 35.🔮 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
36. 36.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) aluminium foil
37. 37.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) a dull brick (d) a mirror
38. 38.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
39. 39.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
40. 40.🔭 How many mirrors does a simple periscope use?

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