Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 326 · 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? What do we do with “how clear the view is”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
3. 3.🔭 Which of these reflects light poorly? (a) black cloth (b) a mirror (c) aluminium foil (d) a shiny steel plate
4. 4.⚖️ 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
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🔭 Which of these reflects light well? (a) still clear water (b) black cloth (c) a dull brick (d) dark soil
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a ruler (c) two small mirrors (d) an empty juice carton
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) yeast (d) two small mirrors
9. 9.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a rough wooden board (d) a shiny steel plate
10. 10.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
11. 11.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.⚖️ 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 change it (b) we measure it (c) we keep it the same
13. 13.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) aluminium foil (d) a dull brick
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a rough wooden board (d) still clear water
16. 16.True or false: a battery cell is not needed for the periscope. (a) False (b) True
17. 17.True or false: a mirror reflects light poorly. (a) True (b) False
18. 18.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
19. 19.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the angle of the mirrors (c) the object we look at (d) the same light
21. 21.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
22. 22.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.⚖️ 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
24. 24.⚖️ 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) False (b) True
25. 25.True or false: a battery cell is needed for the periscope. (a) False (b) True
26. 26.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
27. 27.True or false: a magnet is needed for the periscope. (a) True (b) False
28. 28.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
29. 29.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
30. 30.True or false: still clear water reflects light well. (a) False (b) True
31. 31.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
32. 32.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
33. 33.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so light reaches the eye (d) so it looks shiny
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) an empty juice carton (d) a pencil
35. 35.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) aluminium foil
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same mirrors
37. 37.🧺 Which of these is needed for the periscope? (a) a balloon (b) sticky tape (c) a battery cell (d) vinegar
38. 38.True or false: a balloon is not needed for the periscope. (a) True (b) False
39. 39.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
40. 40.⚖️ 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

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