Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 736 · 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: how clear the view is is kept the same. (a) False (b) True
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) upside down only (d) flipped left to right
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
5. 5.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) vinegar (d) sticky tape
7. 7.True or false: black cloth reflects light poorly. (a) True (b) False
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a magnet (d) two small mirrors
9. 9.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) dark soil (d) a mirror
10. 10.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see germs (d) see in the dark
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same carton (c) the same mirrors (d) the angle of the mirrors
12. 12.🔭 How many mirrors does a simple periscope use?
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) a ruler (b) a pencil (c) an empty juice carton (d) a magnet
15. 15.True or false: a battery cell is not needed for the periscope. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a rough wooden board (d) a shiny steel plate
17. 17.⚖️ 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
18. 18.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same carton (c) the object we look at (d) how clear the view is
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
21. 21.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🔭 Which of these reflects light well? (a) a rough wooden board (b) still clear water (c) dark soil (d) a dull brick
24. 24.🔭 Which of these reflects light well? (a) dark soil (b) aluminium foil (c) a rough wooden board (d) a dull brick
25. 25.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
26. 26.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.True or false: a balloon is not needed for the periscope. (a) True (b) False
29. 29.True or false: a magnet is not needed for the periscope. (a) True (b) False
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) a pencil (d) a ruler
31. 31.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
32. 32.🔭 Which of these reflects light well? (a) a dull brick (b) a shiny steel plate (c) a rough wooden board (d) black cloth
33. 33.True or false: dark soil reflects light well. (a) False (b) True
34. 34.⚖️ 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 keep it the same (c) we measure it
35. 35.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) yeast (c) an empty juice carton (d) a pencil
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
37. 37.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
38. 38.⚖️ 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) False (b) True
39. 39.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a mirror (d) still clear water
40. 40.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) dark soil

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