Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 978 · 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.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) a balloon (d) an empty juice carton
2. 2.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
3. 3.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
4. 4.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
5. 5.⚖️ 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) True (b) False
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) black cloth (d) a shiny steel plate
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) vinegar (c) an empty juice carton (d) two small mirrors
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) a ruler (d) a pencil
11. 11.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
12. 12.True or false: a battery cell is not needed for the periscope. (a) False (b) True
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.True or false: a ruler is not needed for the periscope. (a) True (b) False
15. 15.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) a pencil (d) yeast
16. 16.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) still clear water (d) black cloth
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 90 degrees (d) 10 degrees
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a dull brick (d) a mirror
21. 21.True or false: a mirror reflects light well. (a) False (b) True
22. 22.True or false: still clear water reflects light well. (a) False (b) True
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the object we look at (c) the angle of the mirrors
24. 24.True or false: a rough wooden board reflects light poorly. (a) True (b) False
25. 25.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a pencil (c) an empty juice carton (d) a ruler
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) True (b) False
27. 27.True or false: aluminium foil reflects light poorly. (a) False (b) True
28. 28.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a mirror
29. 29.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
30. 30.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) still clear water (d) a dull brick
31. 31.⚖️ 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 change it (c) we measure it
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a magnet (d) a ruler
35. 35.🔭 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
36. 36.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same mirrors
38. 38.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) hear far sounds (d) see over a wall
39. 39.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
40. 40.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) nothing at all (d) taller walls

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