Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 273 · 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 reflects light poorly? (a) a mirror (b) still clear water (c) aluminium foil (d) a dull brick
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) a magnet
3. 3.⚖️ 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) False (b) True
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.True or false: a balloon is needed for the periscope. (a) False (b) True
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see over a wall (d) see in the dark
9. 9.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) an empty juice carton (d) a balloon
10. 10.True or false: black cloth reflects light well. (a) False (b) True
11. 11.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
12. 12.True or false: a battery cell is needed for the periscope. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) dark soil (d) a dull brick
14. 14.True or false: aluminium foil reflects light well. (a) True (b) False
15. 15.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
16. 16.True or false: dark soil reflects light well. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) still clear water (d) aluminium foil
18. 18.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) sticky tape (d) turmeric powder
20. 20.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
22. 22.True or false: a pencil is needed for the periscope. (a) True (b) False
23. 23.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a shiny steel plate (d) dark soil
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) yeast
25. 25.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) aluminium foil (d) a mirror
26. 26.🔭 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
27. 27.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) a dull brick (d) dark soil
28. 28.🔭 How many mirrors does a simple periscope use?
29. 29.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) a battery cell
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) vinegar (d) a pencil
31. 31.🔭 Which of these reflects light poorly? (a) black cloth (b) a shiny steel plate (c) aluminium foil (d) a mirror
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.True or false: two small mirrors is needed for the periscope. (a) True (b) False
34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
35. 35.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
36. 36.True or false: a magnet is not needed for the periscope. (a) False (b) True
37. 37.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) a pencil (d) sticky tape
39. 39.⚖️ 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 object we look at (c) the same carton (d) the same light
40. 40.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids