Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 826 · 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.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
3. 3.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
4. 4.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) dark soil (d) black cloth
5. 5.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) aluminium foil
6. 6.True or false: yeast is needed for the periscope. (a) True (b) False
7. 7.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
8. 8.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.🧺 Which of these is not needed for the periscope? (a) a ruler (b) turmeric powder (c) sticky tape (d) a pencil
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.🔭 Does dark soil 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? True or false: the object we look at is kept the same. (a) True (b) False
13. 13.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) an empty juice carton (d) yeast
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) an empty juice carton (d) sticky tape
15. 15.True or false: a rough wooden board reflects light poorly. (a) True (b) False
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) sticky tape (d) a magnet
17. 17.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
18. 18.🛟 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
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the same light (c) the same mirrors (d) the angle of the mirrors
20. 20.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a submarine crew (d) a baker
21. 21.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a dull brick (d) a rough wooden board
22. 22.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.⚖️ 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
24. 24.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 90 degrees (d) 180 degrees
25. 25.⚖️ 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 light
26. 26.True or false: still clear water reflects light well. (a) False (b) True
27. 27.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
28. 28.🧺 Which of these is not needed for the periscope? (a) a magnet (b) two small mirrors (c) an empty juice carton (d) a ruler
29. 29.True or false: a pencil is needed for the periscope. (a) True (b) False
30. 30.True or false: a mirror reflects light poorly. (a) False (b) True
31. 31.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
33. 33.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
34. 34.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) dark soil (d) a mirror
35. 35.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so it can float (d) so light reaches the eye
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) an empty juice carton (d) yeast
37. 37.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a ruler (c) an empty juice carton (d) sticky tape
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) an empty juice carton (d) a balloon
39. 39.🔭 Which of these reflects light poorly? (a) dark soil (b) a mirror (c) still clear water (d) a shiny steel plate
40. 40.🔭 How many times does light bounce off a mirror in a simple periscope?

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