Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 401 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a medicine dropper (d) a compass needle
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of colour
3. 3.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) refraction (d) magnetism
4. 4.True or false: a magnetic chess set works by magnetism. (a) True (b) False
5. 5.🧺 Do we need ice cubes for the water cycle bowl? (a) needed (b) not needed
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is kept the same. (a) False (b) True
7. 7.True or false: honey is needed for the density tower. (a) True (b) False
8. 8.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
9. 9.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a balloon (c) a magnet (d) cooking oil
11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
12. 12.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
13. 13.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) some water evaporates (c) it turns to salt (d) the water increases
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a stiff postcard (c) a towel (d) a glass of water
15. 15.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) a magnet (d) the cold water
16. 16.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a sundial (c) a fridge magnet (d) a balloon rocket
17. 17.🔮 Predict: you fold the two blades the other way. What changes? (a) it does not fall (b) it falls upward (c) it spins the other way (d) it turns blue
18. 18.True or false: turmeric powder is not needed for the water cycle bowl. (a) True (b) False
19. 19.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) powdered sugar (d) a big sugar cube
20. 20.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it turns into a kite (c) it can pop loudly (d) it changes colour
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the kind of flower (b) time for colour to show (c) the length of the stem
22. 22.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) no change at all (c) less friction (d) more friction, less far
23. 23.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) turmeric powder (b) safety scissors (c) a strip of paper (d) a paper clip
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) a sheet of white paper (d) bright sunlight
25. 25.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same glass (b) how full the glass is (c) whether the card stays (d) the same card
27. 27.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) turmeric powder (c) a battery cell (d) sticky tape
28. 28.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) yeast (c) ice cubes (d) a big bowl
29. 29.True or false: yeast is needed for the balloon rocket. (a) False (b) True
30. 30.🎈 When does the balloon rocket stop? (a) when it turns blue (b) it never stops (c) when it gets cold (d) when the air runs out
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same window (b) brightness of rainbow (c) the amount of water (d) the time of day
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
34. 34.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) neither of them (d) powdered sugar
35. 35.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
36. 36.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
37. 37.True or false: air from the balloon goes backward. (a) False (b) True
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the tub of water (b) the shape of the clay (c) the amount of clay (d) whether it floats
39. 39.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) water a swimmer pushes (d) the rowing boat
40. 40.🧺 Which of these is needed for the density tower? (a) a balloon (b) water with food colour (c) a magnet (d) yeast

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