Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 473 · 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.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a teaspoon (c) sugar (d) honey
3. 3.🧺 Do we need a paper clip for the paper helicopter? (a) needed (b) not needed
4. 4.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the order of the layers (b) how much of each liquid (c) the same glass (d) the same three liquids
5. 5.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
6. 6.🧺 Which of these is needed for the paper helicopter? (a) turmeric powder (b) a balloon (c) safety scissors (d) a magnet
7. 7.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) a magnet (d) water with food colour
8. 8.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a glass marble (d) a steel spoon
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🚀 Which of these goes forward? (a) water from the oars (b) the rowing boat (c) water a swimmer pushes (d) gas from the rocket
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
13. 13.True or false: drops on a cold glass is melting. (a) True (b) False
14. 14.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to splash everyone (c) to win a prize (d) to keep children safe
15. 15.True or false: two chairs is not needed for the balloon rocket. (a) True (b) False
16. 16.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
17. 17.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) at the very bottom (d) in the oil layer
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the time of day (c) the same glass (d) the same white paper
19. 19.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the kind of clay (c) the tub of water (d) the shape of the clay
21. 21.🛟 Which of these sinks in water? (a) a ball of clay (b) a feather (c) an empty capped bottle (d) an ice cube
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sheet of white paper (c) a clear glass of water (d) a sunny window
23. 23.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) True (b) False
25. 25.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) both of them (c) neither of them (d) the small pebble
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) False (b) True
27. 27.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
28. 28.🫗 Why does cooking oil float on top of water? (a) oil is sticky (b) oil is hot (c) oil is less dense (d) oil is heavier
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
30. 30.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) cooking oil (c) water with food colour (d) a mirror
31. 31.True or false: a pond icing over is freezing. (a) False (b) True
32. 32.🌈 In VIBGYOR, what number colour is green?
33. 33.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays (d) the same card
34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) how much of each liquid (c) the order of pouring
35. 35.True or false: air from the balloon goes backward. (a) False (b) True
36. 36.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so it does not fall (d) so the Sun moves
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) True (b) False
38. 38.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a drinking straw (d) a magnetic chess set
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) the same string (c) the same tape (d) distance it travels
40. 40.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) wipe them dry (c) pour more water (d) slide on them

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