Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 47 · 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.True or false: a steel spoon falls slowly through the air. (a) False (b) True
2. 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
3. 3.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it sinks (d) it turns blue
4. 4.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
5. 5.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to keep children safe (d) to splash everyone
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.🌈 In VIBGYOR, what number colour is yellow?
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a results table (d) a battery cell
9. 9.True or false: a cotton thread lets water climb up it. (a) False (b) True
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) the way we turn it (c) whether the card stays
11. 11.🧺 Which of these is needed for the density tower? (a) honey (b) a magnet (c) a battery cell (d) a mirror
12. 12.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) yeast
13. 13.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.True or false: sand dissolves in water. (a) True (b) False
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
16. 16.⚖️ 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) True (b) False
17. 17.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
18. 18.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
19. 19.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) cling film (c) a small cup (d) yeast
20. 20.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
21. 21.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) sunlight (d) magnetism
22. 22.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a battery cell (c) a mirror (d) small test objects
23. 23.True or false: a glass marble is less dense than water. (a) False (b) True
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the kind of sugar (c) the amount of water (d) the water temperature
25. 25.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
26. 26.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) yeast (c) safety scissors (d) a magnet
27. 27.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a mirror (d) a glass of water
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the length of the blades (b) the drop height (c) the person dropping (d) the kind of paper
30. 30.🌈 How many colours do we name in a rainbow (VIBGYOR)?
31. 31.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a comb (c) sugar (d) honey
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) sun or shade (b) the time we wait (c) the amount of water (d) how many drops form
33. 33.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) run around the tub (d) play near a deep pond
34. 34.🔍 Which is the odd one out? (a) a sugar cube (b) a rubber eraser (c) a plastic ruler (d) a steel spoon
35. 35.🍯 Which of these is denser than water? (a) cooking oil (b) a pebble (c) a cork (d) an ice cube
36. 36.True or false: a rubber eraser does not let water climb. (a) False (b) True
37. 37.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) False (b) True
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the tub of water
40. 40.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a big bowl (c) a magnet (d) a balloon

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