Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 684 · 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.🔮 Predict: you fold the two blades the other way. What changes? (a) it turns blue (b) it spins the other way (c) it falls upward (d) it does not fall
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) yeast (d) bright sunlight
3. 3.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
4. 4.🛟 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
5. 5.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
6. 6.True or false: cooking oil is denser than water. (a) True (b) False
7. 7.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a strip of paper (c) a magnet (d) safety scissors
8. 8.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) time to reach the floor (b) the kind of paper (c) the length of the blades (d) the paper clip
10. 10.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
11. 11.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) a magnet (c) a pencil (d) a balloon
12. 12.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
13. 13.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
14. 14.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a balloon rocket (c) a fridge magnet (d) a sundial
15. 15.True or false: cold water is needed for the dissolving test. (a) True (b) False
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
17. 17.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🌈 In VIBGYOR, what number colour is indigo?
19. 19.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
20. 20.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a solution (d) a magnet
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) time for colour to show (c) the room it stands in (d) the length of the stem
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a towel for spills (d) turmeric powder
25. 25.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) lightning (b) rain (c) wind (d) sunshine
26. 26.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) turmeric powder (c) a towel for spills (d) a mirror
27. 27.🧺 Do we need a balloon for the water cycle bowl? (a) needed (b) not needed
28. 28.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) spilled oil is slippery (c) oil attracts magnets (d) oil makes it rain
29. 29.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.💧 Why do water drops form on the outside of a glass of ice water? (a) vapour in air cools (b) the glass leaks (c) the glass sweats (d) ice escapes the glass
31. 31.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a balloon (c) water (d) cling film
34. 34.True or false: a stone falls fast through the air. (a) True (b) False
35. 35.True or false: a rubber eraser does not let water climb. (a) False (b) True
36. 36.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) a battery cell (c) a small cup (d) cling film
38. 38.🔍 Which is the odd one out? (a) an empty capped bottle (b) a steel spoon (c) a piece of thermocol (d) a ping-pong ball
39. 39.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
40. 40.True or false: sugar in icy water dissolves slower. (a) True (b) False

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