Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 295 · 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 balloon is not needed for the density tower. (a) False (b) True
2. 2.📘 What does “dense” mean? (a) very thin (b) heavy for its size (c) very colourful (d) very hot
3. 3.⚖️ 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 water
4. 4.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
5. 5.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) aim it at your friend (d) blow it till it bursts
6. 6.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
7. 7.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
8. 8.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it turns into a kite (c) it gets too heavy (d) it changes colour
9. 9.⚖️ 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 keep it the same (b) we change it (c) we measure it
10. 10.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) cold water (c) a mirror (d) two clear glasses
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) a battery cell
12. 12.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
13. 13.⚖️ 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
14. 14.True or false: a battery cell is needed for the density tower. (a) False (b) True
15. 15.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a magnet (c) sticky tape (d) a balloon
16. 16.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.True or false: ice cubes is needed for the water cycle bowl. (a) False (b) True
18. 18.True or false: glucose powder does not dissolve in water. (a) True (b) False
19. 19.🍯 Which of these is less dense than water? (a) honey (b) very salty water (c) an ice cube (d) a coin
20. 20.🚀 Which of these goes forward? (a) water from the oars (b) water a swimmer pushes (c) the rocket (d) air from the balloon
21. 21.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
22. 22.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
23. 23.True or false: a cork is denser than water. (a) True (b) False
24. 24.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) a big bowl (c) a small cup (d) ice cubes
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) yeast (b) water with food colour (c) a spoon (d) a tall clear glass
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is what we measure. (a) True (b) False
27. 27.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a battery cell (c) a glass of water (d) a stiff postcard
29. 29.🥄 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) sawdust (d) sugar
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) yeast (c) a glass of water (d) a stiff postcard
31. 31.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a battery cell (b) water with food colour (c) honey (d) a tall clear glass
32. 32.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.True or false: very salty water is less dense than water. (a) True (b) False
34. 34.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
35. 35.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card flies away (c) the glass breaks (d) the card stays on
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) yeast (d) a white flower
37. 37.True or false: a coin is denser than water. (a) True (b) False
38. 38.True or false: small pebbles does not dissolve in water. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a stone (b) a glass marble (c) a steel spoon (d) a fluff of cotton
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a battery cell (d) small test objects

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