Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 403 · 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 paper towel lets water climb up it. (a) True (b) False
2. 2.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same three liquids (b) the order of the layers (c) how much of each liquid (d) the order of pouring
3. 3.True or false: honey is not needed for the density tower. (a) False (b) True
4. 4.True or false: honey is needed for the density tower. (a) False (b) True
5. 5.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a ruler (c) safety scissors (d) a mirror
7. 7.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) slide on them (c) wipe them dry (d) pour more water
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) False (b) True
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) False (b) True
10. 10.⚖️ 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 measure it (c) we change it
11. 11.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
12. 12.🧺 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 mirror (d) a tub of water
13. 13.True or false: sugar left unstirred dissolves faster. (a) False (b) True
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the slope of the string (c) how big we blow it (d) the same straw
15. 15.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
16. 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a balloon (d) small test objects
17. 17.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the card flies away (d) the water turns to ice
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
19. 19.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) water with food colour (c) honey (d) a mirror
20. 20.⚖️ 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) True (b) False
21. 21.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) backward (c) straight down (d) forward
22. 22.True or false: food colour dissolves in water. (a) False (b) True
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic
24. 24.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it floats up (c) it turns blue (d) it settles at the bottom
25. 25.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) turmeric powder (c) small test objects (d) a tub of water
27. 27.🛟 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
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
30. 30.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) escaping air pushes it (d) the string pulls it
31. 31.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they become solid (c) they mix for ever (d) they turn to honey
32. 32.⚖️ 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) False (b) True
33. 33.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
34. 34.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) a pencil (c) turmeric powder (d) yeast
35. 35.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it sinks (d) it turns blue
36. 36.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) a ruler (d) a battery cell
37. 37.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is the one thing we change. (a) True (b) False
38. 38.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a drinking straw (c) a mirror (d) a balloon
39. 39.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
40. 40.📘 What does “dense” mean? (a) very colourful (b) heavy for its size (c) very thin (d) very hot

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