Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 718 · 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 — 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
2. 2.🍯 Which of these is denser than water? (a) a cork (b) cooking oil (c) very salty water (d) a ping-pong ball
3. 3.💧 Which of these is melting? (a) wet clothes drying (b) a puddle drying up (c) making ice lollies (d) ice becoming water
4. 4.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) how many drops form (b) the amount of water (c) the time we wait (d) sun or shade
5. 5.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they turn to honey (c) they separate again (d) they become solid
6. 6.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
7. 7.True or false: an iron nail sinks in water. (a) False (b) True
8. 8.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water is magnetic (c) hot water can scald (d) it changes colour
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a white flower (d) a glass of water
10. 10.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
11. 11.🚁 Which of these falls slowly through the air? (a) a glass marble (b) an open sheet of paper (c) a steel spoon (d) a stone
12. 12.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it turns blue (c) it spins the other way (d) it does not fall
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) cling film (c) a balloon (d) a big bowl
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) False (b) True
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🍯 Which of these is denser than water? (a) cooking oil (b) an ice cube (c) honey (d) a ping-pong ball
18. 18.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
19. 19.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
20. 20.🛟 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
21. 21.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a suction hook (d) a compass needle
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
24. 24.🌈 In VIBGYOR, what number colour is orange?
25. 25.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) wet hair drying (b) making ice lollies (c) a puddle drying up (d) sweat drying on skin
27. 27.True or false: wet clothes drying is melting. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a fluff of cotton (b) a crumpled paper ball (c) a glass marble (d) a steel spoon
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a battery cell (c) bright sunlight (d) a sheet of white paper
30. 30.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
31. 31.🍯 Is a pebble denser or less dense than water? (a) denser than water (b) less dense than water
32. 32.🥄 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) table salt (d) cooking oil
33. 33.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) small test objects (c) a mirror (d) turmeric powder
34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is what we measure. (a) True (b) False
35. 35.🛟 Which of these floats on water? (a) a steel spoon (b) a ball of clay (c) an iron nail (d) an empty capped bottle
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) blue (c) violet (d) green
38. 38.🚀 Which of these goes backward? (a) the rowing boat (b) water from the oars (c) the swimmer (d) the rocket
39. 39.True or false: yeast is needed for the water rainbow. (a) False (b) True
40. 40.🍯 Is very salty water denser or less dense than water? (a) less dense than water (b) denser than water

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