Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 722 · 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? Which of these is the one thing we change? (a) the way we turn it (b) the same glass (c) the same card (d) how full the glass is
2. 2.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) two chairs (c) a balloon (d) a magnet
3. 3.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) cling film (c) ice cubes (d) turmeric powder
4. 4.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
5. 5.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) turmeric powder (d) a tub of water
6. 6.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) a balloon (c) a small cup (d) ice cubes
8. 8.True or false: sunlight is not needed for the water cycle bowl. (a) False (b) True
9. 9.🛟 Which of these floats on water? (a) a steel spoon (b) a glass marble (c) a coin (d) a cork
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a stiff postcard (d) a towel
11. 11.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the kind of clay (b) whether it floats (c) the shape of the clay
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🧺 Which of these is needed for the paper helicopter? (a) turmeric powder (b) a mirror (c) a magnet (d) a paper clip
15. 15.True or false: a medicine dropper works by magnetism. (a) False (b) True
16. 16.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same three liquids (b) how much of each liquid (c) the order of pouring (d) the order of the layers
17. 17.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) the flat sheet (c) neither of them (d) a sheet of glass
18. 18.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it turns blue (d) so it gets hot
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same white paper
20. 20.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to hide the corks (d) to keep children safe
21. 21.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the kind of clay (c) the amount of clay (d) whether it floats
23. 23.True or false: an empty capped bottle sinks in water. (a) False (b) True
24. 24.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) it turns to ice (c) some water evaporates (d) it turns to salt
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
27. 27.🔍 Which is the odd one out? (a) drops under a pot lid (b) butter going runny (c) a misty bathroom mirror (d) dew on morning grass
28. 28.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) small test objects (d) yeast
30. 30.🧺 Do we need a small cup for the water cycle bowl? (a) needed (b) not needed
31. 31.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is heavy (c) hot water is magnetic (d) hot water can scald
32. 32.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.⚖️ 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
35. 35.True or false: honey is not needed for the density tower. (a) True (b) False
36. 36.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls slowly (b) falls fast
37. 37.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls slowly (b) falls fast
38. 38.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of colour (b) the length of the stem (c) the kind of flower (d) time for colour to show
40. 40.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) safety scissors (c) a strip of paper (d) yeast

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids