Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 185 · 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: an iron nail sinks in water. (a) True (b) False
2. 2.True or false: a dry leaf floats on water. (a) True (b) False
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) the same tape (c) distance it travels (d) the slope of the string
4. 4.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) time to reach the floor (c) the kind of paper
5. 5.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) safety scissors (c) a pencil (d) turmeric powder
8. 8.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) it turns to ice (c) the water increases (d) it turns to salt
9. 9.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
10. 10.🧺 Do we need a balloon for the water cycle bowl? (a) not needed (b) needed
11. 11.🧺 Which of these is needed for the dissolving test? (a) honey (b) a balloon (c) a magnet (d) cold water
12. 12.True or false: an open sheet of paper falls slowly through the air. (a) True (b) False
13. 13.💧 Which change is this: a puddle drying up? (a) freezing (b) evaporation (c) melting (d) condensation
14. 14.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
15. 15.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) run around the tub (d) play near a deep pond
16. 16.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) a drinking straw (d) a long string
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the stirring (b) the water temperature (c) the amount of sugar (d) time to dissolve
19. 19.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) the size of the bowl (b) sun or shade (c) how many drops form
20. 20.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) sugar left unstirred (d) powdered sugar
21. 21.🔍 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 glass breaks (c) the card stays on (d) the card flies away
22. 22.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) water (c) yeast (d) cling film
24. 24.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic chess set (c) a bicycle pump (d) a medicine dropper
25. 25.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
26. 26.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) honey (b) cooking oil (c) very salty water (d) a coin
28. 28.🔍 Which is the odd one out? (a) very salty water (b) honey (c) air (d) a glass marble
29. 29.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) powdered sugar (d) sugar in icy water
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) True (b) False
31. 31.🍯 Which of these is denser than water? (a) honey (b) cooking oil (c) an ice cube (d) a cork
32. 32.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a plastic ruler (d) a piece of chalk
33. 33.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) neither of them (c) the flat sheet (d) the crumpled ball
34. 34.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
35. 35.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
36. 36.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it floats away (d) it turns all red
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a towel (d) turmeric powder
38. 38.True or false: a mirror is needed for the water cycle bowl. (a) False (b) True
39. 39.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
40. 40.🍯 Which of these is less dense than water? (a) honey (b) very salty water (c) a glass marble (d) a cork

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