Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 467 · 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 ice cube is less dense than water. (a) True (b) False
2. 2.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
3. 3.🛟 Which of these floats on water? (a) a ping-pong ball (b) a coin (c) a metal key (d) an iron nail
4. 4.True or false: a magnet is not needed for the water cycle bowl. (a) True (b) False
5. 5.🧺 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 tub of water (d) yeast
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same glass (b) whether the card stays (c) how full the glass is
7. 7.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the same straw (c) the same string (d) the slope of the string
9. 9.True or false: a flower stem does not let water climb. (a) True (b) False
10. 10.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar stirred well (d) sugar left unstirred
11. 11.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) small pebbles (d) sand
14. 14.True or false: a piece of chalk does not let water climb. (a) False (b) True
15. 15.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) water (c) cling film (d) a mirror
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
17. 17.💧 Which of these is evaporation? (a) butter going runny (b) wet hair drying (c) a pond icing over (d) making ice lollies
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) food colour (d) a few hours of waiting
21. 21.True or false: a pond icing over is evaporation. (a) True (b) False
22. 22.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
23. 23.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass leaks (b) vapour in air cools (c) the glass sweats (d) ice escapes the glass
24. 24.True or false: very salty water is less dense than water. (a) True (b) False
25. 25.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
27. 27.True or false: a pebble floats on water. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a medicine dropper
29. 29.💧 Which of these is condensation? (a) snow turning to water (b) water becoming ice (c) drops under a pot lid (d) a puddle drying up
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a mirror (c) a towel for spills (d) turmeric powder
31. 31.True or false: a magnet is needed for the paper helicopter. (a) False (b) True
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a clock or timer (c) sugar (d) a comb
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is the one thing we change. (a) True (b) False
34. 34.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
35. 35.💧 Which change is this: a misty bathroom mirror? (a) evaporation (b) freezing (c) condensation (d) melting
36. 36.True or false: ice cubes is needed for the water cycle bowl. (a) False (b) True
37. 37.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
38. 38.True or false: water a swimmer pushes goes forward. (a) False (b) True
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.🥄 Which of these does not dissolve in water? (a) baking soda (b) small pebbles (c) sugar (d) food colour

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