Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 858 · 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 balloon is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.⚖️ 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) whether the card stays (b) how full the glass is (c) the way we turn it (d) the same card
3. 3.🔍 Which is the odd one out? (a) a coin (b) a glass marble (c) an open sheet of paper (d) a stone
4. 4.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) cling film (c) a balloon (d) turmeric powder
5. 5.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it sinks (d) it still floats
6. 6.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) a glass marble (b) a feather (c) a stone (d) a steel spoon
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a magnet (c) small test objects (d) a towel for spills
9. 9.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the same glass
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a magnet (d) a tub of water
12. 12.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the stirring
14. 14.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a magnet (c) a mirror (d) turmeric powder
15. 15.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
16. 16.🛟 Which of these floats on water? (a) a piece of thermocol (b) an iron nail (c) a steel spoon (d) a metal key
17. 17.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a small cup (c) turmeric powder (d) a big bowl
18. 18.True or false: drops on a cold glass is melting. (a) False (b) True
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) False (b) True
20. 20.True or false: gas from the rocket goes forward. (a) True (b) False
21. 21.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a magnetic pin holder (d) a compass needle
22. 22.⚖️ 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) sun or shade (b) how many drops form (c) the size of the bowl (d) the cling film cover
23. 23.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the glass breaks (d) the card stays on
24. 24.🍯 Which of these is denser than water? (a) air (b) a coin (c) cooking oil (d) a cork
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) False (b) True
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) yeast
27. 27.🔍 Which is the odd one out? (a) an ice-cream stick (b) an ice cube (c) a ball of clay (d) a piece of thermocol
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) False (b) True
29. 29.True or false: a glass marble lets water climb up it. (a) True (b) False
30. 30.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
31. 31.💧 Which change is this: a puddle drying up? (a) condensation (b) melting (c) evaporation (d) freezing
32. 32.🎈 When does the balloon rocket stop? (a) when the air runs out (b) when it turns blue (c) when it gets cold (d) it never stops
33. 33.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
34. 34.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
35. 35.📘 What pulls the paper helicopter down to the floor? (a) gravity (b) air pressure (c) the wind (d) magnetism
36. 36.🥛 Which of these works by air pressure? (a) a compass needle (b) a suction hook (c) a magnetic pin holder (d) a fridge magnet
37. 37.True or false: a steel spoon does not let water climb. (a) False (b) True
38. 38.🧺 Which of these is not needed for the density tower? (a) a spoon (b) water with food colour (c) honey (d) turmeric powder
39. 39.True or false: a battery cell is not needed for the density tower. (a) False (b) True
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a towel for spills (c) small test objects (d) a results table

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