Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 667 · 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.🧺 Which of these is needed for the density tower? (a) a tall clear glass (b) a magnet (c) yeast (d) turmeric powder
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same window (b) brightness of rainbow (c) the time of day (d) the same white paper
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
5. 5.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
6. 6.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) the amount of water (c) time to dissolve (d) the stirring
8. 8.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a drinking straw (c) a magnet (d) two chairs
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) False (b) True
10. 10.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of colour (c) the length of the stem
12. 12.🔍 Which is the odd one out? (a) wet hair drying (b) a misty bathroom mirror (c) wet clothes drying (d) a puddle drying up
13. 13.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
14. 14.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
15. 15.True or false: a battery cell is not needed for the paper helicopter. (a) False (b) True
16. 16.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a paper towel (d) a piece of foil
17. 17.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
18. 18.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a bicycle pump (d) a fridge magnet
19. 19.⚖️ 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
20. 20.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) a sheet of glass (c) the flat sheet (d) neither of them
21. 21.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) run around the tub (d) wipe up spills at once
22. 22.True or false: a dry leaf sinks in water. (a) False (b) True
23. 23.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) a mirror (c) sunlight (d) a big bowl
24. 24.🔍 Which is the odd one out? (a) a misty bathroom mirror (b) dew on morning grass (c) snow turning to water (d) drops under a pot lid
25. 25.🧺 Do we need yeast for the water cycle bowl? (a) not needed (b) needed
26. 26.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) under the honey (d) on top of the oil
28. 28.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
29. 29.🚁 Why does the paper helicopter fall slowly? (a) it has no weight (b) a magnet holds it (c) air pushes on its blades (d) the floor pushes it
30. 30.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a mirror (c) a comb (d) two clear glasses
31. 31.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it turns into a kite (d) it changes colour
33. 33.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) faster (c) it floats up (d) slower
34. 34.💧 Which of these is condensation? (a) a pond icing over (b) water becoming ice (c) butter going runny (d) drops on a cold glass
35. 35.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water is magnetic (d) hot water can scald
36. 36.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
37. 37.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) sticky tape (d) a mirror
38. 38.🛟 Which of these floats on water? (a) a coin (b) a pebble (c) an empty capped bottle (d) a metal key
39. 39.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.⚖️ 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) the amount of water (b) sun or shade (c) the size of the bowl (d) the time we wait

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