Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 936 · 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 paper helicopter falls slowly through the air. (a) False (b) True
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a white flower (d) a battery cell
3. 3.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
4. 4.💧 Which change is this: drops under a pot lid? (a) freezing (b) condensation (c) melting (d) evaporation
5. 5.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) how many drops form (b) sun or shade (c) the time we wait (d) the size of the bowl
7. 7.True or false: air from the balloon goes backward. (a) True (b) False
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a glass of water (d) a mirror
10. 10.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil turns into honey (c) spilled oil is slippery (d) oil makes it rain
11. 11.⚖️ 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) whether the card stays (b) how full the glass is (c) the same glass
12. 12.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
14. 14.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a fridge magnet (d) a magnetic chess set
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
17. 17.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is what we measure. (a) True (b) False
18. 18.True or false: warm water is not needed for the dissolving test. (a) True (b) False
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) True (b) False
20. 20.True or false: table salt does not dissolve in water. (a) True (b) False
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
22. 22.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) powdered sugar (d) the sugar cube
23. 23.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a glass marble (d) a strip of cloth
24. 24.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels less far (d) it travels farther
25. 25.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.🔍 What do you see after pouring honey, water and oil into one glass? (a) the glass gets hot (b) one mixed colour (c) bubbles of gas (d) three separate layers
28. 28.True or false: a piece of chalk lets water climb up it. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a pebble (b) an iron nail (c) a steel spoon (d) a dry leaf
30. 30.True or false: a glass marble is less dense than water. (a) True (b) False
31. 31.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) neither of them (c) the flat sheet (d) a sheet of glass
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) the tub of water (c) the amount of clay (d) the kind of clay
34. 34.🧺 Which of these is not needed for the float-or-sink test? (a) turmeric powder (b) a results table (c) a tub of water (d) small test objects
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) True (b) False
36. 36.True or false: a cotton thread does not let water climb. (a) False (b) True
37. 37.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
38. 38.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the length of the blades (b) time to reach the floor (c) the paper clip (d) the drop height
40. 40.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed

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