Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 743 · 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.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) True (b) False
2. 2.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) pour more water (c) wipe them dry (d) leave them wet
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) how big we blow it (c) the same straw (d) the same tape
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) bright sunlight (d) a sunny window
5. 5.True or false: a flower stem does not let water climb. (a) False (b) True
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of colour (b) the kind of flower (c) the room it stands in (d) the length of the stem
7. 7.True or false: a mirror is needed for the water cycle bowl. (a) True (b) False
8. 8.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
9. 9.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
10. 10.🧺 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) a tub of water (d) small test objects
11. 11.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.True or false: a pebble is less dense than water. (a) False (b) True
13. 13.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.True or false: turmeric powder is not needed for the density tower. (a) False (b) True
15. 15.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) magnetism (d) melting
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
17. 17.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) cling film (c) sunlight (d) water
18. 18.⚖️ 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
19. 19.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a drinking straw (c) a fridge magnet (d) a compass needle
20. 20.🥄 Which of these dissolves slower? (a) sugar in icy water (b) powdered sugar (c) sugar stirred well (d) sugar in warm water
21. 21.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
22. 22.🍯 Which of these is less dense than water? (a) a glass marble (b) a coin (c) honey (d) a cork
23. 23.True or false: glucose powder does not dissolve in water. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) an empty capped bottle (b) a ball of clay (c) a pebble (d) a coin
25. 25.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) balloons (d) prisms
26. 26.🌈 How many colours do we name in a rainbow (VIBGYOR)?
27. 27.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
28. 28.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) the flat sheet (c) neither of them (d) a sheet of glass
29. 29.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
30. 30.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
31. 31.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) a magnet
33. 33.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a mirror
35. 35.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
36. 36.⚖️ 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 cling film cover (b) sun or shade (c) the amount of water (d) how many drops form
37. 37.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.⚖️ 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 person dropping
39. 39.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) taste each layer (c) throw the glass (d) do not lick the spoon
40. 40.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) reflection (d) refraction

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