Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 796 · 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.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) wipe them dry (c) leave them wet (d) pour more water
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a balloon (d) food colour
6. 6.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
7. 7.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) sun or shade (b) how many drops form (c) the amount of water
8. 8.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) honey (b) a pebble (c) very salty water (d) a cork
10. 10.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is what we measure. (a) True (b) False
12. 12.True or false: air from the balloon goes backward. (a) True (b) False
13. 13.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
14. 14.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
15. 15.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) two clear glasses (c) sugar (d) a clock or timer
17. 17.True or false: a crumpled paper ball falls slowly through the air. (a) True (b) False
18. 18.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
19. 19.True or false: a clock or timer is needed for the dissolving test. (a) True (b) False
20. 20.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is kept the same. (a) False (b) True
21. 21.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
22. 22.⚖️ 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
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
24. 24.🍯 Which of these is denser than water? (a) honey (b) a ping-pong ball (c) an ice cube (d) cooking oil
25. 25.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) how much of each liquid (b) the same glass (c) the order of pouring (d) the same three liquids
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
27. 27.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
28. 28.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a plastic ruler (d) a flower stem
29. 29.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
30. 30.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
31. 31.🌈 How many colours do we name in a rainbow (VIBGYOR)?
32. 32.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🛟 Which of these sinks in water? (a) a dry leaf (b) a glass marble (c) a ping-pong ball (d) a cork
34. 34.True or false: a coin falls slowly through the air. (a) False (b) True
35. 35.📘 What pulls the paper helicopter down to the floor? (a) magnetism (b) air pressure (c) the wind (d) gravity
36. 36.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a ping-pong ball (c) a pebble (d) a cork
37. 37.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
38. 38.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.📘 What is the push of air on a falling thing called? (a) magnetism (b) floating (c) dissolving (d) air resistance
40. 40.True or false: an ice cube floats on water. (a) False (b) True

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