Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 507 · 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 shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the kind of clay (b) the amount of clay (c) the tub of water (d) the shape of the clay
2. 2.True or false: a sugar cube lets water climb up it. (a) False (b) True
3. 3.⚖️ 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
4. 4.🧺 Do we need water with food colour for the density tower? (a) needed (b) not needed
5. 5.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.True or false: cooking oil is less dense than water. (a) True (b) False
7. 7.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it dissolves (c) it turns to stone (d) it sinks faster
8. 8.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) slower (c) it stops in the air (d) faster
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a magnet (c) a clear glass of water (d) a sheet of white paper
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
12. 12.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
13. 13.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) only yellow light (d) many colours mixed
14. 14.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) bubbles of gas (c) the glass gets hot (d) three separate layers
15. 15.🧺 Do we need a battery cell for the paper helicopter? (a) not needed (b) needed
16. 16.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a sheet of white paper (d) a battery cell
17. 17.True or false: yeast is needed for the water cycle bowl. (a) True (b) False
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is kept the same. (a) False (b) True
19. 19.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a mirror (d) a sunny window
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is what we measure. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) honey (b) very salty water (c) a glass marble (d) cooking oil
22. 22.🥄 Which of these dissolves in water? (a) sand (b) baking soda (c) sawdust (d) small pebbles
23. 23.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) a magnet (d) a results table
25. 25.True or false: a magnet is needed for the dissolving test. (a) False (b) True
26. 26.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a ruler (c) a pencil (d) a mirror
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.True or false: a comb is not needed for the dissolving test. (a) True (b) False
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) the slope of the string (c) distance it travels
30. 30.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) a magnet pulls it (c) escaping air pushes it (d) the straw is heavy
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a balloon (d) a glass of water
32. 32.True or false: the swimmer goes forward. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a piece of thermocol (b) an ice cube (c) a steel spoon (d) a ping-pong ball
34. 34.🔍 Which is the odd one out? (a) butter going runny (b) ice becoming water (c) snow turning to water (d) drops on a cold glass
35. 35.🚁 Which of these falls slowly through the air? (a) a coin (b) a stone (c) a crumpled paper ball (d) a paper helicopter
36. 36.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) water (c) a big bowl (d) a battery cell
37. 37.🧺 Do we need a pencil for the paper helicopter? (a) needed (b) not needed
38. 38.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the water turns red (b) fewer drops form (c) more drops form (d) the bowl freezes
39. 39.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they separate again (c) they mix for ever (d) they become solid
40. 40.🔍 Which is the odd one out? (a) very salty water (b) air (c) honey (d) a glass marble

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