Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 284 · 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 sinks in water? (a) a cork (b) a ping-pong ball (c) an ice cube (d) a pebble
2. 2.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels less far (c) it speeds up (d) it travels farther
3. 3.🧺 Do we need cling film for the water cycle bowl? (a) not needed (b) needed
4. 4.🍯 Which of these is less dense than water? (a) an ice cube (b) a glass marble (c) honey (d) a coin
5. 5.True or false: sand dissolves in water. (a) True (b) False
6. 6.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) safety scissors (d) gardening shears
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
8. 8.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) magnetism (d) sunlight
9. 9.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a magnetic pin holder (c) a vacuum cleaner (d) a suction hook
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same three liquids (b) the order of pouring (c) how much of each liquid (d) the order of the layers
11. 11.True or false: sugar stirred well dissolves faster. (a) True (b) False
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) turmeric powder (c) a sheet of white paper (d) bright sunlight
13. 13.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a sugar cube (d) a piece of foil
14. 14.True or false: cooking oil does not dissolve in water. (a) True (b) False
15. 15.🔮 Predict: you add two more paper clips. How does it fall? (a) faster (b) slower (c) it floats up (d) it stops in the air
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) True (b) False
17. 17.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) a magnet
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) False (b) True
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a mirror (c) a results table (d) small test objects
21. 21.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
22. 22.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a mirror (b) a strip of paper (c) a ruler (d) safety scissors
24. 24.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) yeast (c) a clear glass of water (d) bright sunlight
26. 26.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
27. 27.True or false: a cork sinks in water. (a) True (b) False
28. 28.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
29. 29.🛟 Which of these floats on water? (a) a dry leaf (b) a metal key (c) an iron nail (d) a coin
30. 30.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
31. 31.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
32. 32.🚁 Which of these falls fast through the air? (a) a toy parachute (b) a glass marble (c) a feather (d) an open sheet of paper
33. 33.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) cooking oil (d) table salt
34. 34.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.⚖️ 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
37. 37.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
38. 38.True or false: a pebble sinks in water. (a) False (b) True
39. 39.⚖️ 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) True (b) False
40. 40.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed

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