Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 297 · 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 amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) the time of day (c) brightness of rainbow
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
3. 3.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
5. 5.🥄 Which of these does not dissolve in water? (a) baking soda (b) sawdust (c) glucose powder (d) table salt
6. 6.🛟 Which of these floats on water? (a) an ice cube (b) an iron nail (c) a glass marble (d) a steel spoon
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a mirror (c) a teaspoon (d) warm water
8. 8.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.🚁 Why does the paper helicopter fall slowly? (a) the floor pushes it (b) a magnet holds it (c) it has no weight (d) air pushes on its blades
10. 10.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.🧺 Which of these is not needed for the paper helicopter? (a) a battery cell (b) a ruler (c) a strip of paper (d) safety scissors
13. 13.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) False (b) True
14. 14.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a balloon (c) cooking oil (d) a mirror
15. 15.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
16. 16.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) from your raised hand (c) a roof edge (d) a high window ledge
17. 17.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they separate again (c) they turn to honey (d) they mix for ever
18. 18.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls fast (b) falls slowly
19. 19.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) a battery cell (c) cling film (d) sunlight
20. 20.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
21. 21.⚖️ 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 three liquids (c) the order of pouring (d) the same glass
22. 22.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) ice cubes (c) cling film (d) yeast
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) small test objects (c) a tub of water (d) a results table
24. 24.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a battery cell (c) a drinking straw (d) vinegar
25. 25.True or false: a dry leaf floats on water. (a) False (b) True
26. 26.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
27. 27.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) it turns to salt (c) it turns to ice (d) some water evaporates
28. 28.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) the water is coloured (d) water splits the light
29. 29.True or false: yeast is needed for the paper helicopter. (a) False (b) True
30. 30.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) two chairs (c) vinegar (d) a long string
31. 31.💧 Which of these lets water climb up it? (a) a steel spoon (b) a strip of cloth (c) a plastic ruler (d) a piece of foil
32. 32.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
33. 33.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card flies away (c) the card stays on (d) the glass breaks
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) food colour (d) a mirror
35. 35.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.🍯 Which of these is less dense than water? (a) a coin (b) honey (c) a pebble (d) an ice cube
37. 37.🧺 Which of these is needed for the density tower? (a) a mirror (b) a spoon (c) yeast (d) turmeric powder
38. 38.True or false: a glass marble falls slowly through the air. (a) False (b) True
39. 39.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
40. 40.🔍 Which layer is on top in the honey-water-oil tower? (a) the spoon (b) honey (c) coloured water (d) cooking oil

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