Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 965 · 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.🧺 Do we need a battery cell for the water cycle bowl? (a) needed (b) not needed
2. 2.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so it turns blue (d) so the Sun moves
3. 3.True or false: a fridge magnet works by air pressure. (a) True (b) False
4. 4.🧺 Which of these is needed for the dissolving test? (a) two clear glasses (b) cotton wool (c) a comb (d) a magnet
5. 5.⚖️ 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
6. 6.True or false: sunlight is not needed for the water cycle bowl. (a) True (b) False
7. 7.True or false: water with food colour is needed for the density tower. (a) False (b) True
8. 8.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
9. 9.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the amount of water (b) the same glass (c) the same window (d) the time of day
11. 11.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) sugar (d) sand
12. 12.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
15. 15.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to hide the corks (d) to win a prize
16. 16.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
17. 17.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
18. 18.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) it goes faster (c) less friction (d) more friction, less far
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is kept the same. (a) False (b) True
20. 20.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is the one thing we change. (a) True (b) False
21. 21.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the room it stands in (b) the length of the stem (c) time for colour to show
23. 23.🛟 Which of these floats on water? (a) an iron nail (b) a piece of thermocol (c) a metal key (d) a pebble
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a towel (d) a sink or a bucket
25. 25.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
26. 26.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a battery cell (c) two chairs (d) sticky tape
27. 27.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) a paper cutter (c) gardening shears (d) sharp kitchen shears
28. 28.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.True or false: chalk powder dissolves in water. (a) True (b) False
30. 30.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
31. 31.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) capillary action (d) evaporation
32. 32.True or false: a magnetic chess set works by magnetism. (a) False (b) True
33. 33.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
34. 34.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) turmeric powder (c) a magnet (d) water
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🔍 Which is the odd one out? (a) a coin (b) honey (c) a cork (d) a glass marble
37. 37.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
38. 38.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
39. 39.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.True or false: a vacuum cleaner works by air pressure. (a) False (b) True

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