Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 865 · 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 a bigger balloon go farther along the string? Which of these is kept the same? (a) the same straw (b) distance it travels (c) how big we blow it
2. 2.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
3. 3.🔍 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
4. 4.True or false: sugar left unstirred dissolves faster. (a) True (b) False
5. 5.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) red (d) violet
6. 6.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) the string pulls it (d) escaping air pushes it
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) bright sunlight (c) a sunny window (d) a sheet of white paper
8. 8.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
9. 9.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) taste each layer (c) throw the glass (d) pour it on the floor
10. 10.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
11. 11.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) wipe up spills at once (d) run around the tub
12. 12.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) taste it (c) poke it with a finger (d) look for leftover grains
13. 13.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) sugar stirred well
14. 14.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) pour more water (c) leave them wet (d) wipe them dry
15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a paper towel (d) a plastic ruler
17. 17.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
18. 18.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a fridge magnet (d) a drinking straw
19. 19.🍯 Which of these is less dense than water? (a) honey (b) a pebble (c) a glass marble (d) a ping-pong ball
20. 20.True or false: wet hair drying is freezing. (a) True (b) False
21. 21.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.🧺 Which of these is needed for the dissolving test? (a) honey (b) two clear glasses (c) a balloon (d) a comb
24. 24.🧺 Do we need a paper clip for the paper helicopter? (a) needed (b) not needed
25. 25.True or false: a ruler is needed for the paper helicopter. (a) False (b) True
26. 26.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
27. 27.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is what we measure. (a) True (b) False
28. 28.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
29. 29.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.📘 What is the push of air on a falling thing called? (a) dissolving (b) air resistance (c) floating (d) magnetism
32. 32.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) a mirror
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) time to dissolve (c) the water temperature (d) the stirring
35. 35.🧺 Which of these is not needed for the water cycle bowl? (a) yeast (b) a small cup (c) water (d) cling film
36. 36.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
37. 37.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) cling film (c) sunlight (d) turmeric powder
39. 39.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
40. 40.True or false: cooking oil is needed for the density tower. (a) True (b) False

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