Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 154 · 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.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) the sugar cube (d) powdered sugar
2. 2.🧺 Which of these is not needed for the balloon rocket? (a) a battery cell (b) a drinking straw (c) a long string (d) two chairs
3. 3.True or false: water with food colour is not needed for the density tower. (a) True (b) False
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the kind of clay (c) the amount of clay (d) whether it floats
5. 5.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) it turns brighter (d) the rainbow fades
8. 8.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water is magnetic (c) hot water can scald (d) it changes colour
9. 9.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet
10. 10.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the cling film cover (b) sun or shade (c) the amount of water (d) how many drops form
11. 11.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.True or false: cling film is needed for the water cycle bowl. (a) False (b) True
13. 13.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a mirror (b) a ruler (c) a paper clip (d) a pencil
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a towel (d) a mirror
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the length of the blades (b) the kind of paper (c) time to reach the floor (d) the person dropping
17. 17.🧺 Which of these is needed for the density tower? (a) yeast (b) turmeric powder (c) a tall clear glass (d) a balloon
18. 18.⚖️ 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
19. 19.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) evaporation (d) melting
20. 20.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) chalk powder (d) sugar
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) a sink or a bucket (d) yeast
22. 22.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
23. 23.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the water turns green (d) the petals turn bluish
24. 24.🧺 Do we need turmeric powder for the density tower? (a) needed (b) not needed
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it dissolves (c) it still floats (d) it turns white
27. 27.True or false: the swimmer goes backward. (a) False (b) True
28. 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) cold water (d) a balloon
29. 29.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
30. 30.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
31. 31.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) little air left inside (d) it looks nicer
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a white flower (c) a glass of water (d) food colour
33. 33.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) a battery cell (c) sunlight (d) a magnet
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is the one thing we change. (a) False (b) True
35. 35.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a fridge magnet (d) a compass needle
36. 36.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a medicine dropper (d) a magnetic pin holder
37. 37.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a pencil (c) a strip of paper (d) a magnet
38. 38.🔍 Which is the odd one out? (a) an ice-cream stick (b) an iron nail (c) a pebble (d) a ball of clay
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.True or false: a magnet is needed for the balloon rocket. (a) False (b) True

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