Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 193 · 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.True or false: a tall clear glass is not needed for the density tower. (a) True (b) False
2. 2.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a roof edge (c) a wobbly chair (d) from your raised hand
3. 3.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
4. 4.🚀 Which of these goes backward? (a) the balloon (b) the rowing boat (c) the rocket (d) gas from the rocket
5. 5.🧺 Which of these is not needed for the paper helicopter? (a) a battery cell (b) a pencil (c) a paper clip (d) a ruler
6. 6.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
8. 8.🧺 Do we need a pencil for the paper helicopter? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a mirror (c) safety scissors (d) a paper clip
10. 10.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
11. 11.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same card (b) the same glass (c) the way we turn it (d) how full the glass is
13. 13.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) more friction, less far (c) it goes faster (d) no change at all
14. 14.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) water (c) turmeric powder (d) ice cubes
15. 15.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a towel for spills (c) yeast (d) a balloon
16. 16.🍯 Which of these is denser than water? (a) air (b) a cork (c) an ice cube (d) a coin
17. 17.🌈 In VIBGYOR, what number colour is yellow?
18. 18.🔍 Which is the odd one out? (a) chalk powder (b) glucose powder (c) baking soda (d) sugar
19. 19.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) yeast (c) a mirror (d) vinegar
20. 20.🧺 Which of these is needed for the density tower? (a) a balloon (b) a mirror (c) honey (d) yeast
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
22. 22.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to win a prize (d) to splash everyone
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of water (b) time to dissolve (c) the stirring (d) the water temperature
24. 24.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
25. 25.True or false: a puddle drying up is evaporation. (a) False (b) True
26. 26.⚖️ 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) sun or shade (b) how many drops form (c) the amount of water (d) the time we wait
27. 27.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it flies upward (c) it turns into a ball (d) it spins round
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) yeast (d) a towel
29. 29.True or false: baking soda does not dissolve in water. (a) True (b) False
30. 30.True or false: a sugar cube lets water climb up it. (a) False (b) True
31. 31.True or false: a battery cell is not needed for the water cycle bowl. (a) True (b) False
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the slope of the string (c) the same straw (d) how big we blow it
33. 33.⚖️ 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 measure it (b) we change it (c) we keep it the same
34. 34.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
35. 35.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) a small cup (c) a balloon (d) a battery cell
36. 36.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) water (c) yeast (d) a small cup
37. 37.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) air pushes it up (d) juice likes plastic
38. 38.🍯 Which of these is denser than water? (a) a cork (b) a ping-pong ball (c) an ice cube (d) a glass marble
39. 39.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) tiny bits of dust (d) many colours mixed
40. 40.🛟 Which of these floats on water? (a) a ball of clay (b) an iron nail (c) a pebble (d) a cork

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