Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 862 · 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.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a magnet (c) a balloon (d) a battery cell
2. 2.🧺 Which of these is not needed for the density tower? (a) a mirror (b) a tall clear glass (c) cooking oil (d) a spoon
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a drinking straw (c) a long string (d) two chairs
4. 4.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a glass marble (c) a toy parachute (d) a steel spoon
6. 6.⚖️ 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 keep it the same (b) we measure it (c) we change it
7. 7.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it melts (d) it sinks
8. 8.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) magnets (d) balloons
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) the amount of water (c) sun or shade
10. 10.⚖️ 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 same window (c) brightness of rainbow
11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) small test objects (d) a balloon
12. 12.True or false: a mirror is needed for the dissolving test. (a) False (b) True
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is the one thing we change. (a) True (b) False
14. 14.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) some stays undissolved (d) the sugar turns to salt
15. 15.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.True or false: water becoming ice is freezing. (a) True (b) False
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
18. 18.📘 What pulls the paper helicopter down to the floor? (a) the wind (b) air pressure (c) magnetism (d) gravity
19. 19.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) keep it away from faces (c) put string round a neck (d) blow it till it bursts
20. 20.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the same glass (c) the order of pouring
21. 21.🧺 Do we need a magnet for the paper helicopter? (a) needed (b) not needed
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
23. 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) a tall clear glass (c) honey (d) water with food colour
24. 24.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a ruler (c) yeast (d) a strip of paper
25. 25.True or false: baking soda does not dissolve in water. (a) False (b) True
26. 26.🧺 Do we need yeast for the density tower? (a) not needed (b) needed
27. 27.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a toy parachute (c) a feather (d) a crumpled paper ball
28. 28.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
29. 29.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) tiny drops of water (d) many colours mixed
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) the same tape (c) the same string (d) distance it travels
31. 31.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sawdust (d) table salt
32. 32.💧 In the covered bowl, where does the water vapour come from? (a) the bowl itself (b) water warmed by the Sun (c) the air outside (d) the cling film
33. 33.True or false: glucose powder dissolves in water. (a) False (b) True
34. 34.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a results table (c) a towel for spills (d) small test objects
36. 36.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
37. 37.True or false: a pebble is denser than water. (a) False (b) True
38. 38.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a magnet (c) cling film (d) a mirror
39. 39.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
40. 40.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) water (c) a big bowl (d) a battery cell

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