Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 914 · 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 the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.True or false: air from the balloon goes backward. (a) True (b) False
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) a battery cell (c) cling film (d) water
6. 6.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
7. 7.🌈 In VIBGYOR, what number colour is yellow?
8. 8.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
10. 10.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a sundial (c) a mirror (d) a balloon rocket
11. 11.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
12. 12.🔍 Which is the odd one out? (a) food colour (b) small pebbles (c) table salt (d) sugar
13. 13.True or false: cooking oil is less dense than water. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a vacuum cleaner (d) a magnetic chess set
15. 15.📘 What pulls the paper helicopter down to the floor? (a) air pressure (b) gravity (c) the wind (d) magnetism
16. 16.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a magnet (c) a spoon (d) water with food colour
17. 17.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) it stays still (c) forward (d) backward
18. 18.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
19. 19.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a cork (c) an ice cube (d) a steel spoon
20. 20.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to make it rain (d) to cool the glass
21. 21.True or false: yeast is not needed for the water cycle bowl. (a) True (b) False
22. 22.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a strip of paper (c) a mirror (d) a pencil
23. 23.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) cooking oil (c) the spoon (d) coloured water
24. 24.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it travels farther (c) it speeds up (d) it goes backward first
25. 25.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) a tub of water (c) a towel for spills (d) a results table
27. 27.True or false: turmeric powder is needed for the density tower. (a) True (b) False
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.True or false: turmeric powder is not needed for the density tower. (a) True (b) False
30. 30.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
31. 31.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) powdered sugar
32. 32.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter
33. 33.⚖️ 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 amount of water (b) sun or shade (c) the time we wait (d) how many drops form
34. 34.🔍 Which is the odd one out? (a) a paper towel (b) a rubber eraser (c) a piece of chalk (d) a flower stem
35. 35.True or false: a cork sinks in water. (a) True (b) False
36. 36.True or false: a compass needle works by magnetism. (a) True (b) False
37. 37.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
38. 38.🍯 Is a glass marble denser or less dense than water? (a) less dense than water (b) denser than water
39. 39.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we keep it the same (b) we change it (c) we measure it

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