Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 270 · 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 water rainbow? (a) bright sunlight (b) a mirror (c) a battery cell (d) a magnet
2. 2.🌈 In VIBGYOR, what number colour is orange?
3. 3.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
4. 4.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) faster (c) the same (d) slower
5. 5.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they separate again (c) they turn to honey (d) they mix for ever
6. 6.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to hide the corks (d) to splash everyone
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) the kind of clay (c) the amount of clay (d) whether it floats
8. 8.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is the one thing we change. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a toy parachute (b) a paper helicopter (c) a feather (d) a steel spoon
10. 10.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a drinking straw
11. 11.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🔍 Which is the odd one out? (a) a coin (b) a glass marble (c) a feather (d) a steel spoon
13. 13.True or false: a pebble is denser than water. (a) True (b) False
14. 14.⚖️ 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 measure it (b) we change it (c) we keep it the same
15. 15.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
16. 16.True or false: sugar in icy water dissolves slower. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) table salt (d) sawdust
18. 18.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) a battery cell (c) yeast (d) a ruler
19. 19.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
20. 20.🍯 Which of these is denser than water? (a) an ice cube (b) a pebble (c) cooking oil (d) air
21. 21.True or false: a feather sinks in water. (a) True (b) False
22. 22.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) a strip of paper (d) a mirror
23. 23.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) water (c) turmeric powder (d) cling film
24. 24.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) red (d) yellow
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a towel (c) turmeric powder (d) a stiff postcard
26. 26.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a rubber eraser (d) a cotton thread
27. 27.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) sunlight (c) a big bowl (d) a small cup
28. 28.True or false: a tall clear glass is not needed for the density tower. (a) True (b) False
29. 29.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) turmeric powder (d) a tub of water
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) yeast (c) a glass of water (d) a stiff postcard
32. 32.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic pin holder (d) a drinking straw
33. 33.True or false: sunlight is needed for the water cycle bowl. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) making ice lollies (b) a pond icing over (c) water becoming ice (d) a misty bathroom mirror
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) cold water (c) a teaspoon (d) warm water
36. 36.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) neither of them (c) both the same (d) the sugar cube
37. 37.🧺 Which of these is needed for the paper helicopter? (a) safety scissors (b) a battery cell (c) yeast (d) turmeric powder
38. 38.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
39. 39.🌈 How many colours do we name in a rainbow (VIBGYOR)?
40. 40.🧺 Do we need yeast for the density tower? (a) not needed (b) needed

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