Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 795 · 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 ruler is needed for the paper helicopter. (a) False (b) True
2. 2.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) it turns all red (d) the rainbow fades
3. 3.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) cooking oil (c) a spoon (d) a mirror
4. 4.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
5. 5.True or false: sand dissolves in water. (a) True (b) False
6. 6.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) a big bowl (c) cling film (d) a magnet
7. 7.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls slowly (b) falls fast
8. 8.🔍 Which is the odd one out? (a) cooking oil (b) air (c) honey (d) an ice cube
9. 9.True or false: sticky tape is not needed for the balloon rocket. (a) False (b) True
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
12. 12.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
13. 13.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
14. 14.🛟 Which of these sinks in water? (a) a dry leaf (b) a piece of thermocol (c) a pebble (d) a feather
15. 15.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to win a prize (d) to splash everyone
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) two chairs (c) a magnet (d) a drinking straw
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a few hours of waiting (c) a glass of water (d) a white flower
18. 18.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the card flies away (d) the water turns to ice
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the kind of clay (c) whether it floats
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) a mirror
22. 22.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
23. 23.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) sawdust (d) chalk powder
27. 27.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
28. 28.True or false: a compass needle works by magnetism. (a) True (b) False
29. 29.⚖️ 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) True (b) False
30. 30.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a small cup (c) a battery cell (d) a big bowl
31. 31.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a small cup (c) a big bowl (d) a balloon
32. 32.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
33. 33.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
34. 34.True or false: a puddle drying up is evaporation. (a) True (b) False
35. 35.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) yeast (d) a tub of water
37. 37.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) faster (c) they never dry (d) they turn to ice
38. 38.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) yeast (c) a magnet (d) a battery cell
39. 39.True or false: a strip of paper is needed for the paper helicopter. (a) False (b) True
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we keep it the same (c) we measure it

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids