Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 984 · 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 shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the tub of water (c) whether it floats (d) the amount of clay
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
3. 3.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) food colour (d) table salt
4. 4.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) water with food colour (c) a tall clear glass (d) a balloon
7. 7.True or false: water becoming ice is freezing. (a) False (b) True
8. 8.True or false: sugar in icy water dissolves slower. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a magnetic chess set (d) a magnetic pin holder
10. 10.🔍 Which is the odd one out? (a) an ice cube (b) an iron nail (c) a metal key (d) a coin
11. 11.True or false: water from the oars goes forward. (a) True (b) False
12. 12.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) some water evaporates (c) it turns to salt (d) it turns to ice
13. 13.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a battery cell (d) a towel for spills
14. 14.🧺 Do we need a battery cell for the paper helicopter? (a) not needed (b) needed
15. 15.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
16. 16.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass leaks (b) ice escapes the glass (c) the glass sweats (d) vapour in air cools
17. 17.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
18. 18.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) a little shaking (d) lots of salt stirred in
19. 19.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
22. 22.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) small test objects (c) a towel for spills (d) a results table
24. 24.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the card flies away (d) the glass breaks
25. 25.True or false: a piece of thermocol floats on water. (a) True (b) False
26. 26.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the sugar turns to salt (c) some stays undissolved (d) the water turns solid
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) a towel for spills (d) a magnet
30. 30.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a long string (d) turmeric powder
32. 32.True or false: a balloon is not needed for the density tower. (a) False (b) True
33. 33.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
34. 34.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a few hours of waiting (c) food colour (d) a white flower
36. 36.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) whether it floats (c) the amount of clay (d) the tub of water
38. 38.💧 Which of these does not let water climb? (a) a glass marble (b) a piece of chalk (c) a paper towel (d) a sugar cube
39. 39.True or false: a tall clear glass is needed for the density tower. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a plastic ruler (d) a cotton thread

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