Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 686 · 40 questions

What you do (Float or sink?): 1. Fill a tub with water on a towel, with an adult nearby. 2. Guess “float” or “sink” for each object and write it in a table. 3. Gently place each object on the water and write what happens. 4. Press the sinking clay into a boat shape and try again; wipe up spills.

1. 1.🧺 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) a tub of water (d) a mirror
2. 2.🛟 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 splash everyone (d) to hide the corks
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) False (b) True
4. 4.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a towel for spills (d) a balloon
5. 5.🛟 Which of these sinks in water? (a) a cork (b) a glass marble (c) a ping-pong ball (d) an empty capped bottle
6. 6.🛟 Which of these floats on water? (a) a metal key (b) a cork (c) a pebble (d) a ball of clay
7. 7.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it turns blue (c) it sinks (d) it melts
8. 8.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a magnet (c) turmeric powder (d) small test objects
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) an iron nail (b) an ice-cream stick (c) a cork (d) a dry leaf
11. 11.🛟 Does a feather float or sink in water? (a) floats (b) sinks
12. 12.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
13. 13.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) False (b) True
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
16. 16.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
17. 17.🛟 Does a coin float or sink in water? (a) sinks (b) floats
18. 18.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
19. 19.⚖️ 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) the kind of clay (c) the amount of clay (d) whether it floats
20. 20.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
21. 21.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) water is sticky (c) ice is less dense (d) ice is very cold
22. 22.🔍 Which is the odd one out? (a) a piece of thermocol (b) a dry leaf (c) a pebble (d) a ping-pong ball
23. 23.🧺 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 magnet (d) small test objects
24. 24.🛟 Does a cork float or sink in water? (a) sinks (b) floats
25. 25.True or false: a cork sinks in water. (a) True (b) False
26. 26.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a magnet (d) small test objects
27. 27.🛟 Which of these sinks in water? (a) a feather (b) a piece of thermocol (c) a metal key (d) an ice cube
28. 28.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
29. 29.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) lots of salt stirred in (c) a few ice cubes (d) more plain water
30. 30.🛟 Which of these sinks in water? (a) an ice cube (b) a dry leaf (c) a piece of thermocol (d) a steel spoon
31. 31.🔍 Which is the odd one out? (a) a steel spoon (b) a metal key (c) a coin (d) a feather
32. 32.🧺 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 balloon (d) a towel for spills
33. 33.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it turns to stone (c) it can float (d) it sinks faster
34. 34.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the air above (d) the water
35. 35.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a magnet (c) a mirror (d) yeast
36. 36.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it still floats (d) it sinks
37. 37.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a towel for spills (c) a battery cell (d) a mirror
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the kind of clay (c) the shape of the clay
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a battery cell (d) a towel for spills

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