Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 4 · 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.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
2. 2.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
3. 3.True or false: a cork sinks in water. (a) False (b) True
4. 4.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
5. 5.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) small test objects (c) a battery cell (d) a mirror
6. 6.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
7. 7.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) small test objects (c) a results table (d) a towel for spills
9. 9.🔍 Which is the odd one out? (a) a dry leaf (b) an ice cube (c) an empty capped bottle (d) an iron nail
10. 10.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) steel is very light (c) it has a magnet (d) sea water is warm
11. 11.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it floats higher (d) it sinks
12. 12.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
13. 13.⚖️ 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
14. 14.🛟 Which of these sinks in water? (a) a feather (b) a cork (c) a ping-pong ball (d) a metal key
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.True or false: a piece of thermocol floats on water. (a) False (b) True
17. 17.⚖️ 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) the kind of clay (d) whether it floats
18. 18.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
19. 19.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
20. 20.⚖️ 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 tub of water (b) whether it floats (c) the shape of the clay (d) the kind of clay
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a tub of water (d) a magnet
23. 23.🛟 Does a coin float or sink in water? (a) sinks (b) floats
24. 24.🛟 Which of these floats on water? (a) a steel spoon (b) an ice-cream stick (c) a coin (d) an iron nail
25. 25.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is less dense (c) ice is magnetic (d) ice is very cold
26. 26.🛟 Which of these sinks in water? (a) an empty capped bottle (b) an ice-cream stick (c) a piece of thermocol (d) a steel spoon
27. 27.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a ball of clay (c) an ice cube (d) an empty capped bottle
28. 28.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) a little shaking (c) lots of salt stirred in (d) more plain water
29. 29.⚖️ 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) False (b) True
30. 30.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
31. 31.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a results table (c) yeast (d) a tub of water
32. 32.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
33. 33.⚖️ 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
34. 34.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it still floats (d) it dissolves
35. 35.🛟 Does a cork float or sink in water? (a) floats (b) sinks
36. 36.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
37. 37.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
38. 38.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
39. 39.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the tub (d) the air above
40. 40.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) play near a deep pond (d) run around the tub

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