Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 93 · 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.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
2. 2.🛟 Which of these sinks in water? (a) a metal key (b) an ice cube (c) a dry leaf (d) a feather
3. 3.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) yeast (d) a towel for spills
4. 4.🛟 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
5. 5.⚖️ 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 amount of clay (c) the kind of clay (d) the tub of water
6. 6.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.⚖️ 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
9. 9.🛟 Does a coin float or sink in water? (a) sinks (b) floats
10. 10.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) its hollow shape (d) it has a magnet
11. 11.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
12. 12.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it sinks (c) it bounces up (d) it dissolves
13. 13.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a tub of water (d) yeast
14. 14.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) leave water on the floor (d) wipe up spills at once
15. 15.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) a magnet (d) a results table
18. 18.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
19. 19.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
20. 20.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) both of them (d) the big log
21. 21.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
22. 22.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
23. 23.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a mirror (c) a battery cell (d) a magnet
24. 24.⚖️ 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 amount of clay (c) the shape of the clay
25. 25.⚖️ 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) whether it floats (c) the tub of water (d) the amount of clay
26. 26.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it dissolves (c) it sinks faster (d) it turns to stone
27. 27.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
28. 28.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
29. 29.🛟 Which of these sinks in water? (a) a ping-pong ball (b) an ice cube (c) a coin (d) an ice-cream stick
30. 30.🔍 Which is the odd one out? (a) a glass marble (b) a ball of clay (c) a cork (d) a metal key
31. 31.🌊 What pushes a floating cork upward? (a) the tub (b) the air above (c) the water (d) the cork itself
32. 32.🛟 Which of these floats on water? (a) a metal key (b) a pebble (c) a glass marble (d) a dry leaf
33. 33.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it still floats (d) it sinks
34. 34.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a balloon (c) a magnet (d) a results table
35. 35.🔍 Which is the odd one out? (a) an ice cube (b) a cork (c) a metal key (d) an empty capped bottle
36. 36.True or false: a dry leaf sinks in water. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a coin (b) a ping-pong ball (c) an iron nail (d) a ball of clay
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a results table (c) small test objects (d) a tub of water
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) False (b) True
40. 40.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it sinks (d) it turns blue

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