Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 999 · 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.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
2. 2.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) a steel spoon (b) an iron nail (c) a coin (d) an empty capped bottle
4. 4.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it dissolves (c) it bounces up (d) it floats
5. 5.🛟 Which of these floats on water? (a) an ice-cream stick (b) a pebble (c) a steel spoon (d) a glass marble
6. 6.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
7. 7.⚖️ 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 kind of clay (b) the amount of clay (c) the tub of water (d) the shape of the clay
8. 8.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) the big log (d) neither of them
9. 9.True or false: an iron nail sinks in water. (a) True (b) False
10. 10.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
11. 11.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it dissolves (d) it can float
12. 12.⚖️ 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) True (b) False
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True
14. 14.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
15. 15.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to splash everyone (d) to keep children safe
16. 16.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a dry leaf (c) an empty capped bottle (d) a glass marble
17. 17.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
18. 18.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) its hollow shape (d) sea water is warm
19. 19.🔍 Which is the odd one out? (a) a piece of thermocol (b) a ping-pong ball (c) a ball of clay (d) an ice cube
20. 20.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it sinks (c) it still floats (d) it turns white
21. 21.🧺 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
22. 22.🛟 Does a coin float or sink in water? (a) sinks (b) floats
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a tub of water (c) a results table (d) small test objects
24. 24.⚖️ 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) False (b) True
25. 25.🛟 Which of these floats on water? (a) a coin (b) a glass marble (c) a cork (d) a ball of clay
26. 26.🧺 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 magnet (d) a towel for spills
27. 27.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
28. 28.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) a cork (b) a metal key (c) a dry leaf (d) a ping-pong ball
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a balloon (c) a tub of water (d) a results table
31. 31.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the shape of the clay (c) the amount of clay (d) the tub of water
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
34. 34.🧺 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) small test objects (d) turmeric powder
35. 35.True or false: an iron nail floats on water. (a) True (b) False
36. 36.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a ball of clay (b) a glass marble (c) a steel spoon (d) a cork
38. 38.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) lots of salt stirred in (c) more plain water (d) a little shaking
39. 39.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
40. 40.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it turns blue (d) it floats higher

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