Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 805 · 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.🔮 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
2. 2.🔍 Which is the odd one out? (a) a coin (b) a glass marble (c) a steel spoon (d) a dry leaf
3. 3.🔍 Which is the odd one out? (a) a feather (b) a pebble (c) a coin (d) a steel spoon
4. 4.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a balloon (c) a tub of water (d) a results table
5. 5.⚖️ 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
6. 6.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
7. 7.True or false: a ball of clay floats on water. (a) True (b) False
8. 8.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a mirror (c) a battery cell (d) a results table
9. 9.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it can float (c) it sinks faster (d) it dissolves
10. 10.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) its hollow shape (c) it has a magnet (d) steel is very light
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) an iron nail (b) a cork (c) a piece of thermocol (d) an empty capped bottle
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the tub of water (c) whether it floats (d) the shape of the clay
14. 14.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it sinks (c) it bounces up (d) it floats
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
16. 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a balloon (c) small test objects (d) a results table
17. 17.🔍 Which is the odd one out? (a) a coin (b) a steel spoon (c) a ball of clay (d) a piece of thermocol
18. 18.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the float-or-sink test? (a) a battery cell (b) small test objects (c) a towel for spills (d) a results table
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a battery cell (c) a towel for spills (d) a tub of water
21. 21.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) leave water on the floor (d) play near a deep pond
22. 22.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is magnetic (c) ice is less dense (d) water is sticky
23. 23.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the air above (d) the cork itself
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.⚖️ 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 shape of the clay (c) the tub of water
26. 26.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
27. 27.🛟 Does a coin float or sink in water? (a) floats (b) sinks
28. 28.True or false: a steel spoon floats on water. (a) False (b) True
29. 29.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
30. 30.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) the small pebble (c) both of them (d) neither of them
31. 31.⚖️ 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) the shape of the clay (c) whether it floats (d) the kind of clay
32. 32.⚖️ 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
33. 33.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to splash everyone (d) to win a prize
34. 34.⚖️ 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) True (b) False
35. 35.🛟 Which of these floats on water? (a) a pebble (b) a steel spoon (c) a feather (d) an iron nail
36. 36.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
37. 37.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a coin (c) a dry leaf (d) a feather
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a results table (d) a mirror
39. 39.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a results table (c) a tub of water (d) a towel for spills

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