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Friday, May 26 2017 @ 03:46 PM CDT
 Forum Index >  Test Paper Related >  Primary 4 Matters
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By: jentankq (offline)  Saturday, April 23 2011 @ 01:02 PM CDT (Read 1534 times)  
jentankq

Hi,
Please help me of the followings.
I have one more question.

1)Mary sets up an experiment. She sticks a cotton wool to the bottom of a glass. Then she inverts the glass and pushes it into the basin of water.

a) Explain why the cotton wool will not get wet.

b))Mary realised that there is some water in the glass. Explain why this is so.

Kindly help to solve. Thank you.

2)Please help me of the following.

John fixed a tube to a balloon and placed it into a basin of water which os half-filled.

a)What will happen to the water level in the basin when air is blown through the tube?

b)Explain your answer based on the above?

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Registered: 11/12/09
Posts: 5

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By: TEOTECKWAH (offline)  Monday, April 25 2011 @ 08:03 AM CDT  
TEOTECKWAH

Quote by: jentankq

Hi,
Please help me of the followings.
I have one more question.

1)Mary sets up an experiment. She sticks a cotton wool to the bottom of a glass. Then she inverts the glass and pushes it into the basin of water.

a) Explain why the cotton wool will not get wet.

b))Mary realised that there is some water in the glass. Explain why this is so.

Kindly help to solve. Thank you.

2)Please help me of the following.

John fixed a tube to a balloon and placed it into a basin of water which os half-filled.

a)What will happen to the water level in the basin when air is blown through the tube?

b)Explain your answer based on the above?



1a)air occupies space.
1b)water occupies space.
2a)the water level will rise.
2b)air occupies space.

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Registered: 09/23/09
Posts: 14

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