Science Homework Answers--^^

YO 1P3, SRY FOR LATING U ALL WAIT FOR SO LONG 'CAUSE I GOT TO PREPARE FOR THE ANSWERS OF THE SCIENCE W.S. HERE ARE THE ANSWERS: ENJOY

SIGNING OFF,
DANIEL, ADMIN

Secondary 1 Science
Density and Floating
(worksheet 1) 7 April 2009

1a)Ethanol-top layer
Oil -second layer
water -water

1b)
solid -between ethanol and oil

1c)i) When two or more liquids which do not mix are put together, the _denser_ liquid will be at the bottom and the _less dense_ liquid will be at the top.

ii)A solid will float in a liquid if it is _less denser_than the liquid.

iii)A solid will sink in a liquid if it is _denser_than the liquid.

2) Ans: The ship with a cargo of styrofoam will float lower in water. The cargo's weight make the ship float lower in the water. (I found this question on9 and got the ans.)=)

3) 1)b
2)d

Secondary 1 Science
IT lesson on Density
7 April 2009 (Activity 1)

Mass Volume Density Does it float Rank
2.Blue square 78.0g 29.0ml 2.69g/ml No 6(Most dense)
Red square 19.5g 14.0ml 1.39g/ml No 4
Purple oval 4.0g 5.0ml 0.8g/ml Yes 2
Pink square 11.0g 9.0ml 1.22g/ml No 3
Red oval 65.0g 40.0ml 1.63g/ml No 5
Green tri. 2.0g 21.0ml 0.1g/ml Yes 1(least dense)
What is the density of the liquid in the pail? _1.0g/ml_