A student determines the density of an irregularly shaped stone. The stone is slowly lowered into a measuring cylinder partly filled with water.
Which other apparatus does the student need to calculate the density of the irregularly shaped stone?
a balance
a thermometer
a metre rule
a stop-watch
The table gives data about four liquids, W, X, Y and Z.
None of the liquids mixes with any of the other liquids.
All the liquids are put in the same container and settle to form four separate layers.
Which statement is correct?
W forms the layer below X .
X forms the top layer.
Y forms the bottom layer.
Z forms the layer below Y .
The table shows the mass and volume of three different liquids, X, Y and Z.
The liquids are placed in the same container. The liquids do not mix.
Which liquid is at the top of the container and which liquid is at the bottom?
liquid at
top
liquid at
bottom
X
Y
X
Z
Y
X
Y
Z