Mass, Weight and Density

Some students measure the masses and the volumes of differently sized samples of a type of wood.

Which graph shows their results?

Options

The mass of object P is greater than the mass of object Q.

The objects contain different amounts of matter and have a different resistance to change of motion.

Which row is correct?

Options

A student determines the density of a small rock.

The weight of the small rock is $1.2\ \text{N}$.

She pours $100\ \text{cm}^3$ of water into a measuring cylinder.

She carefully submerges the rock in the $100\ \text{cm}^3$ of water. The new reading on the measuring cylinder is $147\ \text{cm}^3$.

What is the density of the rock?

Options

A   $0.026\ \text{N / cm}^3$
B   $0.83\ \text{g / cm}^3$
C   $1.8\ \text{N / cm}^3$
D   $2.6\ \text{g / cm}^3$

A student measures the density of an irregularly shaped stone.

Which items of equipment are needed?

Options

A   a balance and a measuring cylinder containing water
B   a balance and a ruler
C   a ruler and a measuring cylinder containing water
D   a measuring cylinder containing water only

The diagram shows a solid metal block.

Which equation is used to calculate the density of the metal from which the block is made?

Options

A   $\text{density} = \text{mass} \times \text{volume}$
B   $\text{density} = \frac{\text{mass}}{\text{volume}}$
C   $\text{density} = \frac{\text{weight}}{\text{area}}$
D   $\text{density} = \frac{\text{weight}}{\text{volume}}$

The acceleration of free fall on the surface of the Moon is $\frac{1}{6}$ the acceleration of free fall on the surface of the Earth.

What is the approximate weight of a $1\ \text{kg}$ mass on the Moon?

Options

A   $0.98\ \text{N}$
B   $1.6\ \text{N}$
C   $9.8\ \text{N}$
D   $16\ \text{N}$

Which row shows a definition of the mass of an object and an instrument used to measure mass?

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A measuring cylinder containing water is placed on a top-pan balance. An object is placed into the measuring cylinder.

What is the mass and what is the volume of the object?

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Two cubes, X and Y, have the same mass, but the length of a side of X is twice that of Y.

What is the value of the ratio $\frac{\text{density of X}}{\text{density of Y}}$?

Options

A   0.125
B   1.0
C   4.0
D   8.0

Which property of an object determines its resistance to a change from its state of rest or motion?

Options

A   its mass
B   its shape
C   its surface area
D   its volume