Mass is a measure of the quantity of matter in an object at rest relative to the observer.

True or False? Mass is a vector quantity.

False. Mass is a scalar quantity.

The S.I. unit for mass is kg. What does kg stand for?

The S.I. unit kg stands for kilograms.

Define weight in terms of the effect of a gravitational field. (Extended Tier Only)

Weight is the effect of a gravitational field on an object with mass.

Define gravitational field strength .

Gravitational field strength is the force per unit mass acting on an object in a gravitational field.

True or False? Weight is a measure of the quantity of matter in an object. (Extended Tier Only)

False. Weight is a gravitational force on an object with mass.

True or False? An object's mass varies depending on the gravitational field strength .

False. An object's mass is independent of gravitational field strength.

What is the purpose of using a balance ?

A balance is used to compare the weights of two objects or to measure the mass of an object.

How is weight affected by the gravitational field strength ? (Extended Tier Only)

Weight is affected by the gravitational field strength; the stronger the gravitational field , the greater the weight of the object.

Density is defined as the mass per unit volume of a material. It describes how much mass is contained in a given volume.

True or False? \n\nObjects made from high-density materials typically have low mass .

False. Objects made from high-density materials typically have a high mass.

State the units for density when mass is in grams ( g ) and volume is in cubic centimetres ( cm³ ).

The units for density are grams per cubic centimetre (g/cm³) when mass is measured in grams (g) and volume in cubic centimetres (cm³).

Why are gases generally less dense than solids?

Gases are generally less dense than solids because the molecules in a gas are more spread out over a larger volume.

True or False? \n\nDensity is a scalar quantity.

True. Density is a scalar quantity.

Volume is the amount of space occupied by an object in three-dimensional space.

Identify which object is more dense, the one on the left or the one on the right.\n\n! Two cubes with pink spheres inside; the left cube has 4 spread-out spheres, and the right cube is filled with 14 closely packed spheres. {width=1100 height=301}

The object on the right is more dense because the particles are packed more closely together.

When an irregular object is fully submerged, the volume of water it ______ is equal to the volume of the object.

When an irregular object is fully submerged, the volume of water it displaces is equal to the volume of the object.

When measuring the density of a liquid, how do you find the mass of the liquid ?

Subtract the mass of the empty measuring cylinder from the mass of the cylinder with the liquid in it. Mass of liquid = mass of cylinder with liquid − mass of empty cylinder

Which instrument would you use to measure the dimensions of a very small object most accurately?

A micrometer , which measures objects around 3 cm in length with a resolution of 0.001 mm. A ruler (up to 30 cm) or Vernier calipers (around 15 cm) are used for larger objects.

True or False? \n\nWater should be poured into the measuring cylinder while it is on the digital balance.

False. Water should not be added while the cylinder is on the balance, as a spill onto the electric balance could cause an electric shock .

Why should you repeat your measurements and take an average in this experiment?

Repeating measurements and taking an average reduces the effect of random errors , giving a more reliable result.

Upthrust is a force that pushes upwards on an object submerged in a fluid (a liquid or a gas). It acts in the opposite direction to the object's weight and is caused by the pressure difference between the top and bottom of the object.

True or False? Upthrust always pushes downwards on a submerged object.

False. Upthrust always pushes upwards on a submerged object.

What are the factors affecting whether an object sinks or floats ?

The factors affecting whether an object sinks or floats are the upthrust it experiences and its density . If the upthrust is equal to or greater than the object's weight, and if the object's density is less than the density of the fluid, it will float. Otherwise, it will sink.

A wooden block has a density of 0.9 g/cm³, and freshwater has a density of 1.0 g/cm³. Will the block sink or float in freshwater?

The wooden block will float because its density is less than that of freshwater.

How can you determine if one liquid will float on top of another? (Extended Tier Only)

To determine whether a liquid will float on top of another, compare their densities. The liquid with the lower density will float on top of the one with the higher density, assuming the liquids do not mix.

State the condition for liquid A to float on liquid B.

Liquid A will float on top of liquid B if the density of liquid A is lower than that of liquid B.

True or False? Density is always measured in kilograms ( kg ).

False. Density mass per unit volume . The units could be: kilograms per metre cubed (kg/m 3 ) grams per centimetre cubed (g/cm 3 )

IGCSEPhysicsCambridge (CIE)Flashcards1. Motion, Forces & EnergyMass, Weight & Density

Mass, Weight & Density (Cambridge (CIE) IGCSE Physics): Flashcards

Exam code: 0625 & 0972

1/32

0Still learning

Know0

FrontMass & Weight
Define mass.

Was this flashcard helpful?

Cards in this collection (32)

Define mass.
Mass is a measure of the quantity of matter in an object at rest relative to the observer.
True or False?
Mass is a vector quantity.
False.
Mass is a scalar quantity.
The S.I. unit for mass is kg. What does kg stand for?
The S.I. unit kg stands for kilograms.
Define weight in terms of the effect of a gravitational field. (Extended Tier Only)
Weight is the effect of a gravitational field on an object with mass.
Define gravitational field strength.
Gravitational field strength is the force per unit mass acting on an object in a gravitational field.
True or False?
Weight is a measure of the quantity of matter in an object. (Extended Tier Only)
False.
Weight is a gravitational force on an object with mass.
True or False?
An object's mass varies depending on the gravitational field strength.
False.
An object's mass is independent of gravitational field strength.
What is the purpose of using a balance?
A balance is used to compare the weights of two objects or to measure the mass of an object.
How is weight affected by the gravitational field strength? (Extended Tier Only)
Weight is affected by the gravitational field strength; the stronger the gravitational field, the greater the weight of the object.
Define density.
Density is defined as the mass per unit volume of a material. It describes how much mass is contained in a given volume.
True or False? \n\nObjects made from high-density materials typically have low mass.
False.
Objects made from high-density materials typically have a high mass.
What is the equation for the density of an object?
The equation for density is $ρ = \frac{m}{V}$
Where:
- ρ = density, measured in kg / m³
- $m$ = mass, measured in kilograms (kg)
- $V$ = volume, measured in metres cubed (m³)
State the units for density when mass is in grams (g) and volume is in cubic centimetres (cm³).
The units for density are grams per cubic centimetre (g/cm³) when mass is measured in grams (g) and volume in cubic centimetres (cm³).
Why are gases generally less dense than solids?
Gases are generally less dense than solids because the molecules in a gas are more spread out over a larger volume.
True or False? \n\nDensity is a scalar quantity.
True.
Density is a scalar quantity.
Define volume.
Volume is the amount of space occupied by an object in three-dimensional space.
State the equation used to calculate the volume of an object.
The equation used to calculate the volume of an object is $V = l \times w \times h$
Where:
- $l$ = length of object, measured in metres (m)
- $w$ = width of object, measured in metres (m)
- $h$ = height of object, measured in (m)
Identify which object is more dense, the one on the left or the one on the right.\n\n!Two cubes with pink spheres inside; the left cube has 4 spread-out spheres, and the right cube is filled with 14 closely packed spheres. (opens in a new tab){width=1100 height=301}
The object on the right is more dense because the particles are packed more closely together.
How do you measure the density of a regularly shaped object?
Measure its mass using a digital balance, and measure its dimensions using a ruler, Vernier calipers or micrometer.
Calculate its volume from its shape, then find the density using:
$ρ = \frac{m}{V}$
How do you measure the density of an irregularly shaped object?
Measure its mass using a digital balance.
Lower it into a displacement (eureka) can and collect the overflowing water in a measuring cylinder. Measure the volume of this water, then find the density using:
$ρ = \frac{m}{V}$
When an irregular object is fully submerged, the volume of water it ______ is equal to the volume of the object.
When an irregular object is fully submerged, the volume of water it displaces is equal to the volume of the object.
When measuring the density of a liquid, how do you find the mass of the liquid?
Subtract the mass of the empty measuring cylinder from the mass of the cylinder with the liquid in it.
Mass of liquid = mass of cylinder with liquid − mass of empty cylinder
Which instrument would you use to measure the dimensions of a very small object most accurately?
A micrometer, which measures objects around 3 cm in length with a resolution of 0.001 mm.
A ruler (up to 30 cm) or Vernier calipers (around 15 cm) are used for larger objects.
True or False?\n\nWater should be poured into the measuring cylinder while it is on the digital balance.
False.
Water should not be added while the cylinder is on the balance, as a spill onto the electric balance could cause an electric shock.
Why should you repeat your measurements and take an average in this experiment?
Repeating measurements and taking an average reduces the effect of random errors, giving a more reliable result.
Define upthrust.
Upthrust is a force that pushes upwards on an object submerged in a fluid (a liquid or a gas). It acts in the opposite direction to the object's weight and is caused by the pressure difference between the top and bottom of the object.
True or False?
Upthrust always pushes downwards on a submerged object.
False.
Upthrust always pushes upwards on a submerged object.
What are the factors affecting whether an object sinks or floats?
The factors affecting whether an object sinks or floats are the upthrust it experiences and its density.
If the upthrust is equal to or greater than the object's weight, and if the object's density is less than the density of the fluid, it will float. Otherwise, it will sink.
A wooden block has a density of 0.9 g/cm³, and freshwater has a density of 1.0 g/cm³. Will the block sink or float in freshwater?
The wooden block will float because its density is less than that of freshwater.
How can you determine if one liquid will float on top of another? (Extended Tier Only)
To determine whether a liquid will float on top of another, compare their densities. The liquid with the lower density will float on top of the one with the higher density, assuming the liquids do not mix.
State the condition for liquid A to float on liquid B.
Liquid A will float on top of liquid B if the density of liquid A is lower than that of liquid B.
True or False?
Density is always measured in kilograms (kg).
False.
Density mass per unit volume. The units could be:
- kilograms per metre cubed (kg/m³)
- grams per centimetre cubed (g/cm³)

Sign up to unlock flashcards

By signing up you agree to our Terms and Privacy Policy

Previous:MotionNext:Effects of Forces