the material world

The Material World

2˚ ESO BIL Science

Presentation by Liannette Bellido

October 2010

Matter

• Matter is anything that occupies space and

can be measured.

Examples:

water, rocks, animals, and plants.

TRUE OR FALSE?

Everything around us is

made of matter.

TRUE

Properties of matter

• Matter has three properties:

•DIMENSION

•INERTIA

•GRAVITATION

Properties of matter

• Matter has dimensions, that means that

two pieces of matter cannot occupy the

same space.

Example: Two persons cannot sit in the

same chair.

• Intertia is the resistance of mass to a

change in its state of motion.

• Inertia is the way in which we measure

mass. If a body has double the mass of

another, it has double the inertia too.

For example: The Inertia of a car is

BIGGER than that of a shopping cart

because the car has more mass.

Properties of matter

Wich one is easier to move?

A shopping cart A car

The Inertia of a shopping cart is smaller than

that of a car.

• Gravitation is the attraction between

two objects.

• Is the force responsible of the fall of

objects, the movements of planets, and

the existance of tides.

Properties of matter

• Gravitation is another way in which we

measure mass. For example: the mass

of Jupiter is 310 times BIGGER than the

mass of Earth.That means that Jupiter

has more gravitation than Earth.

• Mass is related to the amount of matter.

• Can be measured according to the inertia

and gravity of the matter.

• The Mass of an object remains the same

always at any place.

• Weight is the force which a given massfeels due to gravitation.

Mass and Weight are NOT the same!

All About Mass

If you go to the Moon, what changes?

Your weight or your mass?

The mass always stays the same. Your weight changes!

• Density is the relationship between the

mass and volume of a body.• Density= Mass/Volume

All About Density

A body can be BIG but

have less mass.

A body can be small but

have more mass.

Bodies and systems of matter

• The objects that surround us and have definite limits

are called bodies of matter.

Example: A rock.

• Things with limits that are not precise are called

systems of matter

Example: A forest.

Wich object has definite limits?

Wich object has limits that are not

precise?

A tennis ball has definite limits. That means that it is

a body of matter.

A beach has limits that are not precise. That means

that it is a system of matter.

Observing the material word• There are two scales in wich the

material world is observe.

– Macroscopic observation: Can be

percieved by our senses without the

help of instruments.

– Microscopic observation: Cannot be

percived by our senses without the

help of instruments.

Wich one is Macroscopic?

Wich one is Microscopic?

Macroscopic Microscopic

A plant A cell

Matter

has

present

originates

DimensionsInertia Gravitation

depends on

Mass

characterized by

Volume

are related by

Density