the material world
TRANSCRIPT
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The Material World
2˚ ESO BIL Science
Presentation by Liannette Bellido
October 2010
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Matter
• Matter is anything that occupies space and
can be measured.
Examples:
water, rocks, animals, and plants.
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TRUE OR FALSE?
Everything around us is
made of matter.
TRUE
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Properties of matter
• Matter has three properties:
•DIMENSION
•INERTIA
•GRAVITATION
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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.
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• 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
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Wich one is easier to move?
A shopping cart A car
The Inertia of a shopping cart is smaller than
that of a car.
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• 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
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• 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.
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• 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
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If you go to the Moon, what changes?
Your weight or your mass?
The mass always stays the same. Your weight changes!
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• 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.
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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.
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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.
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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.
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Wich one is Macroscopic?
Wich one is Microscopic?
Macroscopic Microscopic
A plant A cell
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Matter
has
present
originates
DimensionsInertia Gravitation
depends on
Mass
characterized by
Volume
are related by
Density