The document discusses Aristotle's ideas on types of terrestrial motion. Aristotle believed there were three types of motion on Earth: natural motion where elements move upwards or downwards to their natural state; voluntary motion for humans and animals who can move through will; and involuntary motion for plants and minerals which can only move through external forces. The document also explains Aristotle's views on different realms of motion and how his ideas were influential but later contradicted by Galileo Galilei.

1. Types of
Terrestrial
Motion

2. • How do objects
move?
•
• How do moving
objects stop from
moving?

3. • The Greek philosophers
sought answers to these
questions about motion.
Their ideas on motion
were significantly
influenced by

5. ARISTOTLE
 a Greek philosopher and
astronomer.
His ideas were accepted because
they were based on observations
and made logical sense.


6. Types of Realms
• Terrestrial Realm -
was unstable and
imperfect, and
there should be a
cause for motion.
•
• Celestial Realm -
the motion of the
objects in the
celestial realm was
perfect and
circular. They all
revolved around
Earth.

7. Types of Terrestrial Motion

9. Air
• Atmosphere

10. Water
• Hydrosphere

11. Fire
• Thermosphere

12. Natural Motion
• Their natural motion is to go
back to their natural state
depending on the element
that composed them.
• Their motion was either
upward or downward.

13. Voluntary Motion
• According to Aristotle,
voluntary motion was an
innate characteristic of
humans and animals. The
cause of their motion was in
themselves because they
have the will to move.
•

14. Involuntary Motion
• the characteristic motion of
plants and minerals. They could
not move because they do not
have the will to do so. They
could only move due to
mechanical forces.
• Many years after Aristotle’s time,
an Italian physicist, Galileo
Galilei contradicted Aristotle’s
ideas on motion.

15. • The three types of terrestrial motion
according to the Aristotelian
mechanics are:
• • natural motion where objects tend to
go back to their natural state, which is
based on the element that composes
them;
• • voluntary motion of humans and
animals due to their innate will to
move; and
• • involuntary motion of minerals and
plants due to mechanical forces.