The features of planet earth that make it a very suitable place for life.

1. UNIQUENESS OFEARTH
WHAT MAKES EARTH SUITABLE FORLIFE
by Narinig ko kay Sir Red

2. SEARCH FOR THE EXTRATERRESTRIAL
• Scientists spent the last decade
searching for extraterrestrial life
• Numerousplanets outside our solar
system called “exoplanets” havebeen
discovered that are said to possibly be
able to support life

3. EARTHS UNIQUE FEATURES THAT MAKES EARTH SUITABLE
FOR LIFE
• Right distance from the sun
• Presence of an atmosphere
• Right amountof gravity
• Presence of magnetosphere
• Presence of molecular oxygen
• Presence of liquid water
• Generation of internal heat
• Energyfrom lightning

4. RIGHT DISTANCE FROM THE SUN
Too hot, water
will evaporate
Too cold, water
will freeze
Just right

5. PRESENCE OF AN ATMOSPHERE
OZONELAYER
• Protects all living
organisms from
harmful UV rays
Gases that are essential for life
• Oxygen is used in respiration.
• Nitrogen for plant growth.
• Carbon dioxide to maintain earth’s
temperature and photosynthesis
Protects us from space debris
• Space debris burn upon entering
the atmosphere

6. RIGHT AMOUNT OF GRAVITY
When gravity is weak earth will loose its
atmosphere
When gravity is too strong, earth will be
bombarded with meteors

7. PRESENCE OF MAGNETOSPHERE

8. PRESENCE OF MOLECULAR OXYGEN
Supports
respiration
Theprocess by whichwe
harvest energyfrom the
food weeat

9. PRESENCE OF LIQUID WATER
water
Cradle of Life
First life formed
Life processes

10. GENERATION OF INTERNAL HEAT

11. ENERGY FROM LIGHTNING