2.  AGE: At least 4.5 billion years old
 SIZE: 7,926.41 miles (12,756.32
km)equatorial diameter
 MASS: 6,600,000,000,000,000,000,000
short tons. (5.9736×1024 kg)
 SURFACE AREA: 196,800,000 square
miles (509,700,000 square km)

3.  ONE DAY: 23 hours, 56 minutes, 4.09
seconds (We round this to 24 hours)
 ONE YEAR: 365 days, 6 hours, 9
minutes, 9.54 seconds (We round this to
365 days)
 DISTINCTIVE FEATURE: (One of the)
Only planet that supports life.

4.  The Earth is the densest planet in the
Solar System.
 Earth is the fifth largest planet in the
Solar System.
 AVERAGE ORBITAL SPEED: 29.8 km
per second.
 DISTANCE FROM THE SUN: min. 146
million km (91million miles) Max. 152
million km (94.5 million miles).

5.  ATMOSPHERE COMPOSITION: Nitrogen
(78%), oxygen (1%), argon (1%), with other
gases making up the remainder.
 CRUST COMPOSITION: Oxygen
(46.6%), silicon (27.7%), aluminum
(8.1%), iron (5%), calcium (3.6%), sodium
(2.8%), potassium (2.6%), magnesium
(2%), and other elements making up the
remainder.
 TEMPERATURE: Ranging from 136 degrees
Fahrenheit (58 degrees Celsius) to -128.6
degrees Fahrenheit (-89.6 degrees
Celsius). 57 degrees Fahrenheit (14
degrees Celsius) average.

6.  CIRCUMFERENCE:
40,075.017 km (equatorial)
40,007.86 km (meridional)
 SURFACE AREA: 510,072,000 km2
2
148,940,000 km land (29.2 %)
2
361,132,000 km water (70.8 %)
 AXIAL TILT: 23°26'21".4119

8. HYDROSPHERE- is the liquid
water component of the
Earth. It includes the
oceans, seas, lakes, ponds, riv
ers and streams. The
hydrosphere covers about
70% of the surface of the
Earth.

9.  Oceans- 96.5% of water found here
 Fresh water-3.5% of water found
here
 Fresh water distribution:
 Ice: 1.762%
 Groundwater: 1.7%
 Surface Fresh Water: 0.014%
 Atmosphere and soil: 0.002%

10. Water is a part of living
cells
Water provides a habitat
Regulating climate
Human needs