Posted in Geography, Our Planet, Our Solar System, Social Science

Our Solar System : The Earth

1. The Earth – is the densest major body in the solar system.

2. Earth is the third planet from the – sun

3. Earth is the fifth largest of the planets in the – solar system

4. Earth has a diameter of roughly – 8,000 miles (13,000 kilometers)

5. 71 percent of Earth’s surface is covered by – water

6. Earth is – 23.439 hours to complete a rotation on its axis, and roughly 365.26 days to complete an orbit around the sun.

7. Earth is – a bit closer to the sun in early January and farther away in July, although this variation has a much smaller effect than the heating and cooling caused by the tilt of Earth’s axis.

8. Earth’s atmosphere is – roughly 78 percent nitrogen, 21 percent oxygen, with trace amounts of water, argon, carbon dioxide and other gases.

9. Earth’s atmosphere can be divided (called atmospheric stratification) into – five main layers

10. Exosphere – 700 to 10,000 km (440 to 6,200 miles)

11. Thermosphere – 80 to 700 km (50 to 440 miles)

12. Mesosphere – 50 to 80 km (31 to 50 miles)

13. Stratosphere – 12 to 50 km (7 to 31 miles)

14. Troposphere – 0 to 12 km (0 to 7 miles)

15. Earth is average distance from the sun – 92,956,050 miles (149,598,262 km)

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s