Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Transcript of -Earth-
-How old ?
Earth is pretty old but not as old as the universe, universe is about 14 billion years old but Earth is about 4.5 billion years old
Where on earth is earth ?
Earth is in the galaxy called Milky Way which has billions of stars. One of them is our sun; Earth is the third planet from the sun.
-What’s on earth ?
Earth is a home to millions of species of living things. 71 percent is earth is salt water and 29 percent of them is land and fresh water.
http://www.newscientist.com/data/images/ns/cms/dn9761/dn9761-2_800.jpg How big is the Earth The earth is big for a person but not for the sun, 1 million Earth could fit in the sun.
Image from http://share.psu.ac.th/file/teerawat.t/earths-size-compared-to-sun.jpg Surface area of the Earth: 510,072,000 km square Diameter: The Earth has an average diameter of 12,742 kilometers. (7,926 miles) Earth Atmosphere 78percent nitrogend 21 percent oxygen and 1percent other. The Earth’s atmosphere extend up about 80 kilometer. Left image from http://en.wikipedia.org/wiki/File:Atmosphere_gas_proportions.svg Right image from
http://en.wikipedia.org/wiki/File:Atmosphere_layers-en.svg Intresting Video from youtube Intresting Fact About Earth
1.It's actually 23 hours, 56 minutes and 4 seconds. This is the amount of time it takes for the Earth to completely rotate around its axis; astronomers call this a sidereal day.
2.Earth is mostly iron, oxygen and silicon
If you could separate the Earth out into piles of material, you'd get 32.1 % iron, 30.1% oxygen, 15.1% silicon, and 13.9% magnesium. Of course, most of this iron is actually down at the core of the Earth. If you could actually get down and sample the core, it would be 88% iron. 47% of the Earth's crust consists of oxygen.
More at http://www.universetoday.com/guide-to-space/earth/10-interesting-facts-about-planet-earth/
by Tim Y7a