1. Slide
60 seconds
Earth's 4 Main Systems
Atmosphere Hydrosphere Biosphere Lithosphere
2. Slide
60 seconds
What is a system?
A system is an organized group of related objects or components
3. Slide
60 seconds
Atmosphere
The thin layer of air, mostly nitrogen and oxygen, that surrounds Earth. The atmosphere provides oxygen for living things, protects the Earth from harmful radiation from the Sun, and helps regulate the temperature on earth.
4. Slide
60 seconds
5. Slide
60 seconds
Hydosphere
Hydrosphere: All the water on Earth. About 97% of Earth’s water is salt water. 2% of the earth's water is stored as fresh water in glaciers, ice caps, and snowy mountain ranges. 1% of earth's water available to us for our daily water supply needs.
6. Slide
60 seconds
7. Slide
60 seconds
Biosphere
All the living organisms on Earth from bacteria to plants to animals. Most organisms live on Earth’s surface, but some live in the deep ocean or atmosphere.
8. Slide
60 seconds
9. Slide
60 seconds
Lithosphere
Lithosphere (also called the geosphere): The solid rock part of Earth, including mountains, valleys, continents, and all of the rock beneath the oceans. The lithosphere includes the surface of Earth down to the center.
10. Slide
60 seconds
11. Slide
60 seconds
L1.2 Topography
We can describe the topography of a region by measuring the height or depth of that feature relative to sea level - the height of the ocean’s surface A topographic map of an area shows the differences in height or elevation for mountains, craters, valleys, and rivers.
12. Slide
60 seconds
13. Slide
60 seconds
L1.2 Analyze It
On the graph paper, plot the heights and/or depths of each of the Earth features given in the table. Each square on the Y axis represents 500 meters.
14. Slide
60 seconds
What is the difference between a canyon and trench?
A canyon is formed by water erosion, like from a river. A trench is formed by the action of tectonic plates and is generally much larger.
15. Slide
60 seconds
Seamount
A seamount is an underwater mountain with steep sides rising from the seafloor. Usually volcanic in origin Typically rising more than 1000 metres above the surrounding ocean floor and the sumit does not show on the ocean surfance
16. Open question
100 seconds
If you were standing at sea level, which mountain appears to be taller?
17. Open question
100 seconds
Which mountain is largest from top to bottom?
18. Open question
120 seconds
Looking at the bar graph, what do you conclude is the depth of the normal ocean floor around most of these features? From your table, what is at this level?
19. Open question
120 seconds
If the Mariana Trench is 11,000 m deep and Everest is only 8,800 m high, why isn’t the trench greater from top to bottom than Mount Everest?
20. Drawings
450 seconds
Brain break: Draw a pancake mountain with beautiful syrup waterfall
21. Open question
300 seconds
What information can a map provide that a compass cannot?
22. Open question
300 seconds
What information can a compass provide that a map cannot?
23. Slide
60 seconds
Mercator Projection
Shows lines of longitude that are parallel to one another and perpendicular to lines of latitude, making a GRID. Close to the poles the land masses are very large (e.g. Greenland, Canada, Russia, etc.) South America and Africa look very small in comparison. The ocean distances and latitude/longitude lines are not distorted, so this was good for navigating ocean travel.
24. Slide
60 seconds
25. Slide
60 seconds
Robinson Projection
The Robinson projection shows lines of longitude that are not parallel and do not meet at the poles. Antarctica looks very large. Greenland looks flattened north to south. The size of land masses and ocean sizes looks less distorted than the other two, so this is good for representing both land and water.
26. Slide
60 seconds
Made with ❤️ from Norway