Introduction to Earth Systems, with english as a second language, used at my International School. Includes Atmosphere, Geosphere, Hydrosphere, Biosphere as well as Constructive and Destructive Forces.

1. WHAT ARE BOUNDARIES???
3Types, what are they?
What are the results for each one?
Present them please!

2. EARTH’S SYSTEMS

3. WHAT ARE SYSTEMS?
 Gimme examples!

4. THE SEARCH FOR SYSTEMS!
In teams of 4, please find:
1. Atmosphere 2. Geosphere
3. Hydrosphere 4. Biosphere
5. Constructive Forces 6. Destructive Forces

5. ENERGY
 The ability to do Work
 Work is the force used to move an object.
 Two main sources of Energy for Earth
1. The Sun (external)
2. The Core (internal)

7. ATMOSPHERE
 Earth’s outermost layer (relatively thin).
 Reason for different climates in the world
 Mixture of nitrogen & oxygen.
 Cloud droplets and water vapor.
 Contains dust particles.

8. GEOSPHERE
 Most of Earth’s mass.
 Solid rocks and metals.
 3 main parts
1. Crust
2. Mantle
3. Core

9. HYDROSPHERE
 Contains all of Earths water.
 71% of Earth is covered in water.
 Lots of different forms:
 Oceans.
 Glaciers.
 Rivers.
 Lakes.
 Groundwater.
 Water vapour.
 Only a very small amount is drinking water, most is salt (96.5%)!

10. BIOSPHERE
 Parts of Earth that contain living organisms.
 Interacts with the other three spheres.

13. FEEDBACK
 A system returns information about a change in a system.
 Changes in one system could affect another system.
 If plants die, no more food for animals!
 If we lose a lot of water, all the fish will have very little space to
swim!
 A melting glacier, increases water and makes us have less land,
more water vapour in the air therefore more rain and flooding!
 Feedback can:
 Increase or slow down the effects of change.

14. YOU’RE A QUIZARD HARRY!
 What is Earth’s INTERNAL Energy Source?
 Core
 What is Earth’s EXTERNAL Energy Source?
 Sun
 Why is the Sun’s heat important to Earth?
 It makes it warm enough for people to live on Earth.
 Why is sunlight important for Earth?
 Plants and other things use sunlight to make food.

15.  What other things does the Sun do?
 Seasons.
 What are the three parts of the Geosphere?
 Crust, Mantle & Core.
 What makes the Core different from the Crust and the Mantle?
 Made of Metal.
 What metal?
 Iron & Nickel.

16.  Which sphere is water based?
 Hydrosphere
 Which sphere is ground based?
 Geosphere
 Which sphere is air based?
 Atmosphere
 Which sphere has all three?
 Biosphere

17. CONSTRUCTIVE FORCES
 Shape the land’s surface by building up mountains, volcanoes
etc.

18. DESTRUCTIVE FORCES
 Destroy & wear away landmasses through Erosion & Weathering.
 Erosion –The slow destruction of something, rock is picked up
and moved to other places.
 Weathering – Rock is broken down into smaller & smaller pieces.
 Destroyed by 4 Forces:
1. Gravity 2.Water
3.Wind 4. Ice

20. QUIZZIE MAGUIRE
 Why don’t mountains keep getting higher and higher?
 Destructive forces like wind and erosion from rain stop it from
happening.
 How is wind destructive?
 Wind carries sand, this erodes rocks, it picks up pieces of rock
and carries them away.
 Can humans be destructive?
 Yes, we break rocks, put them in different places, building roads,
buildings, cities etc.

21. THANKYOU!
 Homework –Worksheets 9D & 9F