INTRO TO EARTH SCIENCE -EARTH SPERES.pptx

Earth Spheres - Year 8 science - Earth Science

1. LESSON STARTER: WHAT DID YOU GET UP TO OVER THE BREAK?

2. TERM 4: EARTH SCIENCE Earth science is a branch of science that integrates the four spheres of the earth, their interactions, and how the earth interacts in space. Pre test: Concept map - Create a concept map of all the information that you already know about Earth Science.

3. SUMMATIVE ASSESSMENT: Assessment item this term will be an exam. The exam will be held during block exams end of week 7- week 8.

4. TERM INTENTION: Based off the concept map you created and the assessment item. Write a learning intention for the term. This term we will be learning… To succeed we need to ……

5. EARTH SPHERES AND ENERGY FLOW

6. LESSON INTENTION: WALT: - Investigate how Earth’s systems interact with each other. - Understand how energy flows between each sphere WILF: - Identify Earths 4 spheres. - Describe how Earths spheres interact with each other.

7. FORMATION OF EARTH: After watching the video describe how the Earth was formed.

8. DIFFERENTATIATION OF EARTH LAYERS: The Earth’s differentiation describes its formation into layers. The layers were formed due to different density’s of element s, which include its iron-rich solid inner core, its molten outer core, its solid mantle and its crust on which we live.

9. EARTHS CONNECTIONS:

10. EARTH SPHERES: The Earth is composed of four spheres; lithosphere/geosphere, hydrosphere, atmosphere, and biosphere , which interact as part of a complex and dynamic system. The spheres are so closely connected that a change in one sphere often results in a change in one or more of the other spheres.

11. Draw this Table in your book LITHOSPHERE: HYDROSPHERE: ATMOSPHERE: BIOSPHERE:

12. ACTIVITY: EARTH SPHERE’S Summarise the material provided to create a flip book of information. The information in your diagram should: Describe each sphere – including identification of key components that make up each sphere. Image that represents that sphere Describe any interactions between sphere’s.

13. SPHERE INTERACTIONS: VOLCANO Volcanoes (geosphere) may emit large quantities of sulphur dioxide (atmosphere). When atmospheric sulphur dioxide combines with water (hydrosphere), sulfuric and sulfurous acid form. Rain (hydrosphere) may bring these acids to the Earth, acidifying soils (geosphere), lakes and rivers (hydrosphere). Acidic water leaches nutrients from the soil (geosphere) into the water table (hydrosphere), making the soil less fertile for plants (biosphere), and the subterranean water supply (hydrosphere) less potable for humans (biosphere). Acid rain falling on lakes and streams reduces the pH of the water (hydrosphere), which may result in a decrease in phytoplankton and zooplankton growth (biosphere). If photosynthesis is reduced, atmospheric concentrations of carbon dioxide can build up and stimulate global warming (atmosphere) which may contribute to increased melting of glaciers (hydrosphere).

14. ENERGY FLOW: Energy flows through and among the spheres of Earth’s system. The vast majority of energy entering Earth’s system is solar energy, the energy of sunlight. A small fraction of energy enters the system as geothermal energy from deep within Earth’s interior. Energy can be transferred through Earth’s system in many forms. An example is the transfer of heat, or thermal energy, through Earth’s system. This occurs through three processes—radiation, convection, and conduction

15. RESEARCH INQUIRY: CRYOSPHERE Why is the cryosphere important and how does it affect climate?

16. :