1. Activity 2.1 This Place Called Earth review

2. Do You Remember The 7 Activities? 1.What is Earth made of? 2.How much water is there? 3.What forms does water come in? 4.What is the heat capacity of water? 5.What is special about surface tension? 6.Where is earth in the “Big Picture”? 7.How is Earth like a space station?

3. WHAT IS THE EARTH MADE OF? Key words: Core, mantle, crust Lithosphere Atmosphere Hydrosphere Ecosphere (biosphere) Earthquake waves

4. How Much Water Is There? Our Earth is 70% water, 30% land. Water is the most abundant compound in all living organisms! The “blue planet” Water is found in lakes, rivers, streams, soils, aquifers, glaciers, ice caps and in the atmosphere.

5. What Forms Does Water Come In? At normal climatic temperatures, water occurs in all 3 states! It is the molecular speed that determines the state of matter. Heat is needed to change water’s physical state. What happens when liquid water freezes? Why is this important to life on Earth?

6. What Is The Heat Capacity Of Water? Heat capacity- the ability of a substance to absorb and retain heat. Which substance took the longest to heat up? Cool down? Why is this important for life on Earth? Oceans moderate the Earth’s climate!! Why do deserts have more extreme daily temperatures than places by the ocean?

7. What Is Special About Surface Tension? Surface tension - the ability of water molecules to stick together. Why is surface tension important to life on Earth?

8. Where Is Earth In The Big Picture? How is the placement of Earth within our solar system important to life?

9. Why Is Earth Like A Spaceship? Think: Cycles Law of conservation of matter

10. What Word Comes To Mind??? Ability of water molecules to stick together Surface tension Ability of water to absorb and retain heat Heat capacity Determines the state of water Molecular speed (heat) Thinnest layer of our earth Crust Explains the parts of the Earth (core, crust, mantle) Earthquake waves

11. Enables water to travel through roots, and up tree trunks Surface tension Where all life can be found Biosphere The solid portion of Earth’s crust Lithosphere What percent of our planet is water? 70% Ice is ____ dense than liquid water less

12. Name 3 inputs for both humans and animals Oxygen, food, water Name 3 outputs of both humans and animals. CO 2, feces, urine, water vapor Name 3 outputs of plants Water, food, oxygen, non-food plant material Be able to give specific examples of how outputs/inputs are related.