Earth Systems / Name: 4th grade PSI - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Earth s Systems 1. Earth s systems can work independently. They do not need each other. TRUE FALSE 2. Match the Earth system to what it includes. hydrosphere biosphere atmosphere geosphere gasses around the Earth plants, animals, humans rocks, Earth s crust and mantle water, rain, snow, rivers, oceans 3. What is one way that the hydrosphere and geosphere interact?

4. What is one way that plants interact with the hydrosphere? 5. Draw a diagram of how one of the tools of mechanical weathering works water, ice, heat, plants, wind, glaciers. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Weathering 1. In your own words, what is weathering?

2. Below is a picture of mountains before being weathered. Using a different color, draw what they might look like after being weathered. 3. In your own words, what is mechanical weathering? 4. In your own words, what is chemical weathering? 5. Choose one of the tools of mechanical weathering water, ice, heat, plants, wind, glaciers and draw a simple diagram of how it works.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Erosion 1. Which diagram depicts erosion? What does it show? 2. Below is a picture of mountains before being weathered or eroded. Using a different color, draw what they might look like after being weathered and eroded.

3. How are weathering and erosion similar? 4. How are weathering and erosion different? - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Biogeology 1. Do all living things change their environments or just some living things? ALL SOME 2. What must organisms do in order to survive in any environment? Give an example.

3. Circle the pictures that are part of the biosphere. 4. Why do some organisms that used to be part of the biosphere no longer exist? 5. Humans are part of the biosphere. What is one way that you impact the physical environment around you.

Earth Systems / Answer Key 4th grade PSI Earth s Systems 1. FALSE 2. hydrosphere gasses around the Earth biosphere plants, animals, humans atmosphere rocks, Earth s crust and mantle geosphere water, rain, snow, rivers, oceans 3. answers will vary, but must include elements from the correct Earth systems 4. answers will vary, but must include elements from the correct Earth systems 5. No, it could not exist if the systems did not work together. Each system relies on the other to work properly. You cannot imagine any of the systems by themself and Earth still being the way it is. Weathering 1. answers will vary, but must have correct main idea (breaks down rocks) 2. mountains should be smaller than in original picture 3. answers will vary, but must have correct main idea (physical processes break down rocks) 4. answers will vary, but must have correct main idea (chemicals change what rocks are made of) 5. drawings will vary, must show one way of mechanical weathering

Erosion 1. The diagram shows broken rock materials being moved to new locations. 2. mountains should be smaller than they were originally, plus material that has come off of the mountains should be shown transported somewhere else, probably in more than one location 3. both wear down the geosphere/earth s surface and make it smaller than it was 4. weathering is breaking down rocks, erosion is transporting those broken down pieces, weathering must occur before erosion Biogeology 1. ALL 2. Organisms must adapt or respond to changes in their environments in order to survive. If they do not, then they will die. 3. 4. Some organisms no longer exist because they did not adapt to changes and they became extinct. 5. Answers will vary.