BELLRINGER How close a group of measurements are to each other is called. 1. estimation 2. accuracy 3. precision. 0% 0% 0% 0% 4.

Transcription

1 BELLRINGER How close a group of measurements are to each other is called 1. estimation 2. accuracy 3. precision 0% 0% 0% 0% 4. percent error estimation accuracy precision percent error

2 Inside Earth Chapter 1 Section 1 Earth s Interior

3 Page 6 Fig. 1

4 Watch the video: On which two continents were fossil bones of Brachiosaurus found?

5 brachiosaurus301

6 I. Exploring Inside Earth A. Earth s Center is 6,000 km deep B. How we learn 1. Direct evidence a. Rock samples 2. Indirect evidence a. Seismic waves b. Speed & paths reveal structure

7 II. Journey to Earth s Center A. Three layers of earth B. Temperature increases with depth 1. Heat from Earth s formation 2. Radioactive decay C. Pressure also increases 1. More rock pressing down

8 Page 9 Fig. 4

9 Pages 10 & 11

10 III. The Crust A. Outer layer 1. Dry land a. Continental crust b. Granite 2. Ocean floor a. Oceanic crust b. Basalt

11 B. Thinnest layer km thick 2. Up to 70 km beneath mountains

12 Crust 222

13 IV. Mantle hot rock A. Lithosphere stone 1. Uppermost mantle & crust 2. Approximately 100 km thick B. Asthenosphere 1. Bendable rock C. Lower mantle 1. Still solid

14 mantle229

15 V. Core A. Outer core 1. Molten metal 2. Iron (Fe) & Nickel (Ni) 3. Movement causes magnetic field B. Inner core 1. Solid metal a. High pressure

16 - Earth s Interior The Core The core is made mostly of the metals iron and nickel. It consists of two parts a liquid outer core and a solid inner core.

17 Holes drilled several kilometers into Earth s crust provide direct evidence about Earth s interior in the form of 1. seismic waves. 2. rock samples. 3. liquid iron. 0% 0% 0% 0% 4. volcanic eruption. seismic waves. rock samples. liquid iron. volcanic eruption

18 Geologists obtain indirect evidence about Earth s interior by 1. measuring pressure differences at Earth s surface. 2. estimating temperature inside earth. 3. directly looking under the many layers. 4. recording and studying seismic waves. measuring pressure d... 0% 0% 0% 0% estimating temperatur... directly looking unde... recording and studyi

19 Core 140

20 - Earth s Interior Temperature Inside the Earth The graph shows how temperatures change between Earth s surface and the bottom of the mantle. On this graph the temperature at the Earth s surface is 0 o C. Study the graph carefully and then answer the questions.

21 - Earth s Interior Temperature Inside the Earth Reading Graphs: As you move from left to right on the x-axis, how does depth inside the Earth change? The depth increases.

22 - Earth s Interior Temperature Inside the Earth Estimating: What is the temperature at the boundary between the lithosphere and the asthenosphere? About 1,600 o C

23 - Earth s Interior Temperature Inside the Earth Estimating: What is the temperature at the boundary between the lower mantle and the core? About 3,200 o C

24 - Earth s Interior Temperature Inside the Earth Interpreting Data: How does temperature change with depth in Earth s interior? It generally increases with depth.

25 What is the correct order (starting from the surface) of Earth s layers? 1. crust, outer core, inner core, mantle 2. mantle, outer core, inner core, crust 3. crust, mantle, outer core, inner core 4. outer core, inner core, crust, mantle crust, outer core, inne... 0% 0% 0% 0% mantle, outer core, inn.. crust, mantle, outer c... outer core, inner core

26 Earth s inner core is 1. a dense ball of solid metal. 2. a layer of molten metal. 3. a layer of hot rock. 4. a layer of rock that forms Earth s outer skin. a dense ball of solid... 0% 0% 0% 0% a layer of molten metal. a layer of hot rock. a layer of rock that f