| Earth's Layers |
| #1 |
What 3 layers of the Earth starting from the thickest. |
inner core, outer core, lower mantle |
| #2 |
What is the thinnest layer? |
crust |
| #3 |
What layer does the crust sit on? |
Lithosphere |
| #4 |
Describe the core, mantle and crust. |
center thickest layer made of iron and nickel, middle layer made mostly of melted rock, thin outer layer made of rocks minerals and soil |
| #5 |
What is a subduction zone? |
area in which the continental or oceanic crust dives under another layer. |
| Moving Crust |
| #1 |
What is a plate |
A large section of earth's surface made of crust and the top part of the mantle |
| #2 |
What does the theory of plate techtonics say? |
That earth's surface is broken into plates that can move. |
| #3 |
What do scientists call the super continent that the believe all of the contintents once formed? |
Pangaea |
| #4 |
Explain how volcanoes form. |
2 plates push together, one go under the other, it melts and forms lava which gets pushed to the surface. |
| #5 |
Explain how mountains can be formed. |
2 plates push together, both push upwards causing the rock to wrinkle and form a mountain. |
| Changes of earth's surface |
| #1 |
What is weathering |
the process that breaks down and changes rocks |
| #2 |
Name at least 3 ways that weathering can occur |
air, ice, water, chemicals, living things |
| #3 |
What is erosion |
the moving of soil and weathered rock |
| #4 |
Name 2 ways that erosion can occur |
moving water, wind |
| #5 |
What is depostion |
the dropping of materials moved by erosion |
| Rocks |
| #1 |
What is the rock cycle |
ways that rocks change form one form to another. |
| #2 |
Name the 3 types of rocks |
igneous, sedimentary, metamorphic |
| #3 |
Explain how an igneous rock can change to a sedimentary rock. |
Igneous rock gets weathered, the weathered pieces are called sediments, sediments form layers, over time layers are puched together and form sedimentary rock |
| #4 |
What is a mineral composed of? |
different Elements |
| #5 |
What layer of the Earth would you find fossils? |
Sedimentary Rock |
| Star Questions |
| #1 |
Starting from the center of the earth name all 7 layers in order. |
inner core, outer core, lower mantle, upper mantle, asthenosphere, lithosphere, crust |
| #2 |
Explain how earthquakes occur |
2 plate rub against each other, pressure builds up and causes sudden movement |
| #3 |
Name 2 features that the process of deposition can create |
deltas, sand dunes, sandy beaches |
| #4 |
The San Andreas Fault was created by a __________ boundary? |
transform |
| #5 |
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