Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Earth's Layers
| Question | Answer |
|---|---|
| How many layers does Earth have? | 4 |
| What are the main layers of the Earth? | Crust, mantle, outer core, and inner core. |
| The layer that is like a thin shell around the Earth. It includes both the dry land and ocean floor. It is made of silica and magnesium. | Crust |
| The layer that is made of hot rock. It is silicon, oxygen, iron and magnesium. It is the largest layer. | Mantle |
| What was the super continent called? | Pangaea |
| Forces that build up the Earth | Constructive forces |
| Forces that wear down the Earth | Destructive forces |
| Who developed the theory of continental drift? | Alfred Wegener |
| What theory is this- All land was once one land mass but then drifted away into their current locations. | Continental drift |
| Plates that pass each other | Transform Boundries |
| Plates that go into the other | Convergent Boundries |
| Plates that go away from eachother | Divergent Boundries |
| What theory- Pieces of crust is always in motion, constantly changing the Earth. | Plate tectonics |
| This layer is made of liquid iron and nickel and surrounds another layer. It is very hot | Outer core |
| The solid stone part of the mantle and crust | Lithosphere |
| The depper, weak plastic like part of the mantle | Asthenosphere |
| The innermost layer made of nickel. Almost as hot as he sun and innermost layer | Inner core |
| Vibration waves set off from earthquakes. They tell how the earth is set up by their speed and paths. | Seismic waves |
| Crust that holds oceans, is denser, made of basalt and is thinner. | oceanic crust |
| Crust that holds continents, less dense, made of granite, and thicker | continental crust |
| What was the evidence used to support continental drift? | evidence from land, climate, and fossils |
| Why was Wegener's theory rejected | He couldn't explain how the continents moved |
| What happens when two plates carrying continents collide? | They push against each other until they buckle, forming mountains |
| What happens when two plates carrying oceans collide? | The denser one falls beneath the other, forming trenches |
| What happens when a plate carrying ocean collides with a plate carrying land? | The ocean one falls beneath the other, because it is denser |
Created by:
16mcosta
Popular Earth Science sets